Mechanical Engineering Steam Nozzles and Turbines Online Test

A nozzle is said to be a convergent nozzle

A turbine is said to have an axial discharge when the steam leaves the blade tip at __________ to the direction of the blade motion.

The flow through a nozzle is regarded as

The ratio of total useful heat drop to the total isentropic heat drop, is called

The pressure at which the steam leaves the nozzle is known as back pressure.

The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

The rate of discharge through the nozzle __________ when the exit pressure is gradually reduced.

In a nozzle, whole frictional loss is assumed to occur between

The critical pressure ratio for initially wet steam is

The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be

The impulse reaction turbine has its driving force

A regenerative steam cycle renders

De-Laval turbine is a

The turbine, in which the general direction of the steam flow is parallel to the turbine axis, is called axial flow turbines

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

The reheat factor is the ratio of the

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

Thermal equilibrium means that the flow of steam is

When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be

The ratio of the workdone on the blades to the energy supplied to the blades, is called

The discharge is __________ at critical pressure.

The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop

The steam leaves the nozzle at a

The critical pressure gives the velocity of steam at the throat

The Parsons’ reaction turbine has

The action of steam in a steam turbine is

The blade velocity coefficient is ratio of relative velocity of steam at outlet tip of the blade to the relative velocity of steam at inlet tip of the blade.

Multi-stage steam turbines are of the

In reaction turbines, the axial thrust is due to

Which of the following statement is correct?