Discussion
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- Question
The average value of diagram factor lies between
Options- A. 0.2 to 0.5
- B. 0.5 to 0.65
- C. 0.65 to 0.9
- D. 0.8 to 1.2
- Correct Answer
- 0.65 to 0.9
- 1. By compounding the expansion of steam in two or more cylinders, the ratio of expansion
Options- A. does not change
- B. increases
- C. decreases Discuss
- 2. The amount of water evaporated in kg per kg of fuel burnt is called
Options- A. evaporative capacity of a boiler
- B. equivalent evaporation from and at 100° C
- C. boiler efficiency
- D. none of these Discuss
- 3. In forced circulation steam boilers, the force is applied
Options- A. to draw water
- B. to circulate water
- C. to drain off the water
- D. all of these Discuss
- 4. Which of the following are boiler accessories?
Options- A. economiser
- B. superheater
- C. both (a) and (b)
- D. none of these Discuss
- 5. The length of Lancashire boiler varies from
Options- A. 5 to 6 m
- B. 6 to 7 m
- C. 7.25 to 9 m
- D. 9 to 10 m Discuss
- 6. Which of the following is a fire tube boiler?
Options- A. Lansashire boiler
- B. Babcock and Wilcox boiler
- C. Yarrow boiler
- D. none of these Discuss
- 7. Fire tube boilers are limited to a maximum working pressure of
Options- A. 0.17 MN/m2
- B. 1.7 MN/m2
- C. 17 MN/m2
- D. 170 MN/m2 Discuss
- 8. The diameter of superheated tubes in a locomotive boiler is
Options- A. 13 mm
- B. 31 mm
- C. 130 mm
- D. 230 mm Discuss
- 9. When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as
Options- A. throttle governing
- B. cut-off governing
- C. by-pass governing
- D. none of these Discuss
- 10. For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is __________ the piston speed of single acting steam engine.
Options- A. equal to
- B. twice
- C. three times
- D. four times Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: decreases
Correct Answer: evaporative capacity of a boiler
Correct Answer: to circulate water
Correct Answer: both (a) and (b)
Correct Answer: 7.25 to 9 m
Correct Answer: Lansashire boiler
Correct Answer: 1.7 MN/m2
Correct Answer: 130 mm
Correct Answer: throttle governing
Correct Answer: twice
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