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ME Set-1
Steam Nozzles and Turbines
48

Steam Nozzles and Turbines MCQ with Answers

48) In a reaction turbine, when steam flows through the fixed blades,

pressure increases while velocity decreases

pressure decreases while velocity increases

pressure and velocity both decreases

pressure and velocity both increases

Answer is:

pressure decreases while velocity increases

Steam Nozzles and Turbines MCQ with Answers

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Related Steam Nozzles and Turbines MCQ with Answers

49) A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be

79 m/s

188 m/s

450 m/s

900 m/s

Answer is:

450 m/s

50) In a De-Laval impulse turbine, the nozzle is kept very close to the blades.

Yes

No

Unknown

None

Answer is:

Yes

51) The flow of steam is super-sonic

at the entrance to the nozzle

at the throat of the nozzle

in the convergent portion of the nozzle

in the divergent portion of the nozzle

Answer is:

in the divergent portion of the nozzle

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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