Discussion
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- Question
The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive and bond, is called
Options- A. truing
- B. dressing
- C. facing
- D. clearing
- Correct Answer
- truing
- 1. Which of the following boiler is best suited to meet the fluctuating demand of steam?
Options- A. Locomotive boiler
- B. Lancashire boiler
- C. Cornish boiler
- D. Babcock and Wilcox boiler Discuss
- 2. Which of the following statement is wrong?
Options- A. Locomotive boiler is a water tube boiler.
- B. Water tube boilers are internally fired.
- C. La-mont boiler is a low pressure water tube boiler.
- D. all of the above Discuss
- 3. Which of the following statement is correct?
Options- A. A fire tube boiler occupies less space than a water tube boiler, for a given power.
- B. Steam at a high pressure and in large quantities can be produced with a simple vertical boiler.
- C. A simple vertical boiler has one fire tube.
- D. all of the above Discuss
- 4. 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
- 5. Which of the following statement is wrong?
Options- A. The power transmitted by V-belts is less than flat belts for the same coefficient of friction, arc of contact and allowable tension in the belts
- B. The V-belt drive is used with large centre distance
- C. The V-belt may be operated in either direction with tight side of the belt at the top or bottom
- D. The ratio of driving tensions in V-belt drive is more than flat belt drives Discuss
- 6. Which of the following indicates a multigrade oil?
Options- A. SAE 30
- B. API SF
- C. SAE 20 W-50
- D. API 50 Discuss
- 7. The injection pressure in a diesel engine is about
Options- A. 10 bar
- B. 100 bar
- C. 150 bar
- D. 500 bar Discuss
- 8. The discharge is __________ at critical pressure.
Options- A. zero
- B. minimum
- C. maximum Discuss
- 9. The heating and expanding of a gas is called thermodynamic system.
Options- A. Yes
- B. No Discuss
- 10. The workdone in a free expansion process is zero.
Options- A. True
- B. False Discuss
More questions
Correct Answer: Locomotive boiler
Correct Answer: all of the above
Correct Answer: A simple vertical boiler has one fire tube.
Correct Answer: all of the above
Correct Answer: The V-belt drive is used with large centre distance
Correct Answer: SAE 20 W-50
Correct Answer: 100 bar
Correct Answer: maximum
Correct Answer: No
Correct Answer: True
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