Mechanical Engineering Quiz - set 03


1. If the level of tension in the belt is too high, it can result in a loss of power or in bending of the rotating shaft or crankshaft.
Correct
Incorrect

2. Inter-cooling in compressors results in saving of power in compressing given volume of air to a given pressure.
Correct
Incorrect

3. A steel with carbon above 0.8% is known as hypereutectoid steel.
Agree
Disagree

4. Defrosting of a refrigerator may be done by stopping the compressor for a short period.
Correct
Incorrect

5. The overshot water wheels are those in which the wheel runs entirely by the ________ of water.
Weight
Impulse

6. The diesel engines are also known as _________ engines.
Compression ignition
Spark ignition

7. Line organization is suitable for a big organization.
Correct
Incorrect

8. Cemented carbide tool tips are produced by powder metallurgy.
True
False

9. A grate, in a boiler, is a place in the combustion chamber upon which fuel (wood or coal) is burnt.
True
false

10. Hydrogen is the _________ substance.
Lightest
Heaviest

11. All the commercial liquid fuels are derived from natural petroleum (or crude oil).
True
false

12. Surface plate is used to check the trueness of flat surfaces.
True
False

13. The heat transfer by conduction through a thick sphere is same as through a thick cylinder.
True
false

14. The temperature of air recorded by a thermometer, when the moisture present in it begins to condense, is called wet bulb temperature.
Yes
No

15. Ordinary water is sometimes used as moderator when enriched uranium is used as a fuel in nuclear power plants.
Yes
No

16. The boiling point of R-12 is about -30°C.
True
False

17. The detonation is also called knocking or pinking.
Yes
No

18. A round nose tool may be fed either from left to right end or from right to left end of the lathe bed.
Yes
No

19. A fine grained grinding wheel is used to grind hard materials.
Correct
Incorrect

20. An axial compressor gives optimum performance at high speeds and large volume flows.
Agree
Disagree

     Score =

Correct answers:


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