Mechanical Engineering Quiz - Set 09


1. Ericsson cycle consists of two constant pressure and two isothermal processes.
Agree
Disagree

2. When a pattern is made in three parts, the bottom part is known as a cope.
True
false

3. For maximum discharge through a chimney, the temperature of flue gases inside the chimney should the slightly more than the atmospheric temperature.
Correct
Incorrect

4. The internal flue tubes of a Lancashire boiler are reduced in diameter at the back to provide access to the lower part of the boiler.
True
False

5. In hot machining, solid carbide tools are preferred over high speed steel tools.
True
False

6. A dummy activity becomes a critical activity when its earliest start time (EST) is same as its latest finishing time (LFT).
Correct
Incorrect

7. Supercharging _________ the power developed by the engine.
Increases
Decreases

8. In a mixed flow reaction turbine, the flow of water is partly radial and partly axial.
Correct
Incorrect

9. Sulphur dioxide is extremely toxic and non-flammable.
True
False

10. Martensite has needle like structure and is magnetic.
Correct
Incorrect

11. In jet propulsion power unit, the inlet duct of diverging shape is used for converting kinetic energy of air into pressure energy.
True
False

12. The transfer of heat from one body to another takes place only when there is a temperature difference between the bodies.
Yes
No

13. A Pelton wheel with one nozzle is preferred for a specific speed between 35 to 60 r.p.m.
True
False

14. An atom bomb utilises uncontrolled nuclear fission.
True
False

15. In time study, normal time is more than the standard time.
Yes
No

16. A dense structure of a grinding wheel is denoted by the number 9 to 15 or higher.
Yes
No

17. The drawing down is a process of ________ the cross-section of a bar.
Increasing
Reducing

18. The isothermal and isentropic processes are reversible non-flow processes.
Agree
Disagree

19. In a fire tube boiler, the water is contained inside the tubes which are surrounded by flames and hot gases from outside.
True
False

20. The compressor efficiency is defined as the ratio of volume of free air delivery per stroke to the swept volume of the piston.
Correct
Incorrect

     Score =

Correct answers:


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