Steam Nozzles and Turbines MCQ with Answers

Steam Nozzles and Turbines MCQ with Answers

86) The Rankine efficiency depends upon total useful heat drop and total isentropic heat drop.

Answer is:

Incorrect

87) Blading efficiency is also known as

Answer is:

diagram efficiency

88) The pressure of steam, in reaction turbines, is reduced in the fixed blades as well as in moving blades.

Answer is:

Correct

89) In order to reduce the rotor speed of an impulse turbine, the method employed is

Answer is:

all of these

Explanation:

In order to reduce the rotor speed of an impulse turbine, the method employed is
* velocity compounding
* pressure compounding
* pressure-velocity compounding

90) The nozzle efficiency is the ratio of

Answer is:

86) The Rankine efficiency depends upon total useful heat drop and total isentropic heat drop.

Incorrect

87) Blading efficiency is also known as

diagram efficiency

88) The pressure of steam, in reaction turbines, is reduced in the fixed blades as well as in moving blades.

Correct

89) In order to reduce the rotor speed of an impulse turbine, the method employed is

all of these

90) The nozzle efficiency is the ratio of

energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam