Discussion
Home ‣ Mechanical Engineering ‣ Steam Boilers and Engines Comments
- Question
The draught may be produced by a
Options- A. mechanical fan
- B. chimney
- C. a steam jet
- D. all of these
- Correct Answer
- all of these
- 1. The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as
Options- A. feedpump
- B. injector
- C. feed check valve
- D. pressure gauge Discuss
- 2. Combustuion of fuel takes place __________ the engine cylinder of a steam engine.
Options- A. outside
- B. inside Discuss
- 3. A device used to heat feed water by utilising the heat in me exhaust flue gases before leaving through the chimny, is known as
Options- A. economiser
- B. fusible plug
- C. superheater
- D. stop valve Discuss
- 4. The factor of evaporation for all boilers is always
Options- A. equal to unity
- B. less than unity
- C. greater than unity Discuss
- 5. All steam engines work on
Options- A. Zeroth law of thermodynamics
- B. First law of thermodynamics
- C. Second law of thermodynamics
- D. none of these Discuss
- 6. The clearance in the engine cylinder has no effect on the steam consumption.
Options- A. True
- B. False Discuss
- 7. The fire tubes in a Locomotive boiler has __________ diameter.
Options- A. 4.75 mm
- B. 5.47 mm
- C. 7.45 mm
- D. 47.5 mm Discuss
- 8. The high pressure and low pressure cylinders in a Woolf 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
- 9. The ratio of heat equivalent to brake power to the energy supplied in steam is known as
Options- A. mechanical efficiency
- B. overall efficiency
- C. indicated thermal efficiency
- D. brake thermal efficiency Discuss
- 10. A condenser in a steam power plant
Options- A. increases expansion ratio of steam
- B. reduces back pressure of steam
- C. reduces temperature of exhaust steam
- D. all of these Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: feedpump
Correct Answer: outside
Correct Answer: economiser
Correct Answer: greater than unity
Correct Answer: Second law of thermodynamics
Correct Answer: False
Correct Answer: 47.5 mm
Correct Answer: 180° to each other
Correct Answer: brake thermal efficiency
Correct Answer: all of these
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