Mechanical Engineering - Steam Boilers and Engines

1. 

The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having cranks

A. 180° to each other
B. 90° to each other
C. 0° to each other
D. none of these

Answer: Option A

Explanation:

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2. 

In a single acting steam engine

A. the steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
B. the steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft
C. the steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft
D. the steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft.

Answer: Option A

Explanation:

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3. 

The cylindrical shell of a Lancashire boiler has diameter from

A. 1 to 2 m
B. 1.25 to 2.25 m
C. 1.5 to 2.5 m
D. 1.75 to 2.75 m

Answer: Option D

Explanation:

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4. 

Which of the following boiler works on a forced circulation of water?

A. La-mont boiler
B. Benson boiler
C. Loeffler boiler
D. all of these

Answer: Option D

Explanation:

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5. 

The clearance in the engine cylinder has no effect on the steam consumption.

A. True
B. False

Answer: Option B

Explanation:

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