Question for HPCL Engineer 2026 - Quiz / Questions / MCQ

Objective Questions

Latest HPCL Engineer Exam Question (Objective Questions), MCQ in English

Subjects : General Aptitude, Mechanical

Question Bank HPCL Engineer Mechanical Exam - English

Back to Exam

General Aptitude

Question 1Single Answer

I go to Madurai by —– Vaigai Express

A
a
B
an
C
some
D
the

Question 2Single Answer

Have the car stolen!

A
Steal the car
B
You should have the stolen car
C
Get someone to steal the car
D
They have stolen the car

Question 3Single Answer

The payment was collected by the hardworking salesman.

A
The hardworking salesman collected the payment.
B
the salesman who worked heard was able to collect the payment.
C
to collect the payment the salesman had to work hard.
D
The hardworking salesman was able to collect the payment.

Question 4Single Answer

I had to stop all my work to complete this project.

A
All other work had to be stopped to complete this project by me
B
For completing this project all other work must be stopped
C
For completing this project I had to stop all my work
D
To complete this project all other work had been stopped by me

Question 5Single Answer

They have published the names of all the successful candidates.

A
The candidates who have succeeded their names they had published.
B
The names of all the successful candidates have been published by them
C
The candidates who have succeeded their names have been published by them.
D
The names of all the successful candidate were published by them.

Question 6Single Answer

The online shopping site lowered the prices.

A
Lowering of the prices was done by the online shopping site
B
The prices were lowered by the online shopping site
C
The prices had been lowered by the online shopping site
D
The prices have been lowered by the online shopping site

Question 7Single Answer

Who taught you to drive a truck ?

A
To drive a truck by whom were you taught?
B
Driving a truck by who were you taught?
C
Driving a truck by who were you being taught?
D
By whom were you taught to drive a truck?

Question 8Single Answer

We shall invite Suresh.

A
Suresh would be invited by us
B
Suresh would have been invited by us
C
Suresh will be invited by us
D
Suresh will have been invited by us

Question 9Single Answer

Dark clouds have overcast the evening sky.

A
By the dark clouds the evening sky was overcast.
B
The evening sky has been overcast by the dark clouds.
C
Dark clouds overcastted the evening sky.
D
The sky of the evening was overcasted by dark clouds.

Question 10Single Answer

The partners will celebrate their triumph tomorrow.

A
The triumph would be celebrated by the partners a day before
B
The triumph would be celebrated by the partners a day after
C
The triumph would have been celebrated by the partners a day after
D
The triumph will have been celebrated by the partners tomorrow

Question 11Single Answer

Why did break the vase?

A
why is the vase broken by him
B
why was the vase broken by him
C
why had been the vase broken by him
D
why has been the vase broken by him

Question 12Single Answer

Mariam was writing a note to her boss.

A
A note was written to her boss by Mariam
B
A note was wrote by Mariam to her boss
C
A note was being written by Mariam to her boss
D
A note was written by Mariam to her boss

Question 13Single Answer

The baby really enjoys that music.

A
That music was really enjoyed by the baby.
B
That music was really being enjoyed by the baby.
C
That music is really enjoyed by the baby.
D
This music was really enjoyed by the baby.

Question 14Single Answer

The weather disrupted the final match.

A
The final match has been disrupted by the weather.
B
The final match had been disrupted by the weather.
C
The final match was disrupted by the weather.
D
The final match was being disrupted by the weather.

Question 15Single Answer

The management committee is required to publish a report every year.

A
report would be published by the management committee every year.
B
A report would have been published by the management committee every year.
C
A report requires to be published by the management committee every year.
D
Every year the report would be published by the management committee.

Question 16Single Answer

Preeti ran the race in record time.

A
In record time Preeti ran the race.
B
The race was run by Preeti in record time
C
The race was being run by Preeti in record time
D
The race had been run by Preeti in record time

Question 17Single Answer

I shall have written the full thesis by December

A
By December I shall have wrote the full thesis.
B
The full thesis will have been written by me by December.
C
The full Thesis will be wrote by me by December
D
By December the full thesis must have been wrote by me.

Question 18Single Answer

One must keep one’s promises.

A
One’s promises must be kept by one.
B
One’s promises had to be kept.
C
Promises must be kept.
D
Promises have to be kept by one.

Question 19Single Answer

I read the story in one night.

A
The story had been read by me in one night.
B
The story has been read by me in one night
C
n one night the story has been read by me.
D
the story was read by me in one night

Question 20Single Answer

We must take care of the old.

A
Those who are old need to be taken care of by us.
B
The old must be taken care of by us.
C
Those who are old need care by us
D
The old should be taken care of by us.

Question 21Single Answer

My father generously donated money to the church.

A
Money is generously being donated to te church by my father.
B
Money has been generously donated to the church by my father.
C
Money had been generously donated to the church by my father.
D
Money was generously donated to the church by my father.

Question 22Single Answer

We will send you your laboratory reports as soon as they are ready

A
you would be sent your laboratory reports as soon as they will be ready.
B
Your laboratory reports will be sent to you as soon as they are ready.
C
You would be send your laboratory reports as soon as they will be ready.
D
Your laboratory reports should be sent to you as soon as they will be ready.

Question 23Single Answer

I saw the master conducting the orchestra.

A
I saw that the orchestra was being conducted by the master.
B
I saw the orchestra being conducted by te master
C
The master was seen conducting the orchestra by me.
D
The master was conducting the orchestra and I saw that.

Question 24Single Answer

The dog is being fed by us.

A
We fed the dog.
B
We have had been feeding the dog.
C
We are feeding the dog
D
We had been feeding the dog

Question 25Single Answer

When did Rohit return my bike?

A
When was my bike returned by Rohit?
B
When was it that Rohit returned my bike?
C
Rohit returned my bike when?
D
When did my bike come back from Rohit?

Question 26Single Answer

Passage :

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .

Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?

Question 27Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?

A
SUM
B
BIG
C
Both BIG and THE
D
FOR
E
Both FOR and BIG

Question 28Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be second from the right ?

A
AND
B
FOR
C
THE
D
BIG
E
SUM

Question 29Single Answer

Passage :

Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed ?

A
None
B
One
C
Two
D
Three
E
Four

Question 30Single Answer

Passage :

How many letters are there in the English alphabetical series between the second letter of the word which is second from the right and the second letter of the word which is second from the left of the given words?

A
Two
B
Five
C
Six
D
Nine
E
Three

Question 31Single Answer

Passage :

Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If in each of the given words, each of the consonant is changed to previous letter and each vowel is changed to next letter in the English alphabetical series, in how many words thus formed will no vowels appear?

A
None
B
One
C
Two
D
Three
E
More than three

Question 32Single Answer

Passage :

Direction : Following question is based on five words given below:
BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)

If the third alphabet in each of the words is changed to the next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed?

A
None
B
One
C
Two
D
Three
E
Four

Question 33Single Answer

Passage :

If the position of the first and the second alphabets of each of the words are interchanged, which of the following will form a meaningful English word?

A
Both CAT and OWN
B
Both BRU and INK
C
Only CAT
D
Only INK
E
Only LEG

Question 34Single Answer

Passage :

Direction: Following question is based on five words given below:
BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be exactly in the middle of the five words?

A
OWN
B
LEG
C
BRU
D
CAT
E
INK

Question 35Single Answer

Passage :

Direction: Following question is based on five words given below:
BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)

If in each of the given words, each of the consonants is changed to previous letter and each vowel is changed to next letter in the English alphabetical series, in how many words thus formed will the same alphabet appear twice?

A
None
B
One
C
Two
D
Three
E
More than three

Question 36Single Answer

Passage :

Find the missing number in the following series ?

3, 5, 5, 19, 7, 41, 9, ?

A
71
B
61
C
79
D
69

Question 37Single Answer

Passage :

Direction: following question is based on five words given below:
LAP BUT CAR SON HID
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words.)

If the positions of the first and the third alphabets of each of the words are interchanged, which of the following would form meaningful words with the new arrangement?

A
HID
B
SON
C
Both LAP and BUT
D
CAR
E
Both CAR and LAP

Question 38Single Answer

Passage :

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be fourth from the left?

A
LAP
B
BUT
C
CAR
D
SON
E
HID

Question 39Single Answer

Passage :

Direction : following question is based on five words given below:
LAP BUT CAR SON HID
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words.)

If in each of given words, each of the consonants is changed to previous letter and each vowel is changed to next letter in the English alphabetical series, in how many words thus formed will at least one vowel appear?

A
None
B
One
C
Two
D
Three
E
More than three

Question 40Single Answer

Passage :

Direction : following question is based on five words given below:
LAP BUT CAR SON HID
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words.)

How many letters are there in the English alphabetical series between the third letter of the word which is third from the right and the first letter of the word which is first from the left of the given word?

A
Two
B
Five
C
Six
D
Nine
E
Three

Question 41Single Answer

Passage :

If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having no vowels will be formed?

A
None
B
One
C
Two
D
Three
E
More than three

Question 42Single Answer

Passage :

Direction: following letter is based on the five three letter words given below:
PIN ROD DEN SAT FUN
(Note: The words formed after performing the given operations may or may not be meaningful English words.)

