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Old 10th December 2014, 04:06 PM
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Join Date: Apr 2013
Default Re: BHEL Supervisor Trainee Mechanical Exam Papers

You are looking for BHEL Supervisor Trainee Mechanical Exam Papers, here I am giving;

The chronological order of strokes in a four stroke petrol engine is
1] Suction stroke, working stroke, compression stroke and exhaust stroke.
2] Suction stroke, compression stroke, working stroke and exhaust stroke.
3] Compression stroke, working stroke, suction stroke and exhaust stroke.
4] Compression stroke, suction stroke, working stroke and exhaust stroke.

The enthalpy of steam is defined as
1] Difference of internal energy and product of pressure and volume.
2] Product of internal energy and pressure.
3] Sum of internal energy and product of pressure and volume.
4] Amount of heat change divided by the absolute temperature.

Which of the following operations can be performed using a drilling machine
A. Reaming B. Countersinking C. Spot Facing D.
Thread tapping
1] Only A, B and D 2] Only B, C and D 3] Only A, B and C 4] All of

Which of the following are the advantages of impulse turbine over reaction turbines
A. Occupies less space per unit power.
B. Compounding is not necessary for speed reduction as the rotor speeds are usually low.
C. Suitable for high power generation.
1] B and C only 2] A only 3] C only 4] A and C only

Maximum power transfer through line V1= 110 kv, V2= 100kv, X=22 ohm is
a 500 MW
b 500 KW
c 250 MW
d 250 KW
Ans 500 MW

Q.Which type of power plant requires maximum expenditure
a Hydel power plants
b Nuclear power plants
c Thermal power plants
d Gas based power plants

Q.Base load of a power station stands for
a 2-4 hoursday
b 4-8 hoursday
c 8-12 hoursday
d 12-24hoursday
Ans 12-24hoursday

Q.A wire is placed on the top of a transmission line to protect from
a surge high voltage
b Direct lightning strocks
c indirect lightnin strocks
d Switching over voltages
Ans Direct lightning strocks

Q.A wire is placed on the top of a transmission line acts as
a acts as a phase wire
b acts as neutral
c acts as a transmission wire
d acts as ground wire

Which of the following can be magnified by magnetic amplifier
(a) voltage
(b) current
(c) power
(d) none of above

The inductance is not used in lag network because of
(a) big size
b) time delay and hysteresis losses
(c) high reactance
(d) none of these

Saturation in a stable control system can cause
(a) conditional stability
(b) over damping
(c) low level oscillations
(d) high level oscillations

Excessive noise in control systems can cause
a) reduction in bandwidth
(b) reduction in gain
(c) saturation in amplifying stages
(d) oscillations

The type-0 system has
(a) net pole at the origin
(b) no pole at the origin
(c) simple at one origin
(d) two poles at the origin

In control systems, excessive bandwidth should be avoided because
(a) noise is proportional to bandwidth
(b) it leads to low relative stability
(c) it leads to slow speed of response
(d) none of these

In most systems, an increase in gain leads to
(a) larger damping ratio
(b) smaller damping ratio
(c) constant damping ratio
(d) none of these

A step function is applied to the input of a system and output is of the form y = t, the system is
(a) stable
(b) unstable
(c) not necessarily stable
(d) conditionally stable

The function of the safety resistor in ohm meter is to
(a) limit the current in the coil
(b) increase the voltage drop across the coil
(c) increase the current in the coil
(d) protect the battery

Which of the following instruments is free from hysteresis and eddy current losses
(a) M.l. instrument
(b) electrostatic instrument
(c) electrodynamometer type instrument
(d)all of these

The dielectric loss of a capacitance can be measured by
(a) Wien bridge
(b) Owen bridge
(c) Schering bridge
(d) Maxwell bridge

Reed frequency meter is essentially a
(a) recording system
(b) deflection measuring system
(c) vibration measuring system
(d) oscillatory measuring system

