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: Crankshaft converts
A) Heat to work
B) Rotary to linear motion
C) Linear to rotary motion
D) Work to heat
Q: Brinell hardness test uses
A) A steel ball
B) A diamond pyramid
C) A flat punch
D) An indenter
Q: Shear force in a beam is maximum at
A) Mid-span
B) Neutral axis
C) Free end
D) Fixed end
Q: Tensile test is used to determine
A) Elongation
B) Fracture toughness
C) Modulus of rigidity
D) Impact strength
Q: In IC engines, knocking occurs due to
A) Early ignition
B) Late ignition
C) Carburetion
D) Detonation