If all the letters in each of the words are arranged alphabetically (within the word), how many words will remain unchanged?

A
One
B
Two
C
Three
D
More than three
E
None

Question 43Single Answer

Passage :

Direction: following letter is based on the five three letter words given below:
PIN ROD DEN SAT FUN
(Note: The words formed after performing the given operations may or may not be meaningful English words.)

According to the English alphabetical series how many letters are there between the first letter of the third word and the first letter of the fifth word?

A
Two
B
One
C
None
D
Three
E
More than three

Question 44Single Answer

Passage :

Direction: following letter is based on the five three letter words given below:
PIN ROD DEN SAT FUN
(Note: The words formed after performing the given operations may or may not be meaningful English words.)

If the first letter of all the words is changed to the previous letter of the English alphabetical series, how many words will have more than one vowel?

A
One
B
Two
C
Three
D
More than three
E
None

Question 45Single Answer

Passage :

Direction: following letter is based on the five three letter words given below:
PIN ROD DEN SAT FUN
(Note: The words formed after performing the given operations may or may not be meaningful English words.)

If all the vowels (in all the words) are changed to the next letter of the English alphabetical series, how many words will form meaningful English words?

A
One
B
Two
C
Three
D
More than three
E
None

Question 46Single Answer

Passage :

Direction : following letter are based on the five three letter words given below:
PIN ROD DEN SAT FUN
(Note: The words formed after performing the given operations may or may not be meaningful English words.)

If the positions of the first and last letters of all of the words are interchanged and then the words thus formed are arranged alphabetically form left to right, which of the following will be second from the left?

A
SAT
B
DEN
C
ROD
D
PIN
E
FUN

Question 47Single Answer

Passage :

Direction: Following question is based on the five three lettered words given below:
SHE AND TWO WIT GUM
(Note: The words formed after performing the given operations may or may not be meaningful English words)

If all the letters in each of the words are arranged in alphabetical order (within the word) how many words will remain unchanged?

A
One
B
Two
C
Three
D
More than three
E
None

Question 48Single Answer

Passage :

Direction: The following question is based on five words given below:
RAT ONE BUT AND SAW
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words.)

If in each of the given words each alphabet is changed to the next letter in the English alphabetical series, in how many words thus formed have the consonants changed to vowels?

A
One
B
Two
C
Three
D
Four
E
Five

Question 49Single Answer

Passage :

Direction : The following question is based on five words given below:
RAT ONE BUT AND SAW
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words.)

How many such pairs of the letters are there in the word highlighted in bold, each of which has as many letters between them in the word (in both forward and backward directions), as they have between them in the English alphabetical order?

A
None
B
One
C
Two
D
Three
E
Four

Question 50Single Answer

Passage :

If the first alphabet of each of the words is changed to the next alphabet in English alphabetical series, how many meaningful English words will be formed?

A
One
B
Two
C
Three
D
Four
E
Five

Important Questions Package

HPCL Engineer Exam Online Question Bank Package

Buy HPCL Engineer Important Questions, MCQ, question answer in Hindi & English. It will help you to score high marks in HPCL Engineer question bank 2026 in Online, PDF & Print study material.