In measurements made using a Q meter, high impedance elements should preferably be connected in
(a) star
(b) delta
(c) series
(d) parallel

A digital voltmeter measures
(a) peak value
(b) peak-to-peak value
(c) rms value
(d) average value
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Old 19th May 2015, 01:23 PM
Default Re: BHEL Supervisor Trainee Mechanical Exam Papers

Hi I want the question paper of Mechanical of BHEL Supervisor Trainee exam so will you please provide me?
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Old 19th May 2015, 01:23 PM
Super Moderator
Join Date: Apr 2013
Default Re: BHEL Supervisor Trainee Mechanical Exam Papers

Ok, as you want the question paper of Mechanical of BHEL Supervisor Trainee exam so here I am providing you.

BHEL Supervisor Trainee Mechanical question Paper

There are total of 240 questions.

120- Technical questions in Mechanical Engineering
120- General Aptitude questions

1)Unit of Entropy (J/kg K or kJ/kg K)

2)A mass of 100kg is falling from a height of 1 m and penetrates the sand into for 1 m. What is the resistance force given by sand.

3)Ratio of specific heats of air. (1.41)

4)A body weighs 3 kg in air. If it is submerged in a liquid, it weighs 2.5 kg. What is the specific gravity of the liquid.

5)Two cars travell in same direction at 40 km/hr at a regular distance. A car comes in a opposite direction in 60km/hr. It meets each car in a gap of 8 seconds. What is the distance between them?

6)A simple problem involing in hoops stress. For sphere: M= [3/2]*p*V*[density of pressure vessel material/Maximum working stress it can tolerate] For Thin walled pressure walls: Hoops stress or stress in the radial direction =p*r/2t

7)A problem in force calculation in a body moving in a inclined surface.

8)Composition of bronze. (Copper+zinc)

9)Compostion of stainless steel.(iron+chromium+nickel+carbon)

10)CI is manifactured in which process. (cupola process) 11)What percentage of carbon is preset in pig iron. (4.5 to 6%)

12)Water is available at 10m height. What is the pressure available? (pressure=density*g*height; p=1000*9.81*10; p=98100N/m2) Ch

13)What will happen if the speed of the centrifugal pump doubles.

14)The unit eV is widely used in ? (Nuclear and atomic physics)

15)What will happen to the resistance, when the diameter of the conductor is doubled?

16)The power comsumed by a electrical device is 1000W at 250V, What is the resistance in the device? (Power= Voltage*current; Current=Power/Voltage, Current,I=1000/250=4 amps. V=IR, Therefore R=250/4=62.5 ohms)

17)Why DC current is not used in transformer.

18)On what principle the sonar/ radar works?

19)Bending moment diagram for the UDL is in what shape?

20)Function of the distributor in petrol vehicles? (Spark timing) 21)Which is not present in CI engines? (carburrettor)

22)What will happen if one cylinder recieves more amount of fuel spray from injectors than other injectors?

23)Purpose of draft tube in hydraulic turbines? (The purpose of a draft tube is toconvert some of the kinetic energy of the flow from the runner (the rotating part of the turbine) intopressure energy and thereby increase the efficiency ofthe hydro power turbine.)

24)What is the effect or reheater in the gas turbine? (The advantage of reheater is significantly increased thrust; the disadvantage is it has very high fuel consumption and inefficiency) )Problems involving with fricition coefficient.

26)Factor of safety = Yeild stress/Working stress. 27)Which is the example of non parallel power transmission (Universal coupling) 28)For perpendicular shafts worm gear is used.

29)A planet gear with 25 teeth is meshed with a sun gear of 100 teeth. Both are connected using a arm. How many rotations are needed for planet gear to complete one rotation around the sun gear?

30)What is equivalent spring constant for spring in parallel?

31) Some questions was asked related to boundry layer and vortex flow.

32) 5 questions were asked in PERT, Process planning, Product planning, Break even analysis.

33)How are tungsten and sintered composite materials are machined? (Electro Discharge Machining, EDM)
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