Mechanical Engineering Quiz - Set 07 - ObjectiveBooks

Mechanical Engineering Quiz - Set 07

Quiz Questions

01. The kinetic energy of molecules of a gas becomes zero at absolute zero temperature.

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

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

04. The ferrous metals require more machining allowance than nonferrous metals.

05. There is no change in internal energy in an isothermal process.

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

07. In machining soft materials, a tool with negative relief angle is used.

08. Linear programming model can be applied to line balancing problem and transportation problem.

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

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

11. The condition of refrigerant after leaving the compressor and before entering the condenser is superheated vapour.

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

13. Workdone by an air compressor ________ upon the way in which the air is compressed.

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

15. The heat transfer by radiation ________ a medium.

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

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

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

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

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

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