+ Free Monthly Current Affairs, GK & more PDF Download

Sr.	Package Name	Amount
1.	HPCL Engineer Mechanical Exam - Hindi Description : 1000 Question with Answer.	₹101 ~~[₹500]~~
2.	HPCL Engineer Mechanical Exam - Hindi Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
3.	HPCL Engineer Mechanical Exam - Hindi Description : 3000 Question with Answer.	₹181 ~~[₹500]~~
4.	HPCL Engineer Mechanical Exam - English Description : 1000 Question with Answer.	₹101 ~~[₹500]~~
5.	HPCL Engineer Mechanical Exam - English Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
6.	HPCL Engineer Mechanical Exam - English Description : 3000 Question with Answer.	₹181 ~~[₹500]~~
7.	HPCL Engineer Civil Exam - Hindi Description : 1000 Question with Answer.	₹101 ~~[₹500]~~
8.	HPCL Engineer Civil Exam - Hindi Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
9.	HPCL Engineer Civil Exam - Hindi Description : 3000 Question with Answer.	₹181 ~~[₹500]~~
10.	HPCL Engineer Civil Exam - English Description : 1000 Question with Answer.	₹101 ~~[₹500]~~
11.	HPCL Engineer Civil Exam - English Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
12.	HPCL Engineer Civil Exam - English Description : 3000 Question with Answer.	₹181 ~~[₹500]~~
13.	HPCL Engineer Electrical Exam - Hindi Description : 1000 Question with Answer.	₹101 ~~[₹500]~~
14.	HPCL Engineer Electrical Exam - Hindi Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
15.	HPCL Engineer Electrical Exam - Hindi Description : 3000 Question with Answer.	₹181 ~~[₹500]~~
16.	HPCL Engineer Electrical Exam - English Description : 1000 Question with Answer.	₹101 ~~[₹500]~~
17.	HPCL Engineer Electrical Exam - English Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
18.	HPCL Engineer Electrical Exam - English Description : 3000 Question with Answer.	₹181 ~~[₹500]~~
19.	HPCL Engineer Chemical Exam - Hindi Description : 1000 Question with Answer.	₹101 ~~[₹500]~~
20.	HPCL Engineer Chemical Exam - Hindi Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
21.	HPCL Engineer Chemical Exam - English Description : 1000 Question with Answer.	₹101 ~~[₹500]~~
22.	HPCL Engineer Chemical Exam - English Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
23.	HPCL Engineer (Chemical) Exam - English (Old) Description : 2000 Question with Answer.	₹151 ~~[₹500]~~
24.	HPCL Engineer Mechanical Exam - Hindi Description : 1000 Question & Answer Download in PDF (Send by Email)	₹151 ~~[₹450]~~
25.	HPCL Engineer Electrical Exam - Hindi Description : 1000 Question & Answer Download in PDF (Send by Email)	₹151 ~~[₹450]~~
26.	HPCL Engineer Civil Exam - Hindi Description : 1000 Question & Answer Download in PDF (Send by Email)	₹151 ~~[₹450]~~
27.	HPCL Engineer Chemical Exam - Hindi Description : 1000 Question & Answer Download in PDF (Send by Email)	₹151 ~~[₹450]~~
28.	HPCL Engineer Mechanical Exam - English Description : 1000 Question & Answer Download in PDF (Send by Email)	₹151 ~~[₹450]~~
29.	HPCL Engineer Electrical Exam - English Description : 1000 Question & Answer Download in PDF (Send by Email)	₹151 ~~[₹450]~~
30.	HPCL Engineer Civil Exam - English Description : 1000 Question & Answer Download in PDF (Send by Email)	₹151 ~~[₹450]~~
31.	HPCL Engineer Chemical Exam - English Description : 1000 Question & Answer Download in PDF (Send by Email)	₹151 ~~[₹450]~~
32.	HPCL Engineer Mechanical Exam Question Bank Book - Hindi Description : 1000 Question with Answer (Printed Material)	₹450 ~~[₹800]~~
33.	HPCL Engineer Electrical Exam Question Bank Book - Hindi Description : 1000 Question with Answer (Printed Material)	₹450 ~~[₹800]~~
34.	HPCL Engineer Civil Exam Question Bank Book - Hindi Description : 1000 Question with Answer (Printed Material)	₹450 ~~[₹800]~~
35.	HPCL Engineer Chemical Exam Question Bank Book - Hindi Description : 1000 Question with Answer (Printed Material)	₹450 ~~[₹800]~~
36.	HPCL Engineer Mechanical Exam Question Bank Book - English Description : 1000 Question with Answer (Printed Material)	₹390 ~~[₹600]~~
37.	HPCL Engineer Electrical Exam Question Bank Book - English Description : 1000 Question with Answer (Printed Material)	₹390 ~~[₹600]~~
38.	HPCL Engineer Civil Exam Question Bank Book - English Description : 1000 Question with Answer (Printed Material)	₹390 ~~[₹600]~~
39.	HPCL Engineer Chemical Exam Question Bank Book - English Description : 1000 Question with Answer (Printed Material)	₹390 ~~[₹600]~~

General Aptitude

Question 51Single Answer

Passage :

If the given words are arranged in the order as they would appear in the dictionary from left to right, which of the following would be fourth from the left?

A
RAT
B
ONE
C
BUT
D
AND
E
SAW

Question 52Single Answer

Passage :

Direction : The following question is based on five words given below:
RAT ONE BUT AND SAW
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words.)

If in each of the given words, only the consonants are changed to the next letter in the English alphabetical series and the vowels are retained, in how many words thus formed will the vowels appear twice or more times? (same or different vowels)

A
None
B
One
C
Two
D
Three
E
Four

Question 53Single Answer

Passage :

Direction : Following question is based on five words given below:
WIT BAR URN ELF TOP
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words.)

If in each of the words, all the alphabets are arranged in English alphabetical order within the word, how many words will NOT begin with a vowel?

A
None
B
One
C
Two
D
Three
E
More than three

Question 54Single Answer

Passage :

How many letters are there in the English alphabetical series between second letter of the word which is second from the right and the third letter of the word which is third from the left of given words?

A
One
B
Two
C
Three
D
Four
E
Five

Question 55Single Answer

Passage :

A
None
B
One
C
Two
D
Three
E
More than three

Question 56Single Answer

The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?

