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.

Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?

A desirable

B economical

C essential

D optional

Review Detailed Answer

Correct Answer: economical

Steam exhaust from high pressure turbine is reheated in _____________________?

A boiler drum

B superheater tubes

C economiser

D a separate coil

Review Detailed Answer

Correct Answer: a separate coil

The safety valve at superheater as compared to drum safety valve setting is set at___________________?

A higher value

B lower value

C same value

D any value

Review Detailed Answer

Correct Answer: lower value

The pressure of reheat steam after passing through reheater compared to inlet condition is _________________?

A more

B less

C equal

D may be more or less depending on capacity of reheater

Review Detailed Answer

Correct Answer: less

In regenerative air preheater, the heat is transferred _____________________?

A from a metal wall from one medium to another

B from heating an intermediateanaterial and then heating the air from this material

C by direct mixing

D heat is transferred by bleeding some gas from furnace

Review Detailed Answer

Correct Answer: from heating an intermediateanaterial and then heating the air from this material

A safety valve in a locomotive starts leaking. The leaking medium will be_________________?

A water

B dry steam

C wet steam

D super heated steam

Review Detailed Answer

Correct Answer: super heated steam

The diameter of fire tubes in Cochran boiler is of the order of___________________?

A 2 cm

B 6 Cm ,

C 8 cm

D 12 cm

Review Detailed Answer

Correct Answer: 6 Cm ,

With increase in load, radiant super heater has____________________?

A drooping characteristic

B lihear characterisstic

C rising characteristic

D flat characteristic

Review Detailed Answer

Correct Answer: drooping characteristic

The major axis of elliptical manholes on the shell should be provided___________________?

A longitudinally

B circumferentially

C on dished end

D anywhere

Review Detailed Answer

Correct Answer: circumferentially

Size of boiler tubes is specified by___________________?

A mean diameter and thickness

B inside diameter and thickness

C outside diameter and thickness

D outside diameter and inside diameter

Review Detailed Answer

Correct Answer: outside diameter and thickness

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?

Steam exhaust from high pressure turbine is reheated in _____________________?

The safety valve at superheater as compared to drum safety valve setting is set at___________________?

The pressure of reheat steam after passing through reheater compared to inlet condition is _________________?

In regenerative air preheater, the heat is transferred _____________________?

A safety valve in a locomotive starts leaking. The leaking medium will be_________________?

The diameter of fire tubes in Cochran boiler is of the order of___________________?

With increase in load, radiant super heater has____________________?

The major axis of elliptical manholes on the shell should be provided___________________?

Size of boiler tubes is specified by___________________?