Discussion
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- Question
The function of a superheater is to heat the feed water by utilising the heat in the exhaust flue gases before leaving through the chimney.
Options- A. Yes
- B. No
- Correct Answer
- No
- 1. When the expansion of steam is carried out in a single cylinder and then exhausted into the atmosphere or a condenser, the engine is said to be a simple steam engine.
Options- A. Correct
- B. Incorrect Discuss
- 2. In a compound steam engine, the temperature range per cylinder is reduced, with corresponding reduction in the condensation.
Options- A. Correct
- B. Incorrect Discuss
- 3. The water tubes in a Babcock and Wilcox boiler are
Options- A. vertical
- B. horizontal
- C. inclined Discuss
- 4. The equivalent evaporation is defined as
Options- A. the ratio of heat actually used in producing the steam to the heat liberated in the furnace
- B. the amount of water evaporated or steam produced in kg per kg of fuel burnt
- C. the amount of water evaporated from and at 100° C into dry and saturated steam
- D. the evaporation of 15.653 kg of water per hour from and at 100° C Discuss
- 5. The draught produced by a steam jet issuing from a nozzle placed in the chimney is called
Options- A. induced steam jet draught
- B. chimney draught
- C. forced steam jet draught
- D. none of these Discuss
- 6. The high steam and low water safety valve is used to blow off steam when the
Options- A. steam pressure exceeds the working pressure
- B. water level in the boiler becomes too low
- C. both (a) and (b)
- D. none of the above Discuss
- 7. Willian's law holds good for throttle-governed engine, but not for cut-off governed engine.
Options- A. True
- B. False Discuss
- 8. Willian's line follows the law (where b = A constant representing the shape of the Willian's line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)
Options- A. I.P. = a x m + b
- B. m = a + b x I.P.
- C. I.P. = b x m + a
- D. m = b/I.P. - a Discuss
- 9. The water tube boilers produce steam at a __________ pressure than that of fire tube boilers.
Options- A. lower
- B. higher Discuss
- 10. For the same diameter and thickness of tube, a water tube boiler has __________ heating surface as compared to fire tube boiler.
Options- A. more
- B. less
- C. equal Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: Correct
Correct Answer: Correct
Correct Answer: inclined
Correct Answer: the amount of water evaporated from and at 100° C into dry and saturated steam
Correct Answer: induced steam jet draught
Correct Answer: both (a) and (b)
Correct Answer: True
Correct Answer: m = a + b x I.P.
Correct Answer: higher
Correct Answer: more
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