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- Question
The amount of water evaporated from feed water at __________ into dry and saturated steam at 100° C at normal atmospheric pressure is called equivalent evaporation from and at 100° C.
Options- A. 0°C
- B. 40°C
- C. 60°C
- D. 100°C
- Correct Answer
- 100°C
- 1. When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as
Options- A. internally fired boiler
- B. externally fired boiler
- C. natural circulation boiler
- D. forced circulation boiler Discuss
- 2. The capacity and working pressure.of a Cornish boiler is __________ as compared to Lancashire boiler.
Options- A. low
- B. high Discuss
- 3. A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly
Options- A. 150 kg/h
- B. 210 kg/h
- C. 280 kg/h
- D. 340 kg/h Discuss
- 4. A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called
Options- A. receiver type compound engine
- B. Tandem type compound engine
- C. Woolf type compound engine
- D. both (a) and (b) Discuss
- 5. The diameter of internal flue tubes of a Lancashire boiler is about __________ that of its shell.
Options- A. one-fourth
- B. one-third
- C. two-fifth
- D. one-half Discuss
- 6. Which of the following statement is wrong?
Options- A. The mechanical draught reduces the height of chimney.
- B. The natural draught reduces the fuel consumption.
- C. A balanced draught is a combination of induced and forced draught.
- D. all of the above Discuss
- 7. The number of water level indicators in a boiler are generally __________ in number.
Options- A. one
- B. two
- C. three
- D. four Discuss
- 8. In a La-mont boiler, there is a __________ circulation of water and steam.
Options- A. forced
- B. natural Discuss
- 9. 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
- 10. The factor of evaporation for all boilers is always
Options- A. equal to unity
- B. less than unity
- C. greater than unity Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: natural circulation boiler
Correct Answer: low
Correct Answer: 340 kg/h
Correct Answer: receiver type compound engine
Correct Answer: two-fifth
Correct Answer: The natural draught reduces the fuel consumption.
Correct Answer: two
Correct Answer: forced
Correct Answer: Second law of thermodynamics
Correct Answer: greater than unity
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