A
51:52
B
52:53
C
51:53
D
52:55

Question 57Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 58Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 59Single Answer

Arrange in descending order: 5/8, 7/10, 3/4

A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4

Question 60Single Answer

What is (3^{^}{4} times 9^{^}{2}) ?

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 61Single Answer

If 3⁴X^-2 = 729, then find the value of X.

Question 62Single Answer

Convert 0.6 into fraction ?

A
3/5
B
2/3
C
4/5

Question 63Single Answer

The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?

A
169
B
36
C
196
D
Can not say

Question 64Single Answer

If a and b are positive integers, such that ab = 125, then (a-b)^a+b-4= ?

A
16
B
25
C
28
D
30

Question 65Single Answer

If x^*y = x² + y² – xy, then value of 9^*11 is

A
93
B
103
C
60.5
D
121

Question 66Single Answer

Which is greater ?

A
15/16
B
17/18
C
Equal
D
Cannot compare

Question 67Single Answer

If sum of two numbers is 42 and their product is 437, then find their difference.

Question 68Single Answer

Write the 44000 in Roman numerals

A
XLI
B
XLVI
C
XLIV
D
XLVIC

Question 69Single Answer

Convert 0.0909… into fraction ?

A
1/11
B
9/11
C
1/9
D
9/10

Question 70Single Answer

What is (98 times 102) ?

A
9996
B
10000
C
10096
D
10196

Question 71Single Answer

Which is smaller ?

A
9/11
B
7/9
C
Equal
D
Cannot compare

Question 72Single Answer

Convert 0.5777… into fraction ?

A
26/45
B
52/90
C
13/22
D
5/9

Question 73Single Answer

Convert 0.81 into fraction ?

A
81/100
B
9/10
C
8/9
D
9/11

Question 74Single Answer

(63)² – (12)² =?

A
3528
B
3852
C
3582
D
3825

Question 75Single Answer

Which is greater ?

A
13/17
B
11/14
C
Equal
D
Cannot compare

Question 76Single Answer

16.928 + 24.7582

5.015 =?

A
20
B
24
C
22
D
26

Question 77Single Answer

Convert 0.75 into fraction ?

A
3/4
B
2/3
C
4/5
D
5/8

Question 78Single Answer

Which is greater ?

A
11/13
B
12/15
C
Equal
D
Cannot compare

Question 79Single Answer

Two numbers are co-prime if their HCF is ?

A
0
B
1
C
Same
D
Prime

Question 80Single Answer

Product of all factors of 10 is ?

A
10
B
100
C
1000
D
10000

Question 81Single Answer

How many real numbers exist between 2 and 3 ?

A
1
B
10
C
Infinite
D
None

Question 82Single Answer

Which number is divisible by 11 ?

A
12345
B
1331
C
1234
D
1213

Question 83Single Answer

What is the unit digit of (7^{245}) ?

Question 84Single Answer

What is (64^{^}{2/3}) ?

A
4
B
8
C
16
D
32

Question 85Single Answer

What is (125^{^}{1/3}) ?

Mechanical

Question 86Single Answer

If a submerged body displaced from its equilibrium position, returns to its original position, it is called __________.

A
thermal equilibrium
B
neutral equilibrium
C
unstable equilibrium
D
stable equilibrium

Question 87Single Answer

In a flow measurement, a venturi meter is preferred over an orifice plate because _____.

A
energy of head loss is less
B
It is cheaper
C
pressure drop is more
D
space is limited

Question 88Single Answer

Pitot tube measures ______.

A
dynamic pressure of a moving stream
B
guage pressure
C
temperature of moving water
D
pressure difference between two fluids

Question 89Single Answer

Which of the following is not a property of an ideal fluid ?

A
flow is irrotational
B
it has no viscosity
C
it has viscosity
D
it is incompressible

Question 90Single Answer

Nozzle used in steam turbines convert ________.

A
enthalpy of steam into work
B
enthalpy of steam into kinetic energy
C
enthalpy of steam into pressure energy
D
pressure energy into work

Question 91Single Answer

Which of the following assumptions is the most relevant in air-standard cycle analysis ?

A
All the processes within the cycle are irreversible
B
Working fluid is a fixed mass
C
Specific heat of air changes during the cycle
D
Cycle is assumed to be an open cycle

Question 92Single Answer

The modern Francis turbine is a ___________flow turbine .

A
tangential
B
axial
C
radial
D
mixed

Question 93Single Answer

Variation of stress with strain rate for a Newtonian fluid is ______ .

A
hyperbolic
B
linear
C
elliptical
D
parabolic

Question 94Single Answer

Which of the following is NOT a part of refrigeration systems ?

