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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.

The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will______________?

A increase

B decrease

C remain unchanged

D increase/decrease depending on ap-plication

Review Detailed Answer

Correct Answer: decrease

Which of the following cycles has maximum efficiency_____________?

A Rankine

B Stirling

C Carnot

D Brayton

Review Detailed Answer

Correct Answer: Carnot

The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as_________________?

A Dual combustion cycle

B Diesel cycle

C Atkinson cycle

D Rankine cycle

Review Detailed Answer

Correct Answer: Atkinson cycle

Brayton 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 pres-sures

Review Detailed Answer

Correct Answer: two isentropics and two constant pres-sures

A cycle consisting of two adiabatics and two constant pressure processes is known as___________________?

A Otto cycle

B Ericsson cycle

C Joule cycle

D Stirling cycle

Review Detailed Answer

Correct Answer: Joule cycle

If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle___________________?

A more

B less

C equal

D depends on other factors

Review Detailed Answer

Correct Answer: equal

Carnot cycle is__________________?

A a reversible cycle (ft) an irreversible cycle

C a semi-reversible cycle

D a quasi static cycle

Review Detailed Answer

Correct Answer: a reversible cycle (ft) an irreversible cycle

For same compression ratio and for same heat added_________________?

A Otto cycle is more efficient than Diesel cycle

B Diesel cycle is more efficient than Otto cycle

C efficiency depends on other factors

D both Otto and Diesel cycles are equally efficient

Review Detailed Answer

Correct Answer: Otto cycle is more efficient than Diesel cycle

Otto 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 pres-sures

Review Detailed Answer

Correct Answer: two isentropics and two constant volumes

Thermal power plant works on______________?

A Carnot cycle

B Joule cycle

C Rankine cycle

D Otto cycle

Review Detailed Answer

Correct Answer: Rankine cycle

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will______________?

Which of the following cycles has maximum efficiency_____________?

The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as_________________?

Brayton cycle consists’ of following four processes____________________?

A cycle consisting of two adiabatics and two constant pressure processes is known as___________________?

If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle___________________?

Carnot cycle is__________________?

For same compression ratio and for same heat added_________________?

Otto cycle consists of following four processes____________________?

Thermal power plant works on______________?