quiz based on steam nozzles

What is the primary purpose of a steam nozzle?

• • a) Increase pressure

• • b) Decrease velocity

• • c) Convert heat energy of steam into kinetic energy

• • d) Reduce temperature

The smallest section of a steam nozzle is called the:

• • a) Neck

• • b) Throat

• • c) Exit

• • d) Inlet

What type of nozzle has an area that first decreases then increases?

• • a) Convergent

• • b) Divergent

• • c) Convergent-divergent

• • d) Cylindrical

In a steam nozzle, the flow is typically considered

• • a) Isothermal

• • b) Isobaric

• • c) Adiabatic

• • d) Polytropic

1. Which property increases when steam passes through a nozzle?

• • a) Pressure

• • b) Temperature

• • c) Velocity

• • d) Density

The main function of a nozzle in steam turbines is to:

• • a) Decrease steam temperature

• • b) Convert pressure energy into kinetic energy

• • c) Increase steam pressure

• • d) Reduce enthalpy

The pressure at which steam leaves a nozzle is referred to as

• • a) Atmospheric pressure

• • b) Back pressure

• • c) Gauge pressure

• • d) Static pressure

Which kind of nozzle is used for supersonic flow?

• • a) Convergent

• • b) Divergent

• • c) Convergent-divergent

• • d) Cylindrical

The area at the throat of a nozzle is:

• • a) Maximum

• • b) Minimum

• • c) Same as exit

• • d) Variable

Nozzle efficiency is defined as:

• • a) Actual velocity / Theoretical velocity

• • b) Actual discharge / Theoretical discharge

• • c) Actual area / Theoretical area

• • d) Actual pressure / Theoretical pressure