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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4837. Coefficient of contraction is the ratio of

actual velocity of jet at vena contracta to the theoretical velocity
loss of head in the orifice to the head of water available at the exit of the orifice
actual discharge through an orifice to the theoretical discharge
area of jet at vena contracta to the area of orifice
✅ The correct answer is option D.
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