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Objective Questions

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

Subjects : General Aptitude, Electrical

Question Bank HPCL Maintenance Technician (Electrical) Exam - English

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General Aptitude

Question 1Single Answer

Yojna a weekly journal

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 2Single Answer

Kurukshetra a journal on rural development is published by

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 3Single Answer

Devaluation of a currency means

A
Fixing the value of the currency in conjuction with the movement in the value of a basket of predetermined currencies
B
Reduction in the value of a currency vis-à-vis major internationally traded currencies
C
Fixing the value of currency in multilateral consultaion with the IMF the World Bank and major trading partners
D
Permitting the currency to seek its worth in the international market

Question 4Single Answer

In India rural incomes are generally lower than the urban incomes, which of the following reasons account for this
1. a large number of farmers are illiterate and know little about scientific agriculture
2. prices of primary products are lower than those of manufactured products
3. Investments in agriculture has been low when compared to investment in industry

A
1 and 3
B
2 and 3
C
1 and 2
D
1,2 and 3

Question 5Single Answer

Which of the following programmes aims at the promotion of savings among rural women

A
Rashtriya Mahila Kosh
B
Indira Mahila Yojna
C
Jawahar Rozgar Yojna
D
Mahila Samridhi Yojna

Question 6Single Answer

Passage :

Direction: Study the given information carefully and answer the given question
P, Q, R, S, T, V, X and Y are seated in a straight line facing North. P sits fourth to the left of V. V sits either sixth from the left end of the line or fourth from the right end of the line. S sits second to the right of R. R is not an immediate neighbor of V. T and Q are immediate neighbours of each other but neither T not Q sits at extreme ends of the line. Only one person sits between T and X. X does not sit at the extreme end of the line

According to the passage, what is the main purpose of data protection laws ?

A
To ensure that foreign countries invest in research for drugs to treat diseases like TB
B
To attract Indian scientists back to the country
C
To prevent misuse of research to make profit by competing companies
D
To make clinical trials more acceptable to the public
E
None of these

Question 7Single Answer

‘Gram’ is relatd to ‘Mass’ in the same way as ‘Centimetre’ is related to

A
Area
B
Volume
C
Length
D
Sound
E
Energy

Question 8Single Answer

'Mustard' is related to 'Seed' in the same way as 'Carrot' is related to

A
Fruit
B
Stem
C
Flower
D
Root
E
None of these

Question 9Single Answer

Which of the following pairs of words have the same relationship as Fan : Heat?

A
Water : Drink
B
Light : Night
C
Teach : Student
D
Air : Breathe
E
Food : Hunger

Question 10Single Answer

'Radish' is related to 'Root', in the same way as 'Brinjal' is related to

A
Fruit
B
Stem
C
Flower
D
Root
E
None of these

Question 11Single Answer

'Jackal' is related to 'Carnivorous', in the same way as 'Goat' is related to

A
Omnivorous
B
Carnivorous
C
Herbivorous
D
Multivorous
E
None of these

Question 12Single Answer

Which of the following pairs has similar relationship as Run : Race?

A
Party : Dance
B
Study : Book
C
Lecture : Study
D
Enjoy : Journey
E
None of these

Question 13Single Answer

Which of the following has same relationship as that of Money : Wealth?

A
Pity : Kindness
B
Cruel : Anger
C
Wise : Education
D
Pride : Humility
E
None of these

Question 14Single Answer

Which of the following is related to ‘Melody’, in the same way as ‘Delicious’ is related to 'Taste'?

A
Memory
B
Highness
C
Tongue
D
Speak
E
Voice

Question 15Single Answer

Offhand’ is related to ‘Premeditation’ in the same way as ‘Above board’ is related to

A
Integrity
B
Honesty
C
Guide
D
Competition
E
None of these

Question 16Single Answer

What are the steps necessary for sustainable management of renewable resources?

A
Avoiding over-exploitation and pollution of biotic systems.
B
Strengthening the resource base and augmentingregenerability of biotic systems .
C
Use of alternative resources .
D
All of these

Question 17Single Answer

Fluxes of heat ,water vapour and momentum are constant in

A
upper atmosphere
B
middle atmosphere
C
Ekman layer
D
surface boundary layer

Question 18Single Answer

Inversions occur when atmosphere is

A
unstable
B
neutral
C
Slightly stable
D
most stable

Question 19Single Answer

When one species limits access of another species to a resource regardless of whether the resource is abundant or scarce ,it is called

A
interspecific competition
B
interspecific competition
C
intraspecific competition
D
exploitative competition

Question 20Single Answer

Nanda Devi Sunderbans are examples of Indian

A
National parks
B
Sanctuaries
C
International heritage areas
D
Biosphere reserves

Question 21Single 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 22Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 23Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 24Single 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 25Single Answer

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

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 26Single Answer

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

Question 27Single Answer

Convert 0.6 into fraction ?

