Steam Boilers and Engines problems
- 1. The average operating pressure of Benson boiler is
Options- A. 100 bar
- B. 150 bar
- C. 200 bar
- D. 250 bar Discuss
Correct Answer: 250 bar
- 2. A draught produced by a chimney due to the difference of densities between the hot gases inside the chimney and cold atmospheric air outside it, is called natural draught.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 3. The aim of a compound steam engine is
Options- A. to reduce the ratio of expansion in each cylinder
- B. to reduce the length of stroke
- C. to reduce the temperature range in each cylinder
- D. all of the above Discuss
Correct Answer: all of the above
- 4. Loeffler boiler is a water tube boiler using a forced circulation of water.
Options- A. True
- B. False Discuss
Correct Answer: True
- 5. The function of a crosshead is to guide motion of the __________ and to prevent it from bending.
Options- A. piston rod
- B. connecting rod
- C. eccentric rod
- D. valve rod Discuss
Correct Answer: piston rod
- 6. The function of a piston rod is
Options- A. to guide motion of the piston rod and to prevent it from bending
- B. to transfer motion from the piston to the cross head
- C. to convert heat energy of the steam into mechanical work
- D. to exhust steam from the cylinder at proper moment Discuss
Correct Answer: to transfer motion from the piston to the cross head
- 7. The length of shell of a Locomotive boiler is
Options- A. 1 m
- B. 2 m
- C. 3 m
- D. 4 m Discuss
Correct Answer: 4 m
- 8. Which of the following statement is correct?
Options- A. Lancashire boiler is a fire tube boiler.
- B. Fire tube boilers are internally fired.
- C. Babcock and Wilcox boiler is a water tube boiler.
- D. all of the above Discuss
Correct Answer: all of the above
- 9. The effect of wire drawing is to decrease the area of indicator diagram and thus work done by the engine is reduced.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 10. In a reciprocating steam engine, the heat energy in the steam is converted into mechanical work by the to and fro motion of the piston.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.