Mechanical Engineering Quiz - Set 18


1. The distance moved by the valve from one end to the other end is called valve travel.
True
False

2. A diesel engine has inlet valve, fuel injection valve and exhaust valve.
Yes
No

3. The radius of gyration is the distance where the whole mass (or area) of a body is assumed to be concentrated.
Incorrect
Correct

4. The thickness of key is usually taken equal to one-sixth of diameter of shaft.
Yes
No

5. Gagger is used for cleaning the moulding sand.
Correct
Incorrect

6. Power screws are used to convert rotary motion into translatory motion.
True
False

7. A Watt's governor is a spring loaded governor.
Yes
No

8. As the cutting speed increases, tool life decreases.
Yes
No

9. A large electrode is used in unshielded arc welding.
Correct
Incorrect

10. The unit of mass moment of inertia in S.I. units is kg-m2.
True
False

11. The plunge grinding requires very _________ speed.
High
Low

12. A pouring basin acts as a reservoir for the molten metal.
Agree
Disagree

13. Frequency of vibrations means the number of cycles per second.
No
Yes

14. Sulphur dioxide has the lowest boiling point.
Yes
No

15. In bending operation, the metal takes the shape of a punch.
Yes
No

16. The efficiency of a screw jack is dependent upon the load raised or lowered.
True
False

17. The entropy is a point function and thus it is a property of the same.
Correct
Incorrect

18. The kinetic energy of a body __________ upon its mass and velocity.
Does not depend
Depends

19. The critical pressure gives the velocity of steam at the throat equal to the velocity of sound.
Agree
Disagree

20. The work-done in a free expansion process is zero.
True
False

     Score =

Correct answers:

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