STEAM BOILERS, ENGINES, NOZZLES AND TURBINES

Feed check valve

Injector

Pressure gauge

Feed pump

None of these

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 measure pressure of steam inside the steam boiler

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

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

To transfer motion from the piston to the cross-head

None of these

Reversible process

Essentially an isentropic process

Constant temperature process

Non-heat transfer process

(1 + cos²α)/2 cos²α

(1 + sin²α)/2 sin²α

2 cos²α/(1 + cos²α)

2 sin²α/(1 + sin²α)