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.

Kelvin Planck’s law deals with___________________?

A conservation of heat

B conservation of work

C conversion of heat into work

D conversion fo work into heat

Review Detailed Answer

Correct Answer: conversion of heat into work

The first law of thermodynamics is the law of_________________?

A conservation of mass

B conservation of energy

C conservation of momentum

D conservation of heat

Review Detailed Answer

Correct Answer: conservation of energy

Barometric pressure is equal to_____________________?

A 760 mm Hg

B zero mm Hg

C 735.6 mm Hg

D 1 mm Hg

Review Detailed Answer

Correct Answer: 760 mm Hg

Calorie is a measure of

A specific heat

B quantity of heat

C thermal capacity

D entropy

Review Detailed Answer

Correct Answer: quantity of heat

A sudden fall in the barometer reading is a sign of approaching________________?

A fine weather

B rains

C storm

D cold wave

Review Detailed Answer

Correct Answer: storm

During throttling process___________________?

A heat exchange does not take place

B no work is done by expanding steam

C there is no change of internal energy of steam

D all of the above

Review Detailed Answer

Correct Answer: all of the above

Compressed air coming out from a punctured football___________________?

A becomes hotter

B becomes cooler1

C remains at the same temperature

D may become hotter or cooler depend-ing upon the humidity of the surround¬ing air

Review Detailed Answer

Correct Answer: becomes cooler1

An adiabatic wall is one which__________________?

A prevents thermal interaction

B permits thermal interaction

C encourages thermal interaction

D discourages thermal interaction

Review Detailed Answer

Correct Answer: prevents thermal interaction

In a Carnot cycle, heat is transferred at_______________________?

A constant pressure

B constant volume

C constant temperature

D constant enthaply

Review Detailed Answer

Correct Answer: constant temperature

An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is___________________?

A feasible

B impossible

C possible

D possible, but with lot of sophistications

Review Detailed Answer

Correct Answer: possible

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Kelvin Planck’s law deals with___________________?

The first law of thermodynamics is the law of_________________?

Barometric pressure is equal to_____________________?

Calorie is a measure of

A sudden fall in the barometer reading is a sign of approaching________________?

During throttling process___________________?

Compressed air coming out from a punctured football___________________?

An adiabatic wall is one which__________________?

In a Carnot cycle, heat is transferred at_______________________?

An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is___________________?