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

Question 28Single 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 29Single 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 30Single Answer

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

A
93
B
103
C
60.5
D
121

Question 31Single Answer

Read sentence to find out whether there is any grammatical error in it. The sentences are In three separate parts and each one is labelled (a), (b), (c) and (d). In that case, letter (d) will signify a ‘No error’ response.

A
He was in the temper
B
and refused
C
discuss the matter again
D
No error

Question 32Single Answer

A
A flower makes no garland
B
so we must do a thing together
C
in a unit for a good result
D
No error

Question 33Single Answer

A
My friend is a software engineer
B
and his wife is doctor
C
so they don’t have enough time for each other
D
No error

Question 34Single Answer

A
I don’t have much time that
B
I hear you in detail with verbosity
C
tell everything in nutshell
D
No error

Question 35Single Answer

A
The atmosphere is changing
B
so I have severe pain in my body
C
if you have any painkiller, please give it to me
D
No error

Question 36Single Answer

A
No one is without fault
B
because no one is God
C
and only God is fault free
D
No error

Question 37Single Answer

A
Your
B
clock is
C
one hour fast
D
No error

Question 38Single Answer

A
The lose of jobs
B
is regarded by some as an necessary evil
C
in the fight against infliation
D
No error

Question 39Single Answer

A
In science, the credit goes to a man
B
who convinces the world
C
not to the man to whom the idea first occurs
D
No error

Question 40Single Answer

A
It is only after
B
the match is over
C
that people realize how exciting it is
D
No error

Question 41Single Answer

Temperature can be expressed as derived quantity in terms of

A
length and mass
B
mass and time
C
length, mass and time
D
None of these

Question 42Single Answer

Which of the following is not a synthetic fibre:

A
Anygora
B
Rayon
C
Nylon
D
Polyster

Question 43Single Answer

Which one of the following is not contained in Portland cement ?

A
Ca₃Al₂O₆
B
Ca₃SiO₅
C
Ca₂SiO₄
D
Ca₃(PO₄)₂

Question 44Single Answer

Which of the following contain enzymes for cellular respiration ?

A
Dictyosomes
B
Endoplasmic reticulum
C
lysosomes
D
Mitochondria

Question 45Single Answer

Which one among the following nutrients is a strctural

A
Cell membrane
B
Plasma membrane
C
Cell wall
D
Nucleus

Question 46Single Answer

Which city is the host of the second edition of ‘The Africa-India Field Training Exercise’ AFINDEX-2023 ?

A
Pune
B
Panaji
C
Cairo
D
Nairobi

Question 47Single Answer

‘New India Literacy Programme’ will be implemented as which type of scheme ?

A
Central Sector Scheme
B
Centrally sponsored Scheme
C
Core Scheme
D
Core of the Core Scheme

Question 48Single Answer

Which state/UT recently released the ‘Lake Development Programme’ ?

A
Tamil Nadu
B
Telangana
C
Odisha
D
West Bengal

Question 49Single Answer

A ‘Space System Design Lab’ has been recently inaugurated in which state/UT ?

A
Gujarat
B
Karnataka
C
Andhra Pradesh
D
Kerala

Question 50Single Answer

India recently signed a ‘Defence Cooperation Agreement’ with which European country ?

A
Malta
B
Romania
C
Finland
D
Denmark

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Electrical

Question 51Single Answer

Assuming both the voltage sources are in phase, the value of R for which maximum power is transferred from circuit A to circuit B is

A
0.8 Ω
B
1.4 Ω
C
2 Ω
D
2.8 Ω

Question 52Single Answer

For the intrinsic gallium-arsenide, the conductivity at room temperature 25°C is 10^-6 (ohm-m)^-1, the electron and hole nobilities are 0.85 m²/V-s and 0.04 m²/V-s respectively. What is the intrinsic carrier concentration at the room temperature?

