Steam Boilers and Engines MCQ with Answers

141) Which of the following is required for a steam condensing plant ?

Answer is:

all of these

142) The missing quantity is mainly due to cylinder condensation and a small amount of steam leakage past the valves and piston.

Answer is:

Agree

143) There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called

Answer is:

cushion steam

144) The ratio of the volume at cut-off to the swept volume is called

Answer is:

cut-off ratio

Explanation:

The ratio of clearance volume to the swept volume is called clearance ratio.

The ratio of swept volume to the volume at cut-off is called expansion ratio.

The ratio of volume at cut-off to the swept volume is known as cut-off ratio. It is the reciprocal of expansion ratio.

145) The function of a D-slide valve is to exhaust steam from the cylinder at proper moment.

Answer is:

141) Which of the following is required for a steam condensing plant ?

all of these

142) The missing quantity is mainly due to cylinder condensation and a small amount of steam leakage past the valves and piston.

Agree

143) There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called

cushion steam

144) The ratio of the volume at cut-off to the swept volume is called

cut-off ratio

145) The function of a D-slide valve is to exhaust steam from the cylinder at proper moment.

Correct