Steam Boilers and Engines problems
- 1. A receiver type compound engine, requires a lighter flywheel.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 2. The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called
Options- A. safety valve
- B. water level indicator
- C. pressure gauge
- D. fusible plug Discuss
Correct Answer: safety valve
- 3. The high steam and low water safety valve is not used in
Options- A. Cochran boiler
- B. Cornish boiler
- C. Lancashire boiler
- D. Locomotive boiler Discuss
Correct Answer: Locomotive boiler
- 4. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called
Options- A. blow off cock
- B. stop valve
- C. superheater
- D. none of these Discuss
Correct Answer: none of these
- 5. The actual power generated in the engine cylinder is called
Options- A. indicated power
- B. brake power
- C. frictional power
- D. none of these Discuss
Correct Answer: indicated power
- 6. The ratio of heat actually used in producing the steam to the heat liberated in the furnace is known as equivalent evaporation from and at 100° C.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Incorrect
- 7. The length of Cornish boiler varies from
Options- A. 2 to 4.5 m
- B. 3 to 5 m
- C. 5 to 7.5 m
- D. 7 to 9 m Discuss
Correct Answer: 5 to 7.5 m
- 8. An economiser is generally placed between
Options- A. last superheater or reheater and air preheater
- B. induced draft fan and forced draft fan
- C. air preheater and chimney
- D. none of the above Discuss
Correct Answer: last superheater or reheater and air preheater
- 9. The amount of water evaporated from and at 100° C into dry and saturated steam is called evaporative capacity of a boiler.
Options- A. Yes
- B. No Discuss
Correct Answer: No
- 10. The function of a piston in a steam engine is
Options- A. to guide motion of the piston rod and to prevent it from bending
- B. to transfer motion from the piston to the cross-head
- C. to convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment Discuss
Correct Answer: to convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment
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