MCQsDrive | MCQsDrive

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.

For which of the following substances, the gas laws can be used with minimum error_________________?

A dry steam

B wet steam

C saturated steam

D superheated steam

Review Detailed Answer

Correct Answer: superheated steam

The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is______________________?

A 29.27 kgfm/mol°K

B 8314kgfm/mol°K

C 848kgfm/mol°K

D 427kgfm/mol°K

Review Detailed Answer

Correct Answer: 848kgfm/mol°K

Universal gas constant is defined as equal to product of the molecular weight of the gas and_______________?

A specific heat at constant pressure

B specific heat at constant volume

C ratio of two specific heats

D gas constant

Review Detailed Answer

Correct Answer: gas constant

For which of the following substances, the internal energy and enthalpy are the functions of temperature only____________________?

A any gas

B saturated steam

C water

D perfect gas

Review Detailed Answer

Correct Answer: perfect gas

If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called___________________?

A free expansion

B hyperbolic expansion

C adiabatic expansion

D parabolic expansion

Review Detailed Answer

Correct Answer: free expansion

Which of the following processes is irreversible process___________________?

A isothermal

B adiabatic

C throttling

D all of the above

Review Detailed Answer

Correct Answer: throttling

For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be___________________?

A zero

B minimum

D infinity

Review Detailed Answer

Correct Answer: zero

Molecular volume of any perfect gas at 600 x 103 N/m2 and 27°C will be ____________________?

A 4.17m3/kgmol

B 400 m3/kg mol

C 0.15 m3/kg mol

D 41.7 m3/kg mol

Review Detailed Answer

Correct Answer: 4.17m3/kgmol

The more effective way of increasing efficiency of Carnot engine is to____________________?

A increase higher temperature

B decrease higher temperature

C increase lower temperature

D decrease lower temperature

Review Detailed Answer

Correct Answer: decrease lower temperature

For reversible adiabatic process, change in entropy is_________________?

A maximum

B minimum

C zero

D unpredictable

Review Detailed Answer

Correct Answer: zero

Showing 1651 to 1660 of 1919 results

Contact Info

Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

For which of the following substances, the gas laws can be used with minimum error_________________?

The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is______________________?

Universal gas constant is defined as equal to product of the molecular weight of the gas and_______________?

For which of the following substances, the internal energy and enthalpy are the functions of temperature only____________________?

If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called___________________?

Which of the following processes is irreversible process___________________?

For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be___________________?

Molecular volume of any perfect gas at 600 x 103 N/m2 and 27°C will be ____________________?

The more effective way of increasing efficiency of Carnot engine is to____________________?

For reversible adiabatic process, change in entropy is_________________?