STEAM BOILERS, ENGINES, NOZZLES AND TURBINES

Injector

Feed pump

Pressure gauge

Feed check valve

None of these

To measure pressure of steam inside the steam boiler

To indicate the water level inside the boiler to an observer

To blow off steam when the pressure of steam inside the boiler exceeds the working pressure

To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment

To transfer motion from the piston to the cross-head

To guide motion of the piston rod and to prevent it from bending

None of these

Constant temperature process

Non-heat transfer process

Reversible process

Essentially an isentropic process

2 sin²α/(1 + sin²α)

2 cos²α/(1 + cos²α)

(1 + sin²α)/2 sin²α

(1 + cos²α)/2 cos²α