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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4951. Discharge of a centrifugal pump is

directly proportional to diameter of its impeller
inversely proportional to diameter of its impeller
directly proportional to (diameter)2 of its impeller
inversely proportional to (diameter)2 of its impeller
✅ The correct answer is option C.

4955. Which of the following statement is correct?

The expansion of steam in a nozzle follows Rankine cycle.
The friction in the nozzle increases the dryness fraction of steam.
The pressure of steam at throat is called critical pressure.
all of the above
✅ The correct answer is option D.

4958. In radial tyres

one ply layer runs diagonally one way and another layer runs diagonally the other way
all plies run parallel to one another and vertical to tyre bead
inner tubes are always used
none of these
✅ The correct answer is option B.

4959. De-Laval turbine is a

single rotor impulse turbine
multi-rotor impulse turbine
impulse reaction turbine
none of these
✅ The correct answer is option A.
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