Steam Boilers and Engines problems
- 1. The amount of water evaporated or steam produced in kg per kg of fuel burnt is termed as evaporative capacity of a boiler.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 2. The draught is the __________ of pressures above and below the fire grate.
Options- A. sum
- B. difference Discuss
Correct Answer: difference
- 3. In a double acting steam engine, the steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft.
Options- A. Yes
- B. No Discuss
Correct Answer: No
- 4. In a Tandem type compound engine, the high pressure and low pressure cylinders
Options- A. have common piston rod
- B. are set at 90°
- C. have separate piston rods
- D. are set in V - arrangement Discuss
Correct Answer: have common piston rod
- 5. Cornish boilers are multi-tubular boilers.
Options- A. True
- B. False Discuss
Correct Answer: False
- 6. The ratio of the clearance volume to the swept volume is called
Options- A. cut-off ratio
- B. expansion ratip
- C. clearance ratio
- D. none of these Discuss
Correct Answer: clearance ratio
- 7. The cut-off ratio is the reciprocal of expansion ratio,
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 8. The Locomotive boiler has
Options- A. 137 fire tubes and 44 superheated tubes
- B. 147 fire tubes and 34 superheated tubes
- C. 157 fire tubes and 24 superheated tubes
- D. 167 fire tubes and 14 superheated tubes Discuss
Correct Answer: 157 fire tubes and 24 superheated tubes
- 9. Throttle 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
Correct Answer: pressure of intake steam
- 10. In cross compounding, the cylinders are arranged
Options- A. side by side and each cylinder has common piston, connecting rod and crank
- B. side by side and each cylinder has separate piston, connecting rod and crank
- C. at 90° and each cylinder has common piston, connecting rod and crank
- D. at 90° and each cylinder has separate piston, connecting rod and crank Discuss
Correct Answer: side by side and each cylinder has separate piston, connecting rod and crank
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