The efficiency of steam turbines is greater than steam engines.

A flywheel is a must for steam turbine.

The turbine blades do not change the direction of steam issuing from the nozzle

The pressure of steam, in reaction turbines, is increased in fixed blades as well as in moving blades

more

less

zero

none of these

wet steam

dry saturated steam

superheated steam

none of these

The critical pressure gives the velocity of steam at the throat equal to the velocity of sound.

The flow in the convergent portion of the nozzle is sub-sonic.

The flow in the divergent portion of the nozzle is super-sonic.

To increase the velocity of steam above sonic velocity (super-sonic) by expanding steam below the critical pressure, the divergent portion for the nozzle is not necessary.

sin² ?

cos² ?

tan² ?

cot² ?