A
7.0 × 10¹² m^-3
B
7.0 × 10^-12 m^-3
C
7.0 × 10^-12 m³
D
7.0 × 10¹² m³

Question 53Single Answer

The resistivity of intrinsic germanium at 30°C is 0.46 –m. What is the intrinsic carrier density at 30°C if the electron mobility is 0.38 m²/V-s and the hole mobility is 0.18 m²/V-s?

A
9.2 × 10⁵/m³
B
2.77 × 10³/m³
C
2.43 × 10¹⁹/m³
D
8.9 × 10¹²/m³

Question 54Single Answer

Heat conduction in a semiconductor takes place

A
By the mobility of the carriers
B
Due to energy gap between conduction band and valency band
C
By the holes and thermal vibrations of atoms
D
By the electrons and thermal vibrations of atoms

Question 55Single Answer

Brewster angle is the angle when a wave is incident on the surface of a perfect dielectric at which there is no reflected wave and the incident wave is

A
Parallel polarized
B
Perpendicularly polarized
C
Normally polarized
D
None of the above

Question 56Single Answer

An electrical breakdown of a p-n junction occurs if

A
Forward voltage increases up to the rating
B
Reverse voltage increases beyond the rating
C
Forward voltage decreases below the rating
D
Reverse voltage decreases below the rating

Question 57Single Answer

The chief deterrent to the widespread application of superconducting materials is

A
Very difficult to form, machine or case
B
The difficult in attaining and maintaining extremely low temperature
C
The poor strength-to-weight ratio
D
The lower oxidation rate at elevated temperatures

Question 58Single Answer

Which one of the following properties is not observed in the carbon nanotubes ?

A
High stiffness and strengths
B
Low densities
C
Unusual electrical property
D
Non-ductile

Question 59Single Answer

The evidence for the importance of electron-phonon interaction in super-conductors comes from

A
Meissner effect
B
Josephson effect
C
Isotope effect
D
x quantization experiments

Question 60Single Answer

Which one of the following materials is used for cable insulation ?

A
Phenol formaldehyde
B
Polytetrafluoroethylene
C
Polyvinyl chloride
D
Acrylonitrile butadiene styrene

Question 61Single Answer

For high speed reading and storing of information in a computer, the material used is

A
Ferrite
B
Piezoelectric
C
Pyroelectric
D
Ferromagnetic above 768°C

Question 62Single Answer

The temperature above which an anti-ferromagnetic material becomes paramagnetic is called

A
Peak temperature
B
Neel temperatur
C
Critical temperature
D
Weiss temperature

Question 63Single Answer

Which effect is the converse of Peltier effect ?

A
Seeback effect
B
Thomson effect
C
Hall effect
D
Joule effect

Question 64Single Answer

Magnetic materials which may be readily magnetized in either direction are

A
Soft magnetic materials
B
Hard magnetic materials
C
High eddy current loss materials
D
High hysteresis loss materials

Question 65Single Answer

Consider the following statements regarding a ferromagnetic material:
1.Below the ferromagnetic Curie temperature, the ferromagnetic materials exhibit hysteresis effect.
2.The coercive force is the filed required to reduce the flux density to zero.
Which of the above statements is/are correct?

A
Both 1 and 2
B
Neither 1 nor 2
C
1 only
D
2 only

Question 66Single Answer

The impact ionization phenomenon in semiconductor may be viewed as the reverse process of

A
Radiative recombination
B
Auger recombination
C
Surface recombination
D
Shockley-Read-Hall recombination

Question 67Single Answer

Refractive index of a slice glass can be reduced by doping it with tiny amount of

A
GeO₂
B
B₂O₃
C
P₂O_5x
D
Al₂O₃

Question 68Single Answer

If a diameter of a copper wire is increased by two times keeping its terminal voltage same, then the drift velocity will

A
Become twice
B
Become half
C
ecome four times
D
Remain unchanged

Question 69Single Answer

In an induction type energy meter, the steady speed attained by the rotating disc is
1.Proportional to the deflecting torque.
2.Proportional to the resistance of the path of eddy currents.
3.Inversely proportional to the effective readings of disc from its axis.
4.Inversely proportional to the square of brake magnetic flux.
Which of the above are correct?

A
1, 2 and 3 only
B
1, 2 and 4 only
C
2, 3 and 4 only
D
1, 2, 3 and 4

Question 70Single Answer

If ‘KCLFTSB’ stands for ‘best of luck’ and ‘SHSWDG’ stands for ‘good wishes’, which of the following indicates ‘ace the exam’?