A
Turbine
B
Evaporator
C
Compressor
D
Condenser

Question 95Single Answer

Which of the following is NOT an intensive property ?

A
Temperature
B
Total volume
C
Pressure
D
Density

Question 96Single Answer

Which of the following does NOT represent a unit of viscosity ?

A
Stoke
B
Poise
C
m²/sec
D
N-m/sec

Question 97Single Answer

__________ in the fuel is oxidised during knocking .

A
Hydrocarbon
B
Phosphorous
C
Water
D
Coal

Question 98Single Answer

_________ is defined as the ability of a material to resist deformation under action of an external load .

A
Stiffness
B
Resilience
C
Brittleness
D
Toughness

Question 99Single Answer

Draught is produced in locomotive boilers by which of the following components ?

A
Locomotive
B
Steam jet
C
Centrifugal fan
D
Chimney

Question 100Single Answer

For a steady flow, the value of all fluid properties at any fixed point _________ .

A
do not change with location
B
change with time
C
change with location
D
do not change with time

Question 101Single Answer

For a floating body, if the metacentre is below the centre of gravity, then the body is said to be __________ equilibrium .

A
thermal
B
stable
C
unstable
D
neutral

Question 102Single Answer

________ is useful for measuring flow of a conducting fluid .

A
Orifice meter
B
Rotameter
C
Vane meter
D
Electro-magnetic flow meter

Question 103Single Answer

A two- stroke engine consists of ________ port (s)

A
Three
B
Four
C
One
D
Two

Question 104Single Answer

Air Cooling is mostly preferred for _________ .

A
heavy truck
B
buses
C
moto cycles
D
multi-utility vehicles

Question 105Single Answer

_______ valves are provided in reciprocating compressors .

A
Simply supported
B
Solenoid
C
Plate
D
Poppet

Question 106Single Answer

Benson boiler have ______ water drum (s)

A
One
B
Zero
C
Three
D
Two

Question 107Single Answer

_________ is used for pumping water into a boilers .

A
Economiser
B
Duplex pump
C
Feed pump
D
Rotor

Question 108Single Answer

The function of a carburetor in internal combustion engines is :

A
to control fuel alone
B
to cool exhaust gases
C
to maintain air-fuel ratio
D
to control air alone

Question 109Single Answer

The device which transfers energy from the ______ to _____ the is known as hydraulic turbine .

A
atmosphere; fluid
B
rotor; fluid
C
fluid; rotor
D
fluid; atmosphere

Question 110Single Answer

The flash chamber in the single stage VCR cycle serves to ________ .

A
decrease the compression ratio
B
increase the refrigerating effect
C
increase the compression ratio
D
decrease the refrigerating effect

Question 111Single Answer

Define thermodynamics .

A
It is a science which deals with the relation between heat, work and properties of systems
B
It is a science which deals with work done
C
It deals with dynamics under thermal conditions
D
It is science which deals with the relation between work and properties

Question 112Single Answer

Which of the following statements is correct about a Benson boiler ?

A
Air is sent through the same direction
B
There is no recirculation of water
C
Steam is sent out in multiple directions
D
Flue gases pass only in one direction

Question 113Single Answer

Within a refrigeration system, the expansion valve is incorporated between the ________ .

A
Super-heater and sub-cooler
B
compressor and condenser
C
evaporator and compressor
D
condenser and evaporator

Question 114Single Answer

The reversed ______ cycle employed for passenger aircraft systems .

A
Carnot
B
Atkinson
C
Ericsson
D
Brayton

Question 115Single Answer

Fusible plug in a steam boiler is placed ______ .

A
below the water level indicator
B
at he crown of the furnace
C
at the fire grate of the boiler
D
near the manhole

Question 116Single Answer

Aqua ammonia solution used in a vapour absorption refrigeration system is a solution of ammonia in ________ .

A
CF₃
B
LiBr
C
H₂O₂
D
H₂O

Question 117Single Answer

Coated electrodes are used in ______ .

A
gas tungsten arc welding
B
submerged arc welding
C
tungsten insert gas welding
D
shielded metal arc welding

Question 118Single Answer

Where is air cycle refrigeration commonly used ?

A
Domestic refrigerator
B
Cold storage
C
Aircraft conditioning
D
Car air conditioning

Question 119Single Answer

________, is not a water tube boiler .

A
Benson boiler
B
Babcock-Wilcox boiler
C
Stirling boiler
D
Scotch marine

Question 120Single Answer

Stoke is another unit of -

A
kinematic viscosityy
B
velocity gradient
C
Shear stress
D
dynamic viscosit

Question 121Single Answer

For a refrigerating machine, capacity is expressed as ______ .

