Discussion
Home ‣ Mechanical Engineering ‣ Steam Boilers and Engines Comments
- Question
Lancashire boiler is used where working pressure and power required are
Options- A. low
- B. moderate
- C. high
- D. none of these
- Correct Answer
- moderate
- 1. Expansion ratio is the ratio of
Options- A. swept volume to the volume at cut-off
- B. clearance volume to the swept volume
- C. volume at cut-off to the swept volume
- D. swept volume to the clearance volume Discuss
- 2. The motion of a D-slide valve in a steam engine is simple harmonic.
Options- A. Yes
- B. No Discuss
- 3. The maximum steam pressure in a Locomotive boiler is limited to
Options- A. 0.18 MN/m2
- B. 1.8 MN/m2
- C. 18 MN/m2
- D. 180 MN/m2 Discuss
- 4. The mechanical draught produces more draught than natural draught.
Options- A. True
- B. False Discuss
- 5. In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the atmospheric pressure.
Options- A. equal to
- B. lower than
- C. higher than Discuss
- 6. A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as
Options- A. blow off cock
- B. fusible plug
- C. superheater
- D. stop valve Discuss
- 7. The amount of water evaporated or steam produced in kg per kg of fuel burnt is termed as evaporative capacity of a boiler.
Options- A. Agree
- B. Disagree Discuss
- 8. The draught is the __________ of pressures above and below the fire grate.
Options- A. sum
- B. difference Discuss
- 9. In a double acting steam engine, the steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft.
Options- A. Yes
- B. No Discuss
- 10. In a Tandem type compound engine, the high pressure and low pressure cylinders
Options- A. have common piston rod
- B. are set at 90°
- C. have separate piston rods
- D. are set in V - arrangement Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: swept volume to the volume at cut-off
Correct Answer: Yes
Correct Answer: 1.8 MN/m2
Correct Answer: True
Correct Answer: higher than
Correct Answer: stop valve
Correct Answer: Agree
Correct Answer: difference
Correct Answer: No
Correct Answer: have common piston rod
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