A
MCHTX
B
MXHTC
C
XMHCT
D
XMHTC

Question 71Single Answer

Consider the following statements associated with the basic electrostatic properties of ideal conductors:
1.The resultant field inside is zero.
2.The net charge density in the interior is zero.
3.Any net charges reside on the surface.
4.The surface is always equipotential.
5.The field just outside is zero.
Which of the above statements are correct?

A
1, 2, 3 and 4
B
3, 4 and 5 only
C
1, 2 and 3 only
D
2 and 3 only

Question 72Single Answer

A semiconductor device made out of a material having very high temperature coefficient of resistance is

A
Transistor
B
Varistor
C
Thyristor
D
Thermistor

Question 73Single Answer

The electrical conductivity of a semiconductor increases with increase in temperature because

A
The carrier concentration increases
B
The mobility of carrier increases
C
Both carrier concentration and mobility increases
D
The band gap decreases

Question 74Single Answer

Which of the following are associated with soft superconductors?
1.Silsbee’s rule
2.Meissner effect
3.Faraday rotation
4.Curie-Weiss law

A
2, 3 and 4
B
1 and 3 only
C
1 and 2 only
D
2 and 3 only

Question 75Single Answer

In a two-channel oscilloscope operating in x-y mode, two in-phase 50 Hz sinusoidal waveforms of equal amplitude are fed to the two channels. What will be the resultant pattern on the screen?

A
An ellipse
B
A parabola
C
Straight line inclined at 45 with respect to x-axis
D
A circle

Question 76Single Answer

Materials, whose resistivity at very low temperature plunges from a finite value to zero and remains there upon further cooling, are known as

A
Ferromagnetic materials
B
High-energy hard magnetic materials
C
Superconductors
D
Ferromagnetic materials

Question 77Single Answer

In a superconductor, is the temperature is decreased below its critical temperature, the value of critical magnetic field will

A
Increase
B
Decrease
C
Not change
D
Increase or decrease depending on the superconductor material

Question 78Single Answer

The imaginary part of dielectric constant determines

A
Component of current which is in phase with the applied field
B
Component of energy absorbed per m³
C
Amount of applied field
D
Component of voltage which is in phase with the applied field

Question 79Single Answer

Direction: Each of the items consists of two statements, one labeled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the codes given below

A
Statement (I):Hard magnetic materials are used for making permanent magnets.
Statement (II):
Hard magnetic materials have relatively small and narrow hysteresis loop.
B
Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
C
Both Statement (I) and Statement (II) are individually true and Statement (II) is NOT the correct explanation of Statement (I)
D
Statement (I) is true but Statement (II) is false
E
Statement (I) is false but Statement (II) is true

Question 80Single Answer

In 8085A microprocessor, the operation performed by the instruction LHLD 2100 H is

A
(H) ← 21 H, (L) ←00
B
(H) ← M (2100 H), (L) ←M(2101H)
C
(H) ← M (2100 H), (L) ←M(2100H)
D
(H) ← 00H, (L) ←21H

Question 81Single Answer

If the magnetic susceptibility of a specimen is small and positive, the specimen is

A
Diamagnetic
B
Paramagnetic
C
Ferromagnetic
D
Non-magnetic

Question 82Single Answer

Manganese ferrite is a 1 : 1 mixture of

A
Manganese nitride and iron oxide
B
Manganese oxide and iron nitride
C
Manganese nitride and iron sulphide
D
Manganese oxide and iron sulphide

Question 83Single Answer

When a ferromagnetic substance is magnetized, small changes in dimensions occur. Such a phenomenon is known as

A
Magnetic hysteresis
B
Magnetic expansion
C
Magnetostriction
D
Magneto-calorisation

Question 84Single Answer

In ferromagnetic , anti-ferromagnetic and ferromagnetic materials, the atomic thermal motions counteract the coupling forces between the adjacent atomic dipole moments, thereby causing

A
Some dipole misalignment regardless of whether an external field is present
B
Increase in dipole alignment regardless of whether an external field is present
C
No effect on dipole alignment
D
Atoms tend to de-randomize the direction of moments

Question 85Single Answer

The Hall effect voltage in intrinsic silicon

A
Is positive
B
Is zero
C
Is negative
D
Changes its sign based on application of magnetic field

Question 86Single Answer

Most outstanding property of indium antimonide is

A
A very wide range gap
B
High resistivity at room temperature
C
High carrier mobility
D
Very low conductivity at room temperature

Question 87Single Answer

Which of the following semiconducting compounds is used in photoconductive devices?