A
the lowest temperature attained
B
inside volume of the cabinet
C
gross weight of the machine
D
rate of heat extraction from the space being cooled

Question 122Single Answer

The value of quality or dryness fraction of a substance in saturated liquid-vapor mixture is ________ .

A
1
B
2
C
Zero
D
between Zero and 1

Question 123Single Answer

Uniform flow is the type of flow where in velocity at any given time ________- with respect to space .

A
Decreases
B
Does not change
C
Increases
D
Changes

Question 124Single Answer

______ falls under the category of a water tube boiler .

A
Locomotive boiler
B
Lancashire boiler
C
Cornish boiler
D
LaMont boiler

Question 125Single Answer

Chaplets are used in ________ .

A
forging
B
casting
C
welding
D
extrusion

Question 126Single Answer

Which of the following is NOT a unit of pressure ?

A
Pa
B
Bar
C
N/m²
D
Joule

Question 127Single Answer

What was the first refrigerant used in continuous refrigeration system ?

A
Ammonia
B
Water
C
Air
D
Carbon dioxide

Question 128Single Answer

For a 2 m deep swimming pool, pressure difference between the top and the bottom of the pool is ________ kPa .

A
22
B
19.6
C
11
D
12

Question 129Single Answer

Pressure measurement is done by ____. by measuring heat loss from a heated wire .

A
A pirani gauge
B
a manometer
C
a barometer
D
an orifice meter

Question 130Single Answer

In the Rankine cycle, the fluid which enters the boiler is :

A
water
B
steam
C
mercury
D
oxygen

Question 131Single Answer

Percentage elongating measured during tensile testing indicates _____ .

A
malleability
B
fatigue strength
C
creep
D
ductility

Question 132Single Answer

For a given centrifugal pump, discharge varies _______ with speed .

A
fifth power of
B
linearly
C
inversely
D
square root of

Question 133Single Answer

Foaming is a phenomenon that occurs in the boiler feed water due to _____ .

A
nitrogen peroxide
B
manganese
C
sodium chloride
D
oil

Question 134Single Answer

Compounding of a steam turbine is done to ______ .

A
balance the rotor
B
reduce the rotor speed
C
reduce the blade friction
D
connect the shaft

Question 135Single Answer

Any change in entropy could be achieved by changing______ .

A
velocity
B
heat
C
acceleration
D
mass

Question 136Single Answer

Smoke emitting from a lighted cigarette represents ________ .

A
point
B
pathline
C
streakline
D
streamline

Question 137Single Answer

The splash system is NOT used to lubricate _______ .

A
tappets
B
camshafts
C
gear teeth and roller bearings
D
piston rings

Question 138Single Answer

A dead weight tester is used widely for ______ .

A
producing high pressures
B
accurate measurement of loads
C
calibration of another equipment
D
testing magnitude of the given weight

Question 139Single Answer

_______ CANNOT be classified as inversion (s) of a single-slider crank mechanism .

A
Elliptical trammel
B
Whitworth quick-return mechanism
C
Oscillating cylinder engine
D
Crank and slotted-lever mechanism

Question 140Single Answer

Which of the following is NOT a part of Rankine cycle ?

A
Pump
B
Compressor
C
Boiler
D
Turbine

Question 141Single Answer

A power plant that uses a gas turbine followed by a steam turbine for necessary power generation is known as __________ cycle power plant .

A
combined
B
bottom
C
generation
D
topping

Question 142Single Answer

In the context of properties of steel, which of the following statement is highly relevant ?

A
Presence of carbon contents imparts strength to iron
B
Presence of carbon does not influence the heat-treatment process
C
Presence of manganese decreases strength.
D
Presence of sulphide improves corrosion resistance

Question 143Single Answer

Those pumps employed for mud related work have ______ type of impeller .

A
an open
B
a two-side shrouded
C
a double-suction
D
a one-side shrouded

Question 144Single Answer

If the oil viscosity increased, then the wear loss _________ .

A
increases
B
becomes zero
C
decreases
D
remains the same

Question 145Single Answer

Impact load is an example of :

A
uniform load
B
static load
C
dynamic load
D
fatigue load

Question 146Single Answer

Internal energy associated with kinetic energy of molecules is ______ .

A
latent energy
B
nuclear energy
C
sensible energy
D
chemical energy

Question 147Single Answer

A capillary tube is employed in a refrigeration cycle to _______ .

