Mechanical Engineering

Prepare with the best Mechanical Engineering MCQs with answers and explanations for exams, interviews, and job tests. Our collection covers core topics such as engineering mechanics, thermodynamics, strength of materials, theory of machines, fluid mechanics, heat transfer, manufacturing processes, machine design, and power plant engineering. These Mechanical Engineering multiple-choice questions are designed for students, fresh graduates, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your technical knowledge and problem-solving ability with our updated and comprehensive Mechanical Engineering MCQs.

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2202. In an open pair, the two elements of a pair

have a surface contact when in motion
have a line or point contact when in motion
are kept in contact by the action of external forces, when in motion
are not held together
✅ The correct answer is option D.

2205. Bell-Coleman cycle is a

reversed Carnot cycle
reversed Otto cycle
reversed Joule cycle
reversed Rankine cycle
✅ The correct answer is option C.

2207. The purpose of a balancer shaft is to

balance the timing in the movement of the two groups of pistons
increase inertia force of the rotating crankshaft
reduce vibrations caused by the crankshaft rotation
adjust the timing of t
✅ The correct answer is option C.
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