Mechanical Engineering Quiz - Set 07


1. The kinetic energy of molecules of a gas becomes zero at absolute zero temperature.
Agree
Disagree

2. In a die casting method, the molten metal is forced into mould under high pressure.
Correct
Incorrect

3. According to Gay-Lussac law for a perfect gas, p/T = constant, if v is kept constant.
True
False

4. The ferrous metals require more machining allowance than nonferrous metals.
True
False

5. There is no change in internal energy in an isothermal process.
Correct
Incorrect

6. An economiser is used to increase the temperature of saturated steam without raising its pressure.
Correct
Incorrect

7. In machining soft materials, a tool with negative relief angle is used.
Correct
Incorrect

8. Linear programming model can be applied to line balancing problem and transportation problem.
True
False

9. The pre-ignition occurs before the spark is produced whereas detonation develops after the introduction of spark.
Agree
Disagree

10. The principle of jet propulsion is used in driving the ships and aeroplanes.
Correct
Incorrect

11. The condition of refrigerant after leaving the compressor and before entering the condenser is superheated vapour.
Yes
No

12. In induction hardening, the depth of hardening is controlled by controlling the voltage.
Correct
Incorrect

13. Workdone by an air compressor ________ upon the way in which the air is compressed.
Depends
Does not depend

14. The austenite is a solid solution of carbon or iron carbide in gamma-iron.
Correct
Incorrect

15. The heat transfer by radiation ________ a medium.
Requires
Does not require

16. In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.
Agree
Disagree

17. A two stroke cycle engine gives _________ mechanical efficiency than a four stroke cycle engine.
Higher
Lower

18. The product layout is more amenable to automation than process layout.
True
False

19. In case of turning, as the machining proceeds, the spindle speed must ________ with the decrease in diameter of work.
Decrease
Increase

20. The function of a governor is to keep the engine speed uniform at all load conditions.
Correct
Incorrect

     Score =

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