A
produce a cooling effect
B
control temperature of the refrigerated space
C
reduce pressure of the refrigerant
D
control flow of the refrigerant

Question 148Single Answer

The Babcock-Wilcox boiler is classified as a water tube boiler because :

A
it has a large reservoir of water at the bottom
B
water passes around the tubes having hot gases
C
water heater is mounted on the boiler itself
D
water passes through the tube and hot gases around

Question 149Single Answer

Otto cycle of a car engine consists of :

A
two isochore and two reversible adiabatic cycles
B
four adiabatic cycles
C
one isochore cycle only
D
one adiabatic cycle only

Question 150Single Answer

When hot air exhausting from the turbine is used to heat up the compressor exit flow, it is knows as _______ .

A
regeneration
B
re-evaporating
C
intercooling
D
intracooling

Question 151Single Answer

If the specific gravity of oil is 0.7, then its density in kg/m³ will be _______ .

A
700
B
7
C
70
D
7000

Question 152Single Answer

viscous forces are NOT available in _______ .

A
laminar flow
B
irrational flow
C
rotational flow
D
transitional flow

Question 153Single Answer

Which of the following is the most widely used fuel in boilers ?

A
Pulverised coal
B
Wood
C
Oil
D
Anthracite coal

Question 154Single Answer

If the relationship between shear stress of a fluid is NOT linear to the velocity gradient, then the fluid is :

A
a compressible fluid
B
a Newtonian fluid
C
a non-Newtonian fluid
D
an ideal fluid

Question 155Single Answer

In a Pelton wheel, jet ratio values are ________ .

A
More than 6
B
between 2 and 5
C
less than 1
D
less than or equal to 2

Question 156Single Answer

What is kinematic viscosity ?

A
It is the rate of change of shear stress
B
It is the ratio of dynamic viscosity to relative density
C
It is the ratio of dynamic viscosity to mass density
D
It is the rate of change of shear strain

Question 157Single Answer

The efficiency of an ideal diesel engine does NO directly depend on ______ .

A
the cut-off ratio
B
the compression ratio
C
the fluid pressure
D
the isentropic index

Question 158Single Answer

Which of the following equipment gives direct reading of fluid flow rates ?

A
Nutating disk flow meter
B
Hot wire anemometer
C
Rotameter
D
Orifice meter

Question 159Single Answer

The tendency of material to fracture without appreciable deformation is called ______ .

A
stiffness
B
plasticity
C
toughness
D
brittlensess

Question 160Single Answer

Lancashire boiler has ______ flue tube(s), whereas Cornish boiler has _____ flue tube (s) .

A
3 ; 2
B
2; 2
C
2; 1
D
1; 2

Question 161Single Answer

The maximum temperature in case of internal combustion engines is obtained at ______ .

A
end of the compression process
B
end of the expansion process
C
start of the compression process
D
start of the expansion process

Question 162Single Answer

The moisture content o steam at the turbine exit of a steam power plant operating on the Rankine cycle can be decreased by :

A
increasing boiler pressure
B
super cooling steam
C
decreasing boiler pressure
D
reheating steam

Question 163Single Answer

Which of the following is NOT a non-ferrous alloy ?

A
Stainless steel
B
Magnesium
C
Titanium
D
Aluminium

Question 164Single Answer

The flow is volute casing outside the rotating impeller of a centrifugal pump is :

A
forced vortex flow
B
radial flow
C
free vortex flow
D
axial flow

Question 165Single Answer

The compression ratio in ideal air standard cycles is the ratio of :

A
minimum pressure to maximum pressure
B
minimum volume to maximum volume
C
maximum pressure to minimum pressure
D
maximum volume to minimum volume

Question 166Single Answer

Two stroke engine consist of a combined process of _____ in a single stroke .

A
compression and expansion
B
suction and compression
C
suction and expansion
D
suction and exhaust

Question 167Single Answer

The density of fluid does NOT affect the working of ______ .

A
an electro-magnetic flow meter
B
a nozzle meter
C
a rotameter
D
an orifice meter

Question 168Single Answer

Which of the following processes is NOT part of an ideal Otto cycle ?

A
Isentropic expansion
B
Heat addition at constant volume
C
Isentropic compression
D
Heat addition at constant pressure

Question 169Single Answer

In which of the following types of compressors are the motor and compressor enclosed in the same housing ?

A
Open-type compressor
B
Hermetic compressor
C
Reciprocating compressor
D
Axial flow type compressor

Question 170Single Answer

An oil of specific gravity 0.7 is stored in a closed tank up to a height of 2m. What will be the gauge pressure at the bottom of the tank ?

A
0.14 MPa
B
1.4 MPa
C
0.014 MPa
D
14 MPa

Back to Exam

Latest HPCL Engineer Exam Question (Objective Questions), MCQ in English

General Aptitude

HPCL Engineer Exam Online Question Bank Package

General Aptitude

Mechanical

Quick View