Question Bank
WBPDCL Assistant Manager Mechanical Exam - English
Duration: 120 · Questions: 100 · Max Marks: 100 · Language: 3
General Aptitude
1
Yojna a weekly journal
2
I go to Madurai by —– Vaigai Express
3
Have the car stolen!
4
The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.
5
Assets
6
How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?
7
Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is
8
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 ?
9
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?
10
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:__________ ?
11
Which of the following numbers is irrational ?
12
356 x 936 – 356 x 836 = ?
13
Arrange in descending order: 5/8, 7/10, 3/4
14
How many employees of bank ‘X’ opted for VRS ?
(I) 18% of the 950 officer cadre employees and 6% of the 1100 of all other cadre employees opted for VRS.
(II) 28% of the employees in the age group of 51 to 56 and 17% of the employees in all other age groups opted for VRS.
(I) 18% of the 950 officer cadre employees and 6% of the 1100 of all other cadre employees opted for VRS.
(II) 28% of the employees in the age group of 51 to 56 and 17% of the employees in all other age groups opted for VRS.
15
The area of a playground is 1600 square meters. What is its perimeter ?
(I) It is a perfect square playground
(II) It costs Rs.3200 to put a fence around the playground at the rate of Rs.20 per meter.
(I) It is a perfect square playground
(II) It costs Rs.3200 to put a fence around the playground at the rate of Rs.20 per meter.
16
What is the value of m – n ÷ 37 ?
(I) m is the largest possible six-digit number and n is the smallest possible six-digit number.
(II) The difference between m and n is known.
(I) m is the largest possible six-digit number and n is the smallest possible six-digit number.
(II) The difference between m and n is known.
17
What is the value of x ?
(I) If 10 is added to x, the result is 34.
(II) If x is multiplied by y, the result is 38.
(I) If 10 is added to x, the result is 34.
(II) If x is multiplied by y, the result is 38.
18
The first Metro Railway Service in Kolkata began in the year
19
Kolkata - Mumbai National Highway via Agra is known as
20
Which state is hosting the National SARAS Mela 2025?
Mechanical
1
Which of the following is the unit of kinematic viscosity _________________?
2
Consider the following processes:
1. Extension of a spring
2. Plastic deformation of a material
3. Magnetization of a material exhibiting hysteresis
Which of the above process are irreversible?
1. Extension of a spring
2. Plastic deformation of a material
3. Magnetization of a material exhibiting hysteresis
Which of the above process are irreversible?
3
Which of the following statements are correct for a throttling process?
1. It is an adiabatic steady flow process
2. The enthalpy before and after throttling is same
3. In the processes, due to fall in pressure, the fluid velocity at outlet is always more than inlet velocity
1. It is an adiabatic steady flow process
2. The enthalpy before and after throttling is same
3. In the processes, due to fall in pressure, the fluid velocity at outlet is always more than inlet velocity
4
A Reversed Carnot Engine removes 50 kW from a heat sink. The temperature of the heat sink is 250 K and the temperature of the heat reservoir is 300 K. The power required of the engine is
5
A heat engine receives heat at the rate of 2500 kJ/min and gives an output of 12.4 kW. Its thermal efficiency is, nearly
6
Consider the following motions :
1. Piston reciprocating inside an engine cylinder
2. Motion of a shaft between foot-step bearings
Which of the above can rightly be considered as successfully constrained motion?
1. Piston reciprocating inside an engine cylinder
2. Motion of a shaft between foot-step bearings
Which of the above can rightly be considered as successfully constrained motion?
7
A rotor weighing 2 kN is supported on bearings A and B which are 1 m apart. The centre of mass of the rotor is at a distance 0.4 m from bearing A. It is observed that there is an unbalanced couple of magnitude 300 N-m which leaves the shaft balanced statically.The dynamic reactions at the supports will be
8
A cam is a mechanical member used to impart a desired motion to a follower by direct contact. Which one of the under-listed follower motion types will produce the least jerk to the system?
9
In a circular are cam with a roller follower, acceleration of the follower depends on
1. cam speed and location of centre of circular arc
2. roller diameter and radius of circular arc
Which of the above is/are correct?
