Steam Boilers and Engines - Section 1 (2)

Directions to Solve

Steam Boilers and Engines - Section 1

9.

A single acting steam engine produces __________ power than that of double acting steam engine.

A.	equal
B.	half
C.	double
D.	four times

Answer: Option B

Explanation:

No answer description available for this question.

10.

The diameter of Cornish boiler varies from

A.	0.5 to 1 m
B.	1 to 2 m
C.	1.25 to 2.5 m
D.	2 to 3 m

Answer: Option B

Explanation:

No answer description available for this question.

11.

The average operating pressure of Benson boiler is

A.	100 bar
B.	150 bar
C.	200 bar
D.	250 bar

Answer: Option D

Explanation:

No answer description available for this question.

12.

The aim of a compound steam engine is

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

Answer: Option D

Explanation:

No answer description available for this question.

13.

A double acting steam engine with a cylinder diameter of 190 mm and a stroke of 300 mm has a cut-off of 0.35. The expansion ratio for this engine is nearly

A.	1.05
B.	2.86
C.	6.65
D.	10.05

Answer: Option B

Explanation:

No answer description available for this question.

14.

The fire tubes in a Cochran boiler are

A.	horizontal
B.	vertical
C.	inclined

Answer: Option A

Explanation:

No answer description available for this question.

15.

The function of a safety valve is

A.	to blow off steam when the pressure of steam inside the boiler exceeds the working pressure
B.	to indicate the water level inside the boiler to an observer
C.	to measure pressure of steam inside the steam boiler
D.	none of the above

Answer: Option A

Explanation:

No answer description available for this question.

16.

When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as

A.	internally fired boiler
B.	externally fired boiler
C.	natural circulation boiler
D.	forced circulation boiler

Answer: Option D

Explanation:

No answer description available for this question.

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