Engineering :: Heat Engines
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| 331. |
An economiser is installed in a boiler plant primarily to |
| A. |
Superheat the steam |
B. |
Increase steam pressure |
| C. |
Increase rate of steam evaporation |
D. |
Reduce fuel consumption |
| E. |
Purify boiler feed water |
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Answer: Option D
Explanation:
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| 332. |
Injector is used to |
| A. |
Inject secondary air in boiler furnace |
B. |
Inject steam into steam engine cylinder |
| C. |
Inject exhaust gases into chimney |
D. |
Inject water boiler |
| E. |
Inject wet steam into superheater |
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Answer: Option D
Explanation:
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| 333. |
Gusset stays are provided in |
| A. |
Steam condensers |
B. |
Boilers |
| C. |
Steam turbines |
D. |
Steam engines |
| E. |
Chimney |
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Answer: Option B
Explanation:
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| 334. |
Which of the following is an accessory for a boiler? |
| A. |
Feed check valve |
B. |
Feed pump |
| C. |
Stop valve |
D. |
Safety valve |
| E. |
Blow off cock |
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Answer: Option B
Explanation:
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| 335. |
Air preheater in a boiler will be invariably located between |
| A. |
Boiler furnace and chimney |
B. |
Economiser and feed pump |
| C. |
Forced draft fan and furnace |
D. |
Water treatment plant and furnace |
| E. |
Condenser and feed water pump |
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Answer: Option C
Explanation:
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| 336. |
High steam and low water safety valve is not used on which of the following boiler? |
| A. |
Locomotive boiler |
B. |
Cornish boiler |
| C. |
Cochran boiler |
D. |
Lancashire boiler |
| E. |
All of the above |
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Answer: Option A
Explanation:
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| 337. |
In a Lancashire boiler, the economiser is located |
| A. |
Before air preheater |
B. |
After air preheater |
| C. |
Between feed pump and boiler |
D. |
At any of the above locations |
| E. |
None of the above locations |
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Answer: Option A
Explanation:
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| 338. |
Forced circulation of water does not take place in which of the following boiler? |
| A. |
Benson boiler |
B. |
Lancashire boiler |
| C. |
La Mont boiler |
D. |
Babcock and Wilcox boiler |
| E. |
Velox boiler |
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Answer: Option B
Explanation:
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| 339. |
In case of glass tube type water level indicator for a boiler |
| A. |
Both ends of the tube are connected to water space |
B. |
One end of the tube is connected to water space and the other is open to atmosphere |
| C. |
One end of the tube is connected to water space and the other is connected to steam space in the drum |
D. |
One end of the tube is connected to water space and the other end is connected to superheated steam outlet from superheater |
| E. |
One end of the tube is connected to water space and the other end connected to chimney |
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Answer: Option C
Explanation:
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| 340. |
The turbidity in boiler feed water causes |
| A. |
Sludge |
B. |
Scale |
| C. |
Corrosion |
D. |
Embrittlement |
| E. |
None of the above |
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Answer: Option A
Explanation:
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