Discussion
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- Question
If clearance volume of I.C. engines is increased, the compression ratio will
Options- A. increase
- B. decrease
- C. remain constant
- D. be doubled
- Correct Answer
- decrease
- 1. In an irreversible process, there is a
Options- A. loss of heat
- B. no loss of heat
- C. gain of heat
- D. no gain of heat Discuss
- 2. A cycle consisting of __________ and two isothermal processes is known as Stirling cycle.
Options- A. two constant pressure
- B. two constant volume
- C. two isentropic
- D. one constant pressure, one constant volume Discuss
- 3. In order to avoid cavitation in centrifugal pumps
Options- A. the suction pressure should be high
- B. the delivery pressure should be high
- C. the suction pressure should be low
- D. the delivery pressure should be low Discuss
- 4. In high speed steels, vanadium adds to the property of red hardness and tungsten and chromium add to high wear resistance.
Options- A. True
- B. False Discuss
- 5.
The above figure shows the two equal forces at right angles acting at a point. The value of force R acting along their bisector and in opposite direction is
Options- A. P/2
- B. 2P
- C.
- D.
Discuss
- 6. The numerical value of the thermal capacity and the water equivalent of the substance are the same.
Options- A. Agree
- B. Disagree Discuss
- 7. The grinding operaion is a
Options- A. shaping operation
- B. forming operation
- C. surface finishing operation
- D. dressing operation Discuss
- 8. In order to measure the flow with a venturimeter, it is installed in
Options- A. horizontal line
- B. inclined line with flow upwards
- C. inclined line with flow downwards
- D. any direction and in any location Discuss
- 9. When a steel containing more than 0.8% carbon is cooled slowly below the lower critical point, it consists of
Options- A. mainly pearlite
- B. mainly ferrite
- C. ferrite and pearlite
- D. pearlite and cementite Discuss
- 10. The gross or total head of the turbine is the __________ of the water levels at the head race and tail race.
Options- A. sum
- B. difference
- C. product Discuss
More questions
Correct Answer: loss of heat
Correct Answer: two constant volume
Correct Answer: the suction pressure should be high
Correct Answer: True
Correct Answer:
Correct Answer: Agree
Correct Answer: surface finishing operation
Correct Answer: any direction and in any location
Correct Answer: pearlite and cementite
Correct Answer: difference
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