1. The function of a flywheel is ?

to convert reciprocating motion of the piston into rotary motion

to convert rotary motion of the crankshaft into to and fro motion of the valve rod

to prevent fluctuation of speed

to keep the engine speed uniform at all load conditions

Answer: to prevent fluctuation of speed

Explanation:


2. All steam engines work on ?

Zeroth law of thermodynamics

First law of thermodynamics

Second law of thermodynamics

none of these

Answer: Second law of thermodynamics

Explanation:


3. The chimney draught varies with ?

climatic conditions

temperature of furnace gases

height of chimney

all of these

Answer: all of these

Explanation:


4. In a glass tube type water indicator for a boiler, one end of the tube is connected to wat space and the other end is connected to ?

water space also

chimney

steam space

superheater

Answer: steam space

Explanation:


5. The selection of type and size of a steam boiler depends upon ?

the power required and working pressure

the geographical position of the power house

the fuel and water available

all of the above

Answer: all of the above

Explanation:


6. The average operating pressure of Benson boiler is ?

100 bar

150 bar

200 bar

250 bar

Answer: 250 bar

Explanation:


7. When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a ?

slow speed engine

medium speed steam engine

high speed steam engine

none of these

Answer: medium speed steam engine

Explanation: