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.

565. Fouling factor is used

in heat exchanger design as a safety factor
in case of Newtonian fluids
when a liquid exchanges heat with a gas
none of the above
✅ The correct answer is option A.

569. Slack represents the difference between the

earliest completion time and latest allowable time
latest allowable time and earliest completion time
earliest completion time and normal expected time
latest allowable time
✅ The correct answer is option A.