A
Caesium antimonide
B
Barium oxide
C
Lead sulphide
D
Zinc oxide

Question 88Single Answer

Consider the following transducers:
1.LVDT
2.Piezoelectric
3.Thermocouple
4.Photovoltaic cell
Which of the above are active transducers?

A
1, 2 and 3
B
1, 2 and 4
C
2 and 3 only
D
2, 3 and 4

Question 89Single Answer

Consider the following statements regarding magnetic materials:
1.A diamagnetic material has no permanent dipole
2.Paramagnetic material has anti-parallel orientation of equal moments with neighboring dipoles
3.Ferrimagnetic material has anti parallel orientation of unequal moments between neighboring dipoles
4.Anti-ferromagnetic material has negligible interaction between neighboring dipoles
Which of these statements are correct?

A
1 and 2
B
3 and 4
C
2 and 4
D
1 and 3

Question 90Single Answer

Consider the following statements regarding hysteresis loops of hard and soft magnetic materials:
1.Hysteresis loss of hard magnetic material will be less than that of soft material
2.Coercivity of hard materials will be greater than that of soft material
3.Retentivity of the two materials will always be equal
Which of these statements are correct?

A
1, 2 and 3
B
2 only
C
3 only
D
1 and 3 only

Question 91Single Answer

Loss-tangent in plane waves in lossy dielectrics will be

A
Proportional to the Y component of the magnetic field intensity (H_Y)
B
Inversely proportional to the Y component of the magnetic field intensity (H_Y)
C
Inversely proportional to the X component of the magnetic field intensity (H_X)
D
proportional to the X component of the magnetic field intensity (H_X)

Question 92Single Answer

Orientational polarization is

A
Inversely proportional to temperature and proportional to the square of the permanent dipole moment
B
proportional to temperature as well as to the square of the permanent dipole moment
C
proportional to temperature and inversely proportional to the square of the permanent dipole moment
D
Inversely proportional to temperature as well as to the square of the permanent dipole moment

Question 93Single Answer

Behavior of conductors, semiconductors and insulators is explained on the basis of

A
Atomic nature
B
Molecular structure
C
Energy band structure
D
All of the above

Question 94Single Answer

In general, for a superconductor, which of the following statements is true?

A
A superconductor is a perfect paramagnetic material with the magnetic susceptibility equals to positive unity
B
A superconductor is a perfect diamagnetic material with the magnetic susceptibility equals to negative one
C
A superconductor is a perfect ferromagnetic material with the magnetic susceptibility equals to positive one
D
A superconductor is a perfect piezoelectric material with the magnetic susceptibility equals to negative one

Question 95Single Answer

Ferro-electric materials have a

A
High dielectric constant which varies non linearly
B
Low dielectric constant and is non-linear
C
High dielectric constant which varies linearly
D
Low dielectric constant but linear

Question 96Single Answer

In the magnetic core the electromotive forces (emf) induced in accordance with Faraday’s law of electromagnetic induction give rise to

A
Eddy current
B
Excitation current
C
Armature current
D
Field current

Question 97Single Answer

Consider the following characterizing parameters of a material:
1.Magnetic permeability
2.Electron relaxation time
3.Electron effective mass
4.Energy band gap
In case of metals, increase in one of the above parameter decreases its conductivity, while increase in another increases the conductivity. There are respectively

A
1 and 3
B
3 and 2
C
4 and 3
D
1 and 2

Question 98Single Answer

Some magnetic materials may be classified on the basis of
1.Susceptibility
2.Saturation
3.Spin arrangement
4.Nature of hysteresis loop
5.Domain structure
6.Critical temperature above which it behaves as a paramagnetic material
Which of these can be used to distinguish between ferri and ferromagnetic materials?

A
1, 3 and 4 only
B
2, 3 and 6 only
C
3, 4 and 5 only
D
1, 2, 3, 4, 5 and 6

Question 99Single Answer

Magnetism is mainly due to only electron spin around their axis in case of

A
Diamagnetic materials
B
Paramagnetic materials
C
Ferromagnetic materials
D
Paramagnetic and Diamagnetic materials

Question 100Single Answer

For Paramagnetic materials, the relative permeability is

A
Less than unity but magnetic susceptibility is relatively small and positive
B
greater than unity and magnetic susceptibility is relatively small but positive
C
equal to unity and magnetic susceptibility is relatively large but positive
D
Less than unity but magnetic susceptibility is relatively large and positive

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Electrical

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