116) In an ideal impulse turbine, the

absolute velocity at the inlet of moving blade is equal to that at the outlet

relative velocity at the inlet of the moving blade is equal to that at the outlet

axial velocity at inlet is equal to that at the outlet

whirl velocity at inlet is equalto that at the outlet

Answer is:

relative velocity at the inlet of the moving blade is equal to that at the outlet

Steam Nozzles and Turbines MCQ with Answers

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117) During flow through a nozzle, no heat is supplied or rejected by the steam.

Agree

Disagree

Answer is:

Agree

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

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

Steam Nozzles and Turbines MCQ with Answers

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116) In an ideal impulse turbine, the

relative velocity at the inlet of the moving blade is equal to that at the outlet

Steam Nozzles and Turbines MCQ with Answers

Related Steam Nozzles and Turbines MCQ with Answers

117) During flow through a nozzle, no heat is supplied or rejected by the steam.

Agree

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

pressure and velocity both decreases

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

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

p2/p1

Steam Nozzles and Turbines MCQ with Answers

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

p₂/p₁