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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.

Water contained in a beaker can be made to boil by passing steam through it__________________?

A at atmospheric pressure

B at a pressure below the firuosphejric pressure

C at a pressure greater than atmospheric pressure

D any pressure

Review Detailed Answer

Correct Answer: at a pressure greater than atmospheric pressure

The energy of molecular motion appears as________________?

A heat

B potential energy

C surface tension

D friction

Review Detailed Answer

Correct Answer: heat

The unit’of universal gas constant is___________________?

A watts/°K

B dynes/°C

C ergscm/°K

D erg/°K

Review Detailed Answer

Correct Answer: erg/°K

I kgf/cm2 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: 735.6 mm Hg

One barometric pressure or 1 atmospheric pressure is equal to___________________?

A 1 kgf/cnr2

B 1.033 kgf/cm2

C 0 kgf/cm2

D 1.0197 kgf/cm2

Review Detailed Answer

Correct Answer: 1.033 kgf/cm2

A perpetual motion machine is___________________?

A a thermodynamic machine

B a non-thermodynamic machine

C a hypothetical machine

D a hypothetical machine whose opera-tion would violate the laws of thermodynamics

Review Detailed Answer

Correct Answer: a hypothetical machine

According to Clausis statement of second law of thermodynamics___________________?

A heat can’t be transferred from low temperature source to high temperature source

B heat can be transferred for low temperature to high temperature source by using refrigeration cycle.

C heat can be transferred from low temperature to high temperature source if COP of process is more than unity

D heat can’t be transferred from low temperature to high temperature source without the aid of external energy

Review Detailed Answer

Correct Answer: heat can’t be transferred from low temperature to high temperature source without the aid of external energy

Diesel cycle consists of following four processes_________________?

A two isothermals and two isentropics

B two isentropics, and two constant volumes.

C two isentropics, one constant volume and one constant pressure

D two isentropics and two constant pressures

Review Detailed Answer

Correct Answer: two isentropics, one constant volume and one constant pressure

Stirling and Ericsson cycles are__________________?

A reversible cycles

B irreversible cycles

C quasi-static cycles

D semi-reversible cycles

Review Detailed Answer

Correct Answer: reversible cycles

Reversed joule cycle is called_________________?

A Carnot cycle

B Rankine cycle

C Brayton cycle

D Bell Coleman cycle

Review Detailed Answer

Correct Answer: Brayton cycle

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Water contained in a beaker can be made to boil by passing steam through it__________________?

The energy of molecular motion appears as________________?

The unit’of universal gas constant is___________________?

I kgf/cm2 is equal to________________?

One barometric pressure or 1 atmospheric pressure is equal to___________________?

A perpetual motion machine is___________________?

According to Clausis statement of second law of thermodynamics___________________?

Diesel cycle consists of following four processes_________________?

Stirling and Ericsson cycles are__________________?

Reversed joule cycle is called_________________?