Discussion
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- Question
Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)
Options- A.
- B.
- C. I.P.
- D. (I.P.)2
- Correct Answer
- I.P.
- 1. The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as
Options- A. equivalent evaporation
- B. factor of evaporation
- C. boiler efficiency
- D. power of a boiler Discuss
- 2. The cylindrical shell of a Lancashire boiler has diameter from
Options- A. 1 to 2 m
- B. 1.25 to 2.25 m
- C. 1.5 to 2.5 m
- D. 1.75 to 2.75 m Discuss
- 3. Babcock and Wilcox boiler is a stationary type of water tube boiler.
Options- A. Correct
- B. Incorrect Discuss
- 4. Lancashire boiler is a stationary fire tube boiler.
Options- A. Agree
- B. Disagree Discuss
- 5. Blow off cock in a boiler is used to
Options- A. control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required
- B. empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler
- C. put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit
- D. increase the temperature of saturated steam without raising its pressure Discuss
- 6. Which of the following boiler works on a forced circulation of water?
Options- A. La-mont boiler
- B. Benson boiler
- C. Loeffler boiler
- D. all of these Discuss
- 7. In a single acting steam engine
Options- A. the steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
- B. the steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft
- C. the steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft
- D. the steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft. Discuss
- 8. The diameter of internal flue tubes of a Lancashire boiler is about __________ that of its shell.
Options- A. one-fourth
- B. one-third
- C. two-fifth
- D. one-half Discuss
- 9. A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called
Options- A. receiver type compound engine
- B. Tandem type compound engine
- C. Woolf type compound engine
- D. both (a) and (b) Discuss
- 10. A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly
Options- A. 150 kg/h
- B. 210 kg/h
- C. 280 kg/h
- D. 340 kg/h Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: boiler efficiency
Correct Answer: 1.75 to 2.75 m
Correct Answer: Correct
Correct Answer: Agree
Correct Answer: empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler
Correct Answer: all of these
Correct Answer: the steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
Correct Answer: two-fifth
Correct Answer: receiver type compound engine
Correct Answer: 340 kg/h
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