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Engineering
Mechanical
ME Set-1
Steam Nozzles and Turbines
112

Steam Nozzles and Turbines MCQ with Answers

112) The effect of friction in the nozzle __________ dryness fraction of steam.

has no effect on

decreases

increases

none of these

Answer is:

increases

Steam Nozzles and Turbines MCQ with Answers

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Related Steam Nozzles and Turbines MCQ with Answers

113) In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30 Degree. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be

160/3 m/s

320/3 m/s

640/3 m/s

640 m/s

Answer is:

640/3 m/s

114) In pressure compounding of an impulse turbine, the total pressure drop of the steam does not take place in the first nozzle ring, but is divided equally among all the nozzle rings.

Agree

Disagree

Answer is:

Agree

115) When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

increases

decreases

Answer is:

decreases

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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