Steam Boilers and Engines problems
- 1. The water tubes in a Babcock and Wilcox boiler are
Options- A. vertical
- B. horizontal
- C. inclined Discuss
Correct Answer: inclined
- 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
Correct Answer: Correct
- 3. 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
Correct Answer: Correct
- 4. 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 Discuss
Correct Answer: No
- 5. 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
Correct Answer: both (a) and (b)
- 6. Willian's law holds good for throttle-governed engine, but not for cut-off governed engine.
Options- A. True
- B. False Discuss
Correct Answer: True
- 7. 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
Correct Answer: m = a + b x I.P.
- 8. The water tube boilers produce steam at a __________ pressure than that of fire tube boilers.
Options- A. lower
- B. higher Discuss
Correct Answer: higher
- 9. 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
Correct Answer: more
- 10. The missing quantity is mainly due to cylinder condensation and a small amount of steam leakage past the valves and piston.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
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