Mechanical Engineering Quiz - Set 02


1. The engine's idling speed will increase by a slight degree immediately after a cold engine has been started. It will drop as the engine warms up and it will eventually reach the standard level.
True
False

2. The speed of rotary air compressor is ________ as compared to reciprocating air compressor.
High
Low

3. Aluminium has low density and addition of silicon improves its fluidity and therefore, its castability.
Correct
Incorrect

4. The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing.
Correct
Incorrect

5. The compression ratio in Diesel engines is less than the petrol engine.
Agree
Disagree

6. The operation of the reciprocating air motor is similar to reciprocating air compressor.
True
False

7. Cast iron is a ductile material.
Correct
Incorrect

8. The oxidizing flame is similar to neutral flame but the inner cone is less luminous and shorter.
Yes
No

9. Toe-in ensures parallel rolling of the wheel thus stabilizing steering in addition to preventing both sides slipping and excessive tyre wear.
Correct
Incorrect

10. In a two stage reciprocating compressor with intercooler, the amount of work saved with incomplete intercooling is ________ that in case of complete intercooling.
Less than
More than

11. The addition of copper to aluminium possesses maximum strength after heat treatment and age-hardening
Correct
Incorrect

12. Cold working distorts grain structure and does not provide an appreciable reduction in size.
Correct
Incorrect

13. In comparison to frame type construction, the frameless structure construction of automobiles is economical when produced in ________ numbers.
Small
Large

14. The free air delivery is the volume of air that can be delivered by a compressor freely.
True
False

15. In iron, the presence of carbon in free form is called graphite.
Agree
Disagree

16. Hot piercing is extensively used for making bolts and nuts.
Yes
No

17. When the vehicle is at rest, the clutch is in engaged position.
Correct
Incorrect

18. A regenerator in a gas turbine improves thermal efficiency.
Correct
Incorrect

19. In a body centered cubic space lattice, there are nine atoms out of which eight atoms are located at the corners of the cube and one atom at its centre.
Yes
No

20. A stripper plate machine is used to draw the pattern from the mould.
Yes
No

     Score =

Correct answers:


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