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- Question
Surface plate is used to check the trueness of flat surfaces.
Options- A. True
- B. False
- Correct Answer
- True
- 1. In a domestic vapour compression refrigerator, the refrigerant commonly used is
Options- A. CO2
- B. Ammonia
- C. R-12
- D. all of these Discuss
- 2. A supercharged engine as compared to an ordinary engine
Options- A. is lighter
- B. requires smaller foundations
- C. consumes less lubricating oil
- D. all of these Discuss
- 3. Lancashire boiler has __________ internal flue tubes.
Options- A. one
- B. two
- C. three
- D. four Discuss
- 4. P.M.T.S. (Predetermined Motion Time Systems) include
Options- A. M.T.M. (Method Time Measurement)
- B. W.F.S. (Work Factor Systems)
- C. B.M.T.S. (Basic Motion Time Study)
- D. all of these Discuss
- 5. The cutting speed is minimum while machining __________ with a high speed steel tool.
Options- A. cast iron
- B. mild steel
- C. brass
- D. aluminium Discuss
- 6. The heat rejection factor (HRF) is given by
Options- A. 1 + C.O.P
- B. 1 - C.O.P.
- C.
- D.
Discuss
- 7. The shear force of a cantilever beam of length l carrying a uniformly distributed load of w per unit length is __________ at the fixed end.
Options- A. zero
- B. wl/4
- C. wl/2
- D. wl Discuss
- 8. A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as
Options- A. back pressure turbine
- B. pass out turbine
- C. low pressure turbine
- D. impulse turbine Discuss
- 9. According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through centre of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)
Options- A. IP = IG + Ah2
- B. IP = IG - Ah2
- C. IP = IG / Ah2
- D. IP = Ah2 / IG Discuss
- 10. In order to obtain a surface finish in the range of 0.75 ?m to 1.25 ?m , the operation used is called.
Options- A. grinding
- B. lapping
- C. honing
- D. buffing Discuss
More questions
Correct Answer: R-12
Correct Answer: all of these
Correct Answer: two
Correct Answer: all of these
Correct Answer: cast iron
Correct Answer:
Correct Answer: wl
Correct Answer: pass out turbine
Correct Answer: IP = IG + Ah2
Correct Answer: grinding
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