Discussion
Home ‣ Mechanical Engineering ‣ Steam Boilers and Engines Comments
- Question
Steam engines are called external combustion engines.
Options- A. Yes
- B. No
- Correct Answer
- Yes
- 1. Benson boiler requires
Options- A. no drum
- B. one drum
- C. two drums
- D. three drums Discuss
- 2. The function of a governor is to keep the engine speed uniform at all load conditions.
Options- A. Correct
- B. Incorrect Discuss
- 3. An economiser is used to increase the temperature of saturated steam without raising its pressure.
Options- A. Correct
- B. Incorrect Discuss
- 4. The velocity of flue gases (V) through the chimney under a static draught of(H') metres is given by
Options- A. V = 2g H'
- B. V = 2g/H'
- C. V = H'/2g
- D. V = 2gH' Discuss
- 5. Locomotive boiler is a
Options- A. single tube, horizontal, internally fired and stationary boiler
- B. single tube, vertical, externally fired and stationary boiler
- C. multitubular, horizontal, internally fired and mobile boiler
- D. multitubular, horizontal, externally fired and stationary boiler Discuss
- 6. Besides mean effective pressure, the data required to determine the indicated power of an engine include
Options- A. piston diameter, length of stroke and calorific value of fuel
- B. piston diameter, specific fuel consumption and Calorific value of fuel
- C. piston diameter, length of stroke and speed of rotation
- D. specific fuel consumption, speed of rotation and torque Discuss
- 7. An economiser is installed in a boiler primarily to
Options- A. superheat the steam
- B. reduce fuel consumption
- C. increase steam pressure
- D. all of these Discuss
- 8. For maximum discharge through a chimney, the temperature of flue gases inside the chimney should the slightly more than the atmospheric temperature.
Options- A. Correct
- B. Incorrect Discuss
- 9. The amount of water evaporated or steam produced in kg per kg of fuel burnt is known as power of a boiler.
Options- A. True
- B. False Discuss
- 10. Cut-off ratio is the ratio of
Options- A. swept volume to the volume at cut-off
- B. volume at cut-off to the clearance volume
- C. volume at cut-off to the swept volume
- D. clearance volume to the volume at cut-off Discuss
Steam Boilers and Engines problems
Search Results
Correct Answer: no drum
Correct Answer: Correct
Correct Answer: Incorrect
Correct Answer: V = 2g H'
Correct Answer: multitubular, horizontal, internally fired and mobile boiler
Correct Answer: piston diameter, length of stroke and speed of rotation
Correct Answer: reduce fuel consumption
Correct Answer: Correct
Correct Answer: True
Correct Answer: volume at cut-off to the swept volume
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