Steam Boilers and Engines problems
- 1. The governing of steam engines keep the engine speed constant according to the changing load conditions
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 2. Lancashire boiler is
Options- A. stationary fire tube boiler
- B. internally fired boiler
- C. horizontal boiler
- D. all of these Discuss
Correct Answer: all of these
- 3. A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is knwon as
Options- A. superheater
- B. air preheater
- C. economiser
- D. injector Discuss
Correct Answer: air preheater
- 4. The efficiency of the plant __________ with the mechanical draught.
Options- A. increases
- B. decreases
- C. remains constant Discuss
Correct Answer: increases
- 5. The evaporative capacity of a boiler is defined as the evaporation of 15.653 kg of water per hour from and at 100° C.
Options- A. Yes
- B. No Discuss
Correct Answer: No
- 6. The chimney draught varies with
Options- A. climatic conditions
- B. temperature of furnace gases
- C. height of chimney
- D. all of these Discuss
Correct Answer: all of these
- 7. The ratio of the __________ to the volume at cut-off is called expansion ratio.
Options- A. swept volume
- B. clearance volume Discuss
Correct Answer: swept volume
- 8. In water tube boilers, the water passes through the tubes which are surrounded by flames and hot gases.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 9. The maximum heat loss is a boiler occurs due to
Options- A. moisture in fuel
- B. dry flue gases
- C. steam formation
- D. unburnt carbon Discuss
Correct Answer: dry flue gases
- 10. A Tandem type compound engine requires a larger flywheel.
Options- A. True
- B. False Discuss
Correct Answer: True
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