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- Question
Which of the following boiler is best suited to meet the fluctuating demand of steam?
Options- A. Locomotive boiler
- B. Lancashire boiler
- C. Cornish boiler
- D. Babcock and Wilcox boiler
- Correct Answer
- Locomotive boiler
- 1. Cut-off governing of steam engines is a method of controlling the engine output by varying
Options- A. volume of intake steam
- B. pressure of intake steam
- C. temperature of intake steam
- D. all of these Discuss
- 2. In a uniflow engine
Options- A. steam enters and exhausts through the same port
- B. steam enters at one end and exhausts at the centre
- C. steam enters at the centre and exhausts at the other end
- D. none of the above Discuss
- 3. The power of a boiler may be defined as
Options- A. the ratio of heat actually used in producing the steam to the heat liberated in the furnace
- B. the amount of water evaporated or steam produced in kg per kg of fuel burnt
- C. the amount of water evaporated from and at 100° C into dry and saturated steam
- D. the evaporation of 15.653 kg of water per hour from and at 100° C Discuss
- 4. A safety valve mainly used with locomotive and marine boilers is
Options- A. lever safety valve
- B. dead weight safety valve
- C. high steam and low water safety valve
- D. spring loaded safety valve Discuss
- 5. The pressure of steam in the engine cylinder at the beginning of the stroke is __________ the boiler pressure.
Options- A. equal to
- B. less than
- C. higher than Discuss
- 6. A single acting steam engine produces __________ power than that of double acting steam engine.
Options- A. equal
- B. half
- C. double
- D. four times Discuss
- 7. When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a
Options- A. slow speed engine
- B. medium speed steam engine
- C. high speed steam engine
- D. none of these Discuss
- 8. The function of a safety valve is
Options- A. to blow off steam when the pressure of steam inside the boiler exceeds the working pressure
- B. to indicate the water level inside the boiler to an observer
- C. to measure pressure of steam inside the steam boiler
- D. none of the above Discuss
- 9. Which of the following statement is wrong?
Options- A. The factor of evaporation for all boilers is always greater than unity.
- B. The amount of water evaporated in kg per kg of fuel burnt is called equivalent evaporation from and at 100° C.
- C. The ratio of heat actually used in producing the steam to the heat liberated in the furnace is called boiler efficiency.
- D. none of the above Discuss
- 10. Which of the following statement is correct for a compound steam engine?
Options- A. The cost of the engine, for the same power and economy, is more than that of a simple steam engine.
- B. The forces in the working parts are increased as the forces are distributed over more parts.
- C. The ratio of expansion is reduced, thus reducing the length of stroke.
- D. The temperature range per cylinder is increased, with corresponding increase in condensation. Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: volume of intake steam
Correct Answer: steam enters at one end and exhausts at the centre
Correct Answer: the amount of water evaporated or steam produced in kg per kg of fuel burnt
Correct Answer: spring loaded safety valve
Correct Answer: less than
Correct Answer: half
Correct Answer: medium speed steam engine
Correct Answer: to blow off steam when the pressure of steam inside the boiler exceeds the working pressure
Correct Answer: none of the above
Correct Answer: The ratio of expansion is reduced, thus reducing the length of stroke.
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