14) A draught produced by a chimney due to the difference of densities between the hot gases inside the chimney and cold atmospheric air outside it, is called natural draught.

Yes

Unknown

None

Answer is:

Yes

A fire tube boiler occupies less space than a water tube boiler, for a given power.

Steam at a high pressure and in large quantities can be produced with a simple vertical boiler.

A simple vertical boiler has one fire tube.

all of the above

Answer is:

blow off cock

fusible plug

superheater

stop valve

Answer is:

one-fourth

one-third

two-fifth

three-fifth

Answer is:

increases

decreases

has no effect on

none of these

Answer is: