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-6 section-3

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

On Mollier chart, flow through turbine is represented by

A) Horizontal straight line B) Vertical straight line C) Straight inclined line D) Curved line

Discuss

Answer & Solution

Answer: Option B

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

A stage, in reaction turbine, is represented by

A) Number of casing B) Number of entries of steam C) Number of exits of steam D) Each row of blades

Discuss

Answer & Solution

Answer: Option D

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

At very low temperature, the melting and boiling temperatures become equal. This temperature is

A) 373°K B) 273.16°K C) 303°K D) 0°K

Discuss

Answer & Solution

Answer: Option B

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

Carbonization of coal is the process of

A) Pulverizing coal in inert atmosphere B) Heating wood in a limited supply of air at temperatures below 300°C C) Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel D) Binding the pulverized coal into briquettes

Discuss

Answer & Solution

Answer: Option C

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

When the inlet pressure of steam is equal to the exit pressure, then

A) There is a pressure drop in the nozzle B) Fluid flows through the nozzle C) Pressure drops and fluid flows through the nozzle D) There is no pressure drop and fluid does not flow through the nozzle

Discuss

Answer & Solution

Answer: Option D

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

The impulse reaction turbine has its driving force

A) As an impulsive force B) As a reaction force C) Partly as an impulsive force and partly as a reaction force D) None of the above

Discuss

Answer & Solution

Answer: Option C

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

The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity 'V' at inlet)

A) V_b = 0.5Vcosα B) V_b = Vcosα C) V_b = 0.5V²cosα D) V_b = V²cosα

Discuss

Answer & Solution

Answer: Option B

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

The function of injector used in small capacity boilers is to

A) Create vacuum B) Inject chemical solution in feed pump C) Pump water, similar to boiler feed pump D) Add make up water in the system

Discuss

Answer & Solution

Answer: Option C

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

Stoichiometric quantity of air is the

A) Air present in atmosphere at NTP conditions B) Air required for complete combustion of fuel with no excess air C) Air required for optimum combustion so as to have reasonable excess air D) Air required to convert CO into CO₂

Discuss

Answer & Solution

Answer: Option B

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

Which is not correct statement about pulverized fuel firing?

A) High burning rate is possible B) Heat release can be easily controlled C) Fuel burns economically D) It is the best technique for burning high ash content fuel having low fusion ash

Discuss

Answer & Solution

Answer: Option D

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