Discussion
Home ‣ Mechanical Engineering ‣ Steam Boilers and Engines Comments
- Question
The diagram factor is the ratio of the
Options- A. area of the actual indicator diagram to the area of theoretical indicator diagram
- B. actual workdone per stroke to the theoretical workdone per stroke
- C. actual mean effective pressure to the theoretical mean effective pressure
- D. any one of the above
- Correct Answer
- any one of the above
- 1. The diameter of a cylindrical shell of a Scotch marine boiler varies from
Options- A. 1.5 to 2 m
- B. 2.5 to 3.5 m
- C. 3.5 to 4.5 m
- D. none of these Discuss
- 2. Which of the following is a water tube boiler?
Options- A. Lancashire boiler
- B. Babcock and Wilcox boiler
- C. Locomotive boiler
- D. Cochran boiler Discuss
- 3. The heat balance sheet for the boiler shows the
Options- A. complete account of heat supplied by 1 kg of dry fuel and the heat consumed
- B. moisture present in the fuel
- C. steam formed by combustion of hygrogen per kg of fuel
- D. all of the above Discuss
- 4. When steam after doing work in the cylinder passes into a condenser, the engine is said to be a
Options- A. slow speed engine
- B. vertical steam engine
- C. condensing steam engine
- D. non-condensing steam engine Discuss
- 5. The theoretical indicator diagram of a simple steam engine is based upon the assumption that
Options- A. there is no pressure drop due to condensation
- B. steam is admitted at boiler pressure and exhausted at condenser pressure
- C. the expansion (or compression) of the steam is hyperbolic
- D. all of the above Discuss
- 6. The fire tubes in a Cochran boiler usually have __________ diameter.
Options- A. 6.25 mm
- B. 62.5 mm
- C. 72.5 mm
- D. 92.5 mm Discuss
- 7. In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the condenser pressure.
Options- A. equal to
- B. lower than
- C. higher than Discuss
- 8. A compound steam engine in which piston rods of high pressure and low pressure cylinders ' are attached to two different cranks set at 180° 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
- 9. The actual power supplied by the engine crankshaft is called
Options- A. indicated power
- B. brake power
- C. frictional power
- D. none of these Discuss
- 10. The draught produced by a steam jet issuing from a nozzle placed in the chimney is called
Options- A. induced steam jet draught
- B. chimney draught
- C. forced steam jet draught
- D. none of these Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: 2.5 to 3.5 m
Correct Answer: Babcock and Wilcox boiler
Correct Answer: complete account of heat supplied by 1 kg of dry fuel and the heat consumed
Correct Answer: condensing steam engine
Correct Answer: all of the above
Correct Answer: 62.5 mm
Correct Answer: higher than
Correct Answer: Woolf type compound engine
Correct Answer: brake power
Correct Answer: induced steam jet draught
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