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  #1  
1st October 2014, 12:13 PM
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Aptitude paper for Mechanical Engineering Students

Will you provide me model test paper of the Aptitude test for Mechanical Engineering Students ?
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  #2  
1st October 2014, 02:28 PM
Super Moderator
 
Join Date: Apr 2013
Re: Aptitude paper for Mechanical Engineering Students

Model papers are helpful for giving any exam or to fight any company placement test. You are here asking for the Aptitude test paper for Mechanical Engineering Students I am here providing you some frequently asked by the mechanical engineer recruiter companies.

Some of the questions are here that may help you.

1. A hollow shaft of same cross-section area as solid shaft transmits

A. Same torque

B. Less torque

C. More torque

D. Unpredictable

Answer:

B. Less torque

2. In a cantilever beam, maximum deflection occurs at where

A. Bending moment is zero

B. Bending moment is maximum

C. Shear force is zero

D. Slope is zero

Answer:

A. Bending moment is zero

3. In a rectangular beam, when width, depth and length are doubled, the bending stress will be

A. Shall remain unchanged

B. Shall be doubled

C. Shall become ¼ th

D. Shall be halved

Answer:

C. Shall become ¼ th

4. In an I –section beam, the bending moment is resisted mainly by

A. Flanges only

B. Web only

C. Both by flanges and web

D. None of the above

Answer:

B. Web only

5. In internal combustion (I.C.) engines, combustion of fuel takes place in

A. Outside the cylinder

B. Inside the cylinder

C. Not in the cylinder

D. None of the above

Answer:

B. Inside the cylinder

6. Power available at the shaft of an I.C engine is known is

A. Brake horse power

B. Indicated horse power

C. Net indicated horse power

D. Pumping power

Answer:

A. Brake horse power

7. In internal combustion engine piston the maximum temperature occurs at

A. Ring section

B. Gungeon pin

C. Bottom centre

D. Top centre

Answer:

A. Ring section

8. A two-stroke engine is generally preferred to a four-stroke engine because

A. It offers low fuel consumption

B. It gives lesser shocks and vibrations

C. It can be easily started

D. It has smaller size for the same output.

Answer:

D. It has smaller size for the same output.

9. During idling process, a petrol engine requires

A. Lean mixture

B. Rich mixture

C. Variable mixture

D. None of above

Answer:

A. Lean mixture

10. Cavitation in a pipe will begin when

A. Pressure at any location reaches pressure equal to the saturated vapour pressure of liquid

B. Pressure becomes more than critical pressure

C. Flow is increased

D. Pressure is increased

Answer:

A. Pressure at any location reaches pressure equal to the saturated vapour pressure of liquid

11. Capillary action of liquid is due to the

A. Viscosity of liquid

B. Cohesion of liquid particles

C. Surface tension

D. Adhesion of liquid particles on the surface

Answer:

B. Cohesion of liquid particles

12. In one ton refrigeration machine, the term “one ton” implies

A. One ton refrigerant is used

B. One ton water can be converted into ice

C. One ton ice when melts from and at 0oC in 24 hours, the refrigerating effects is equivalent to 3000 kcal/hour

D. None of the above

Answer:

C. One ton ice when melts from and at 0oC in 24 hours, the refrigerating effects is equivalent to 3000 kcal/hour

13. In a refrigeration cycle, the moisture content is to be removed before it enters into which system

A. Cold side of system

B. Evaporator

C. compressor

D. condenser

Answer:

B. Evaporator
  #3  
4th January 2016, 01:23 PM
Unregistered
Guest
 
Re: Aptitude paper for Mechanical Engineering Students

Hello sir I want to know about Aptitude paper for Mechanical Engineering Students so here can you please give me paper ?
  #4  
4th January 2016, 01:24 PM
Super Moderator
 
Join Date: Apr 2013
Re: Aptitude paper for Mechanical Engineering Students

Hey as per my idea Aptitude paper for Mechanical Engineering Students is not available

Here I am providing you Mechanical Engineering paper for BHEL



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?
ans. Copper+zinc.

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

10) CI is manifactured in which process?
ans. cupola process

11)What percentage of carbon is preset in pig iron?
ans. 4.5 to 6%.

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

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

14)The unit eV is widely used in ?
ans. 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?
ans. 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?
ans. Spark timing.

21)Which is not present in CI engines?
ans. 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?

ans. 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.

25)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 boundary 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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