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ME Set-1
Steam Nozzles and Turbines
118

Steam Nozzles and Turbines MCQ with Answers

118) In a reaction turbine, when steam flows through the moving blades,

pressure increases while velocity decreases

pressure decreases while velocity increases

pressure and velocity both decreases

pressure and velocity both increases

Answer is:

pressure and velocity both decreases

Steam Nozzles and Turbines MCQ with Answers

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Related Steam Nozzles and Turbines MCQ with Answers

119) In velocity compounding of an impulse turbine, the expansion of steam takes place in a nozzle or a set of nozzles from the boiler pressure to condenser pressure.

Right

Wrong

Answer is:

Right

120) The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure)

p₁ p₂

p₁/p₂

p₂/p₁

p₁ + p₂

Answer is:

p₂/p₁

121) A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as

back pressure turbine

pass out turbine

low pressure turbine

impulse turbine

Answer is:

pass out turbine

122) The stage 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.

Right

Wrong

Answer is:

Wrong

Steam Nozzles and Turbines MCQ with Answers

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