1. cam speed and location of centre of circular arc
2. roller diameter and radius of circular arc
Which of the above is/are correct?
10
A manufacturing company is selling a product for 15 per unit with variable cost of 10 per unit. The fixed cost of the asset is 50,000. How many units should be produced to breakeven?
11
A spherical waterdrop of 1 mm in diameter splits up in air into 64 smaller drops of equal size. The surface tension coefficient of water in air is 0.073 N/m. The work required in splitting up the drop is
12
Consider the following statements pertaining to stability of floating bodies:
1. A floating body will be stable when the centre of gravity is above the centre of buoyancy.
2. The position of metacentres corresponding to different axes of rotation are generally different for the same floating object.
3. For cargo ships, the metacentric height varies with loading.
Which of the above statements are correct?
1. A floating body will be stable when the centre of gravity is above the centre of buoyancy.
2. The position of metacentres corresponding to different axes of rotation are generally different for the same floating object.
3. For cargo ships, the metacentric height varies with loading.
Which of the above statements are correct?
13
Water is coming out from a tap and falls vertically downwards. At the tap opening, the stream diameter is 20 mm with uniform velocity of 2 m/s. Assuming steady inviscid flow, constant pressure atmosphere everywhere, and neglecting curvature and surface tension effects, the diameter of the stream 0.5 m below the tap opening is nearly
14
Consider the following statements:
1. At low Reynolds numbers of any flow, viscous forces dominate over inertial forces.
2. Transition from laminar to turbulent flow occurs over a range of Reynolds numbers depending on the surface presented to the flow.
Which of the above statements is/are correct?
1. At low Reynolds numbers of any flow, viscous forces dominate over inertial forces.
2. Transition from laminar to turbulent flow occurs over a range of Reynolds numbers depending on the surface presented to the flow.
Which of the above statements is/are correct?
15
In a steady laminar flow of a given discharge through a circular pipe of diameter D, the head loss is proportional to
16
The centre-line velocity in a pipe flow is 2m/s. What is the average flow velocity in the pipe if the Reynolds number of the flow is 800?
17
During a constant pressure expansion of a gas, 33.3% heat is converted into work while the temperature rises by 20 K. The specific heat of the gas at constant pressure as a proportion of work, W is
18
A system of 100 kg mass undergoes a process in which its specific entropy increases from 0.3 kJ/kg K to 0.4 kJ/kg K. At the same time, the entropy of the surroundings decreases from 80 kJ/kg K to 75 kJ/kg K. The process is
19
A reversible heat engine rejects 80% of the heat supplied during a cycle of operation. If the engine is reversed and operates as a refrigerator, then its coefficient of performance shall be
20
For the same efficiency of the Brayton cycle and the Carnot cycle working between temperature limits of Tmax and Tmin, the power contribution of the Brayton cycle will be
21
A fin will be more effective when Bio number is
22
A tank of length, breadth and height in the ratio of 2:1:2 is full of water. The ratio of hydrostatic force at the bottom to that at any larger vertical surface is
23
Which of the following fluids exhibit a certain shear stress at zero shear strain rate followed by a straight line relationship between shear stress and shear strain rate?
24
What is the specific gravity of a marble stone, which weighs 400N in air, and 200N in water? (g=10m/s2)
25
What is the intensity of pressure in the following SI units, when specific gravity of mercury is 13.6 and the intensity of pressure is 400KPa ?
26
Consider the following statements:
1.If a small upward displacement is given to a floating body, it results in the reduction of the buoyant force acting on the body
2.A slight horizontal displacement does not change either the magnitude or the location of the buoyant force
Which of the above statements is/are correct?
1.If a small upward displacement is given to a floating body, it results in the reduction of the buoyant force acting on the body
2.A slight horizontal displacement does not change either the magnitude or the location of the buoyant force
Which of the above statements is/are correct?
27
State whether following flow field is physically possible?
28
In a differential manometer, a head of 0.5 m of fluid A in limb 1 is found to balance a head of 0.3 m of fluid B in limb 2. The atmospheric pressure is 760 mm of mercury. The ratio of specific gravities of A to B is
29
A Reversed Carnot Engine removes 50 kW from a heat sink. The temperature of the heat sink is 250 K and the temperature of the heat reservoir is 300 K. The power required of the engine is
30
On which of the following just in time manufacturing philosophy emphasizes ?
31
The elements of the set {x : x is an integer, x2 : 4} can be represent as .....Z..... . Here, Z refers to
32
33
If Y = {x : x is a positive factor of the number 2p – 1(2p – 1), where 2p – 1 is a prime number}, then Y can be represent in roster form as
34
The set {x : x is a positive integer less than 6 and 3x – 1 is an even number} in roster form is
35
If A 
B and A
B, then
B and A B, then36
The number of non-empty subsets of the set{1, 2, 3, 4} is
37
The number of elements of the power set of a set containing m elements is
38
If A = {x : x = n2, n = 1, 2, 3}, then number of proper subsets is
39
If A = {x : x = 4n + 1, 2 £ n £ 5},then number of subsets of A is
40
Let A and B be two non-empty subsets of a set X such that A is not a subset of B, then
41
If a submerged body displaced from its equilibrium position, returns to its original position, it is called __________.
42
In a flow measurement, a venturi meter is preferred over an orifice plate because _____.
43
Pitot tube measures ______.
44
Which of the following is not a property of an ideal fluid ?
45
Nozzle used in steam turbines convert ________.
46
Which of the following assumptions is the most relevant in air-standard cycle analysis ?
47
The modern Francis turbine is a ___________flow turbine .
48
Variation of stress with strain rate for a Newtonian fluid is ______ .
49
Which of the following is NOT a part of refrigeration systems ?
50
Which of the following is NOT an intensive property ?
51
Which of the following does NOT represent a unit of viscosity ?
52
__________ in the fuel is oxidised during knocking .
53
_________ is defined as the ability of a material to resist deformation under action of an external load .
54
Draught is produced in locomotive boilers by which of the following components ?
55
For a steady flow, the value of all fluid properties at any fixed point _________ .
56
For a floating body, if the metacentre is below the centre of gravity, then the body is said to be __________ equilibrium .
57
________ is useful for measuring flow of a conducting fluid .
58
A two- stroke engine consists of ________ port (s)
59
Air Cooling is mostly preferred for _________ .
60
_______ valves are provided in reciprocating compressors .
61
Benson boiler have ______ water drum (s)
62
_________ is used for pumping water into a boilers .
63
The function of a carburetor in internal combustion engines is :
64
The device which transfers energy from the ______ to _____ the is known as hydraulic turbine .
65
The flash chamber in the single stage VCR cycle serves to ________ .
66
Define thermodynamics .
67
Which of the following statements is correct about a Benson boiler ?
68
Within a refrigeration system, the expansion valve is incorporated between the ________ .
69
The reversed ______ cycle employed for passenger aircraft systems .
70
Fusible plug in a steam boiler is placed ______ .
Bengali
1
সঠিক বাক্যটি সনাক্ত করুন:
2
ক্রিয়াটির সঠিক অতীত ফর্মটি চয়ন করুন:
3
"শুভ" এর সঠিক প্রতিশব্দ নির্বাচন করুন:
4
বিশেষণটি চিহ্নিত করুন) বাক্যটিতে: তিনি শিশুর সাথে মৃদু কথা বলেছেন।
5
কোন বাক্যটি ব্যাকরণগতভাবে সঠিক?
6
বাংলা ভাষার প্রাথমিক পূর্বপুরুষ কোন ভাষা পরিবার?
7
বাংলা ভাষার বিকাশের প্রাচীনতম পর্যায় কোনটি?
8
প্রাচীন বাংলা থেকে মধ্য বাংলায় রূপান্তর কোন সময়কালে ঘটে?
9
কোন লেখাটিকে প্রাচীন বাংলা ভাষার প্রাচীনতম সাহিত্যিক প্রমাণ হিসেবে বিবেচনা করা হয়?
10
মধ্য বাংলার বিবর্তনে কোন ভাষার প্রভাব প্রধান ছিল?