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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

The diameter of cylindrical shell of the Lancashire boiler is of the order of__________________?

A 1 tp 1.25m

B 1 to 1.75 m

C 2 to 4 m

D 1.75 to 2.75 m

Review Detailed Answer

Correct Answer: 1.75 to 2.75 m

Which of the following is a fire tube boiler________________?

A locomotive boiler

B Babcock and Wilcox boiler

C Stirling boiler.

D all of the above

Review Detailed Answer

Correct Answer: locomotive boiler

Which of the following substance will have same percentage in both proximate and ultimate analysis___________________?

A ash

B volatile matter

C moisture

D hydrogen

Review Detailed Answer

Correct Answer: ash

Water tube boilers are those in which________________?

A flue gases pass through tubes and water around it

B water passes through the tubes and flue gases around it

C work is done during adiabatic expansion

D change in enthalpy

Review Detailed Answer

Correct Answer: work is done during adiabatic expansion

Steam engine operates on_________________?

A carnot cycle

B joule cycle

C Stirling cycle

D brayton cycle

Review Detailed Answer

Correct Answer: brayton cycle

The lenght of Cornish boiler is of the order of _________________?

A 2-4 m

B 3-5 m

C 5-7.5 m

D 7-9 m

Review Detailed Answer

Correct Answer: 5-7.5 m

For burning 1 kg of carbon to CO as per chemically correct combusiton, amount of air required is___________________?

A 1 kg

B 4/3kg

C 8/3kg

D 2 kg

Review Detailed Answer

Correct Answer: 4/3kg

Which of the following gases has the highest calorific value ________________?

A producer gas

B coal gas

C water gas

D blast furnace gas

Review Detailed Answer

Correct Answer: coal gas

Efficiency of a thermal cycle increases by ________________?

A regeneration

B reheating of steam

C both A. and B.

D cooling of steam

Review Detailed Answer

Correct Answer: both A. and B.

Efficiency of rankine cycle can be increased by_________________?

A decreasing initial steam pressure and temperature

B increasing exhaust pressure

C decreasing exhaust pressure

D increasing the expansion ratio

Review Detailed Answer

Correct Answer: decreasing initial steam pressure and temperature

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The diameter of cylindrical shell of the Lancashire boiler is of the order of__________________?

Which of the following is a fire tube boiler________________?

Which of the following substance will have same percentage in both proximate and ultimate analysis___________________?

Water tube boilers are those in which________________?

Steam engine operates on_________________?

The lenght of Cornish boiler is of the order of _________________?

For burning 1 kg of carbon to CO as per chemically correct combusiton, amount of air required is___________________?

Which of the following gases has the highest calorific value ________________?

Efficiency of a thermal cycle increases by ________________?

Efficiency of rankine cycle can be increased by_________________?