Engineering :: Heat Engines
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| 401. |
The ends of piston rod in steam engines are connected to |
| A. |
Connecting rod and crankshaft |
B. |
Connecting rod and cross-head |
| C. |
Crankshaft and cross-head |
D. |
Piston and cross-head |
| E. |
Piston and crankshaft |
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Answer: Option D
Explanation:
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| 402. |
The governor for steam turbine is driven by |
| A. |
Main shaft |
B. |
Separate motor |
| C. |
Belt drive |
D. |
Feed pump motor |
| E. |
None of the above |
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Answer: Option A
Explanation:
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| 403. |
A steam nozzle is said to be choked when |
| A. |
Throat gets clogged |
B. |
Steam flow through nozzle ceases |
| C. |
Pressure at throat is less than the exit pressure |
D. |
Pressure at throat is equal to steam supply pressure |
| E. |
Flow is at maximum value of critical exit pressure |
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Answer: Option C
Explanation:
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| 404. |
Shock effect in the nozzle generally occurs in |
| A. |
Converging section |
B. |
Throat |
| C. |
Diverging section |
D. |
Exit |
| E. |
Inlet |
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Answer: Option C
Explanation:
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| 405. |
How many kg of air will contain one kg of oxygen? |
Answer: Option B
Explanation:
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| 406. |
Which of the following engine uses two fuel simultaneously? |
| A. |
Multi-fuel engine |
B. |
Duel fuel engine |
| C. |
Wankle engine |
D. |
Free piston gas generator |
| E. |
All of the above |
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Answer: Option B
Explanation:
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| 407. |
A Wankel engine combines the advantages of |
| A. |
SI and CI engines |
B. |
Rotory and reciprocating engines |
| C. |
Air cooled and reciprocating engines |
D. |
Axial flow and centrifugal compression |
| E. |
Carburction and fuel injection |
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Answer: Option B
Explanation:
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| 408. |
In a four stroke petrol engine |
| A. |
Intake valve closes before TDC |
B. |
Intake valve closes after BDC |
| C. |
Exhaust valve closes before BDC |
D. |
Exhaust valve open before BDC |
| E. |
None of the above |
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Answer: Option B
Explanation:
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| 409. |
In an analysis report of a sample of coal the percentage of one of the constituents is specified as 3.5%. This constituent could be |
| A. |
Carbon |
B. |
Ash |
| C. |
Moisture |
D. |
Sulphur |
| E. |
Any of the above |
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Answer: Option D
Explanation:
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| 410. |
Which of the following is not a part of diesel engine? |
| A. |
Air filter |
B. |
Oil pump |
| C. |
Condenser |
D. |
Lubricating oil filter |
| E. |
Gudgeon pin |
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Answer: Option C
Explanation:
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