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.

Ram-jet engine__________________?

A is self-operating at zero flight speed

B is not self-operating at zero^flight speed

C requires no air for its operation

D produces a jet consisting of plasma

Review Detailed Answer

Correct Answer: is not self-operating at zero^flight speed

A simple turbo-jet engine is basically_________________?

A a propeller system

B gas-turbine engine equipped with a propulsive nozzle and diffuse*

C chemical rocket regine

D ram-jet enigne

Review Detailed Answer

Correct Answer: gas-turbine engine equipped with a propulsive nozzle and diffuse*

In turbo fan engine, the jet velocity as compared to turbo-jet engine is_________________?

A less

B more

C same

D may be less or more depening upon speed

Review Detailed Answer

Correct Answer: less

Pressure ratio in gas turbines is the ratio of ____________________?

A compressor pressure ratio

B highest pressure to exhaust pressure

C inlet pressure to exhaust pressure

D pressures across the turbine

Review Detailed Answer

Correct Answer: highest pressure to exhaust pressure

Turbofan engine employs ____________________ ?

A one air stream

B two or more air streams

C no air stream

D solid fuel firing

Review Detailed Answer

Correct Answer: two or more air streams

The compression ratio in a jet engine varies proportional to ____________________?

A speed

B speed

C altitude

D Vspeed

Review Detailed Answer

Correct Answer: speed

For speed above 3000 km/hour, it is more advantageous to use____________________?

A turbo-jet engine

B ram-jet engine

C propellers

D rockets

Review Detailed Answer

Correct Answer: ram-jet engine

The efficiency of jet engine is__________________?

A higher at ground

B higher at high altitudes

C same at all altitudes

D higher at high speed

Review Detailed Answer

Correct Answer: higher at high altitudes

Reheating in multistage expansion gas turbine results in____________________?

A high thermal efficiency

B reduction in compressor work

C decrease of heat loss in exhaust

D maximum work output

Review Detailed Answer

Correct Answer: maximum work output

Gas turbine cycle with Regenerator __________________?

A increases thermal efficiency

B allows high compression ratio

C decreases heat loss is exhaust

D allows operation at very high altitudes

Review Detailed Answer

Correct Answer: increases thermal efficiency

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Ram-jet engine__________________?

A simple turbo-jet engine is basically_________________?

In turbo fan engine, the jet velocity as compared to turbo-jet engine is_________________?

Pressure ratio in gas turbines is the ratio of ____________________?

Turbofan engine employs ____________________ ?

The compression ratio in a jet engine varies proportional to ____________________?

For speed above 3000 km/hour, it is more advantageous to use____________________?

The efficiency of jet engine is__________________?

Reheating in multistage expansion gas turbine results in____________________?

Gas turbine cycle with Regenerator __________________?