Discussion
Home ‣ Mechanical Engineering ‣ Steam Boilers and Engines Comments
- Question
The rate of flow of steam is __________ in case of fire tube boilers.
Options- A. less
- B. more
- Correct Answer
- less
- 1. In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is __________ the lowpressure cylinder.
Options- A. equal to
- B. less than
- C. more than Discuss
- 2. 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
- 3. 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
- 4. 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
- 5. 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
- 6. A condenser where circulating water flows through tubes which are surrounded by steam, in known as
Options- A. surface condenser
- B. jet condenser
- C. barometric condenser
- D. evaporative condenser Discuss
- 7. The fittings mounted on the boiler for its proper and safe functioning is a
Options- A. water level indicatior
- B. pressure gauge
- C. safety valve
- D. all of these Discuss
- 8. The ratio of brake power to the indicated power is known as
Options- A. mechanical efficiency
- B. overall efficiency
- C. indicated thermal efficiency
- D. brake thermal efficiency Discuss
- 9. Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?
Options- A. Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler.
- B. Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler.
- C. Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes.
- D. Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube. Discuss
- 10. An air preheater
Options- A. increases evaporative capacity of the boiler
- B. increases the efficiency of the boiler
- C. enables low grade fuel to be burnt
- D. all of the above Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: less than
Correct Answer: all of these
Correct Answer: brake thermal efficiency
Correct Answer: 180° to each other
Correct Answer: 47.5 mm
Correct Answer: surface condenser
Correct Answer: all of these
Correct Answer: mechanical efficiency
Correct Answer: Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes.
Correct Answer: all of the above
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