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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4573. Linde welding uses

neutral flame and right-ward technique
oxidising flame and left-ward technique
neutral flame and left-ward technique
carburising flame and
✅ The correct answer is option D.

4577. The function of an eccentric rod is

to provide reciprocating motion to the slide valve
to convert reciprocating motion of the piston into rotary motion of the crank
to convert rotary motion of the crankshaft into to and fro motion of the valve rod
to provide simple harm
✅ The correct answer is option C.

4578. For arc welding

alternating current with high frequency is used
alternating current with low frequency is used
direct current is used
any one of these
✅ The correct answer is option C.

4580. In process annealing, the hypo-eutectoid steel is

heated from 30° C to 50° C above the upper critical temperature and then cooled in still air
heated from 30° C to 50° C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
heated from 30° C to 50° C above the upper critical temperature and then cooled slowly in the furnace
heated below or close
✅ The correct answer is option D.
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