Mechanical Engineering MCQs
Mechanical Engineering MCQs for competitive exams in Pakistan cover thermodynamics, fluid mechanics, machine design, manufacturing, and materials. Ideal for PPSC, FPSC, NTS, and university tests, they help students and professionals enhance concepts and problem-solving skills.
Q: Centrifugal pump impeller is a
A) Rotating blade
B) Static diffuser
C) Stationary vane
D) Fixed blade
Q: Stress concentration occurs due to
A) Large radius
B) Sudden changes in section
C) Uniform loading
D) Long shafts
Q: S-N curve is used to determine
A) Hardness
B) Creep
C) Yield strength
D) Fatigue strength
Q: Lathe operation of reducing diameter is called
A) Facing
B) Reaming
C) Turning
D) Drilling
Q: Carnot cycle is composed of
A) Only reversible processes
B) Two isobaric and two isothermal processes
C) Four adiabatic processes
D) Two adiabatic and two isothermal processes