Discussion
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- Question
The function of a valve rod is
Options- A. to provide reciprocating motion to the slide valve
- B. to convert reciprocating motion of the piston into rotary motion of the crank
- C. to convert rotary motion of the crankshaft into to and fro motion of the valve rod
- D. to provide simple harmonic motion to the D-slide valve
- Correct Answer
- to provide simple harmonic motion to the D-slide valve
- 1. The working pressure range for a La-Mont boiler is
Options- A. 0.5 to 10 MN/m2
- B. 1 to 15 MN/m2
- C. 2.5 to 15 MN/m2
- D. 3.5 to 20 MN/m2 Discuss
- 2. In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of
Options- A. 10 atmospheres
- B. 20 atmospheres
- C. 30 atmospheres
- D. 40 atmospheres Discuss
- 3. In a boiler, the heat is lost
Options- A. to dry flue gases
- B. in moisture present in the fuel
- C. to steam formed by combustion of hydrogen per kg of fuel
- D. all of the above Discuss
- 4. A water level indicator is a device to indicate the exact water level in the boiler at any instant.
Options- A. True
- B. False Discuss
- 5. The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
Options- A. condenser efficiency
- B. vacuum efficiency
- C. nozzle efficiency
- D. boiler efficiency Discuss
- 6. The function of an eccentric rod is
Options- A. to provide reciprocating motion to the slide valve
- B. to convert reciprocating motion of the piston into rotary motion of the crank
- C. to convert rotary motion of the crankshaft into to and fro motion of the valve rod
- D. to provide simple harmonic motion to the D-slide valve Discuss
- 7. Which of the following compound steam engine requires a smaller flywheel?
Options- A. Receiver type
- B. Tandem type
- C. Woolf type
- D. all of these Discuss
- 8. In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as
Options- A. 50° C and normal atmospheric pressure
- B. 50° C and 1.1 bar pressure
- C. 100° C and normal atmospheric pressure
- D. 100° C and 1.1 bar pressure Discuss
- 9. The hardness of steel depends upon the
Options- A. amount of cementite it contains
- B. amount of carbon it contains
- C. contents of alloying elements
- D. method of manufacture of steel Discuss
- 10. When a low carbon steel is heated upto upper critical temperature
Options- A. there is no change in grain size
- B. the average grain size is a minimum
- C. the grain size increases very rapidly
- D. the grain size first increases and then decreases very rapidly Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: 3.5 to 20 MN/m2
Correct Answer: 20 atmospheres
Correct Answer: all of the above
Correct Answer: True
Correct Answer: condenser efficiency
Correct Answer: to convert rotary motion of the crankshaft into to and fro motion of the valve rod
Correct Answer: Receiver type
Correct Answer: 100° C and normal atmospheric pressure
Correct Answer: amount of carbon it contains
Correct Answer: the average grain size is a minimum
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