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

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.

Each section contains 100 MCQs on Steam Boilers, Engines, Nozzles and Turbines .
1
The expansion of steam in a nozzle follows
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Answer: Option B
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2
In a uniflow engine
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Answer: Option B
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3
The mechanical draught _________ with the amount of smoke.
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Answer: Option A
Solution:
Mechanical draught refers to the artificial method of supplying air and removing flue gases using fans in a boiler system.

Smoke formation occurs due to incomplete combustion of fuel, which indicates insufficient air supply.

When the amount of smoke increases, it means combustion is poor and more air is required to burn the fuel completely.

To overcome this, the mechanical draught is increased so that more air is supplied to the furnace, improving combustion and reducing smoke.

Hence, mechanical draught increases with the amount of smoke.
4
Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of
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Answer: Option C
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5
A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
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Answer: Option B
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6
The radius of a dished head is taken approximately as
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Answer: Option C
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7
Boiler parameters are expressed by
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Answer: Option D
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8
The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having cranks
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Answer: Option A
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9
The high pressure and low pressure cylinders in a Tandem type compound engine are regarded as having cranks
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Answer: Option C
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10
The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks
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Answer: Option B
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