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.

Sensible heat is the heat required to __________________?

A change vapour into liquid

B change liquid into vapour

C increase the temperature of a liquid of vapour

D convert water into steam and superheat it

Review Detailed Answer

Correct Answer: increase the temperature of a liquid of vapour

Thermal conductivity of solid metals with rise in temperature normally___________________?

A increases

B decreases

C remains constant

D may increase or decrease depending on temperature

Review Detailed Answer

Correct Answer: decreases

When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by ___________________?

A conduction

B convection

C radiation

D conduction and convection

Review Detailed Answer

Correct Answer: conduction

Unit of thermal conductivity in M.K.S. units is ___________________?

A kcal/kg m2 °C

B kcal-m/hr m2 °C

C kcal/hr m2 °C

D kcal-m/hr °C

Review Detailed Answer

Correct Answer: kcal-m/hr m2 °C

Thermal conductivity of non-metallic amorphous solids with decrease in temperature __________________?

A increases

B decreases

C remains constant

D may increase or decrease depending on temperature

Review Detailed Answer

Correct Answer: decreases

The insulation ability of an insulator with the presence of moisture would_________________?

A increase

B decrease

C remain unaffected

D may increase/decrease depending on temperature and thickness of insulation

Review Detailed Answer

Correct Answer: decrease

Heat is closely related with___________________?

A liquids

B energy

C temperature

D entropy

Review Detailed Answer

Correct Answer: temperature

When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________________?

A conduction

B convection

C radiation

D conduction and convection

Review Detailed Answer

Correct Answer: radiation

Heat transfer takes place as per ________________?

A zeroth law of thermodynamics

B first law of thermodynamic

C second law of the thermodynamics

D Kirchoff’s law E. Stefan’s law

Review Detailed Answer

Correct Answer: second law of the thermodynamics

According to Wien’s law, the wavelength corresponding to maximum energy is proportion to ________________?

A absolute temperature (T)

B I2

C f

D t

Review Detailed Answer

Correct Answer: absolute temperature (T)

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Sensible heat is the heat required to __________________?

Thermal conductivity of solid metals with rise in temperature normally___________________?

When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by ___________________?

Unit of thermal conductivity in M.K.S. units is ___________________?

Thermal conductivity of non-metallic amorphous solids with decrease in temperature __________________?

The insulation ability of an insulator with the presence of moisture would_________________?

Heat is closely related with___________________?

When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________________?

Heat transfer takes place as per ________________?

According to Wien’s law, the wavelength corresponding to maximum energy is proportion to ________________?