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Engineering
Mechanical
ME Set-1
Steam Nozzles and Turbines
52

Steam Nozzles and Turbines MCQ with Answers

52) The pressure of steam at throat of a steam nozzle is called critical pressure.

Agree

Disagree

Answer is:

Agree

Steam Nozzles and Turbines MCQ with Answers

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Related Steam Nozzles and Turbines MCQ with Answers

53) For maximum efficiency of an impulse turbine, the steam should leave the blades at right angles to their motion.

Correct

Incorrect

Answer is:

Correct

54) De-Laval turbine is a

simple impulse turbine

simple reaction turbine

impulse-reaction turbine

none of these

Answer is:

simple impulse turbine

55) The impulse turbine rotor efficiency will have a maximum value of 0.5 cos² ?, where ? is the nozzle exit flow angle, if the

blades are equiangular

blade velocity coefficient is unity

blades are equiangular and frictionless

blade solidity is 0.65

Answer is:

blades are equiangular and frictionless

56) When the cross-section of a nozzle increases continuously from entrance to exit, it is called a

divergent nozzle

convergent nozzle

convergent-divergent nozzle

none of these

Answer is:

divergent nozzle

Steam Nozzles and Turbines MCQ with Answers

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