Steam Boilers and Engines problems
- 1. A single ended Scotch marine steam boiler may have one to four furnaces which enter from front end of the boiler.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 2. The function of a D-slide valve is to exhaust steam from the cylinder at proper moment.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 3. The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks
Options- A. 180° to each other
- B. 90° to each other
- C. 0° to each other
- D. none of these Discuss
Correct Answer: 90° to each other
- 4. 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
Correct Answer: higher than
- 5. The mechanical draught produces more draught than natural draught.
Options- A. True
- B. False Discuss
Correct Answer: True
- 6. 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
Correct Answer: 1.8 MN/m2
- 7. The motion of a D-slide valve in a steam engine is simple harmonic.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 8. 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
Correct Answer: swept volume to the volume at cut-off
- 9. Lancashire boiler is used where working pressure and power required are
Options- A. low
- B. moderate
- C. high
- D. none of these Discuss
Correct Answer: moderate
- 10. 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
Correct Answer: stop valve
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