Steam Boilers, Engines, Nozzles And Turbines MCQ Questions & Answers

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Learn Steam Boilers, Engines, Nozzles And Turbines MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Steam Boilers, Engines, Nozzles And Turbines MCQ question is the important chapter for a Mechanical Engineering and GATE students. Page-8 section-2

Each section contains 100 MCQs on Steam Boilers, Engines, Nozzles and Turbines .

The critical pressure gives the velocity of steam at the throat

A) Equal to the velocity of sound B) Less than the velocity of sound C) More than the velocity of sound D) None of these

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A regenerative steam cycle renders

A) Increased work output per unit mass of steam B) Decreased work output per unit mass of steam C) Increased thermal efficiency D) Decreased work output per unit mass of steam as well as increased thermal efficiency

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The flow of steam is supersonic

A) At the entrance to the nozzle B) At the throat of the nozzle C) In the convergent portion of the nozzle D) In the divergent portion of the nozzle

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The equivalent evaporation of a boiler is a measure to compare

A) The given boiler with the model B) The two different boilers of the same make C) Two different makes of boilers operating under the same operating conditions D) Any type of boilers operating under any conditions

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Desecration of feed water is carried out because it reduces

A) Cavitation of boiler feed pumps B) Corrosion caused by oxygen C) Heat transfer coefficient D) pH value of water

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The velocity of steam at throat of the nozzle is __________ the velocity of sound.

A) Equal to B) Less than C) More than D) None of these

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The friction in the nozzle __________ exit velocity of steam.

A) Has no effect on B) Decreases C) Increases D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

For water, at pressures below atmospheric;

A) Melting point rises slightly and boiling point drops markedly B) Melting point rises markedly and boiling point drops markedly C) Melting point drops slightly and boiling point drops markedly D) Melting point drops slightly and boiling point drops slightly

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by

A) Throttling calorimeter B) Separating calorimeter C) Combined separating and throttling calorimeter D) Bucket calorimeter

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following statement is correct?

A) The efficiency of steam turbines is greater than steam engines B) A flywheel is a must for steam turbine C) The turbine blades do not change the direction of steam issuing from the nozzle D) The pressure of steam, in reaction turbines, is increased in fixed blades as well as in moving blades

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Steam Boilers, Engines, Nozzles And Turbines MCQ Questions & Answers | Mechanical Engineering