Steam Boilers and Engines - Section 1 (3)

Directions to Solve

Steam Boilers and Engines - Section 1

17.

The power of a boiler may be defined as

A.	the ratio of heat actually used in producing the steam to the heat liberated in the furnace
B.	the amount of water evaporated or steam produced in kg per kg of fuel burnt
C.	the amount of water evaporated from and at 100° C into dry and saturated steam
D.	the evaporation of 15.653 kg of water per hour from and at 100° C

Answer: Option B

Explanation:

No answer description available for this question.

18.

In a reciprocating steam engine, the heat energy in the steam is converted into mechanical work by the to and fro motion of the piston.

A.	Agree
B.	Disagree

Answer: Option A

Explanation:

No answer description available for this question.

19.

The fire tubes in a Scotch marine boiler are

A.	horizontal
B.	vertical
C.	inclined

Answer: Option A

Explanation:

No answer description available for this question.

20.

The shell diameter of a Locomotive boiler is

A.	1 m
B.	1.5 m
C.	2 m
D.	2.5 m

Answer: Option B

Explanation:

No answer description available for this question.

21.

In a uniflow engine

A.	steam enters and exhausts through the same port
B.	steam enters at one end and exhausts at the centre
C.	steam enters at the centre and exhausts at the other end
D.	none of the above

Answer: Option B

Explanation:

No answer description available for this question.

22.

The effect of wire drawing is to decrease the area of indicator diagram and thus work done by the engine is reduced.

A.	Agree
B.	Disagree

Answer: Option A

Explanation:

No answer description available for this question.

23.

The length of shell of a Locomotive boiler is

A.	1 m
B.	2 m
C.	3 m
D.	4 m

Answer: Option D

Explanation:

No answer description available for this question.

24.

An air preheater is installed

A.	before the economiser
B.	before the superheater
C.	between the economiser and chimney
D.	none of these

Answer: Option C

Explanation:

No answer description available for this question.

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