Discussion
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- Question
The ratio of the actual vacuum to the ideal vacuum in a condenser is called
Options- A. condenser efficiency
- B. vacuum efficiency
- C. nozzle efficiency
- D. boiler efficiency
- Correct Answer
- vacuum efficiency
- 1. 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
- 2. 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
- 3. The diameter of superheated tubes in a locomotive boiler is
Options- A. 13 mm
- B. 31 mm
- C. 130 mm
- D. 230 mm Discuss
- 4. 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
- 5. 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
- 6. The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height ot the chimney in metres, and T1 = Absolute temperature of air outside the chimney in K)
Options- A.
- B.
- C.
- D.
Discuss
- 7. A receiver type compound engine, requires a lighter flywheel.
Options- A. Yes
- B. No Discuss
- 8. The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called
Options- A. safety valve
- B. water level indicator
- C. pressure gauge
- D. fusible plug Discuss
- 9. The high steam and low water safety valve is not used in
Options- A. Cochran boiler
- B. Cornish boiler
- C. Lancashire boiler
- D. Locomotive boiler Discuss
- 10. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called
Options- A. blow off cock
- B. stop valve
- C. superheater
- D. none of these Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: twice
Correct Answer: throttle governing
Correct Answer: 130 mm
Correct Answer: 1.7 MN/m2
Correct Answer: Lansashire boiler
Correct Answer:
Correct Answer: Yes
Correct Answer: safety valve
Correct Answer: Locomotive boiler
Correct Answer: none of these
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