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: How does increasing piston speed affect volumetric efficiency in an engine?
A) No effect
B) Decreases it
C) Doubles it
D) Increases it
Q: Bernoulli’s equation is applicable only to which type of fluid?
A) Incompressible and non-viscous
B) Non-Newtonian fluid
C) Real gas
D) Compressible and viscous
Q: The modulus of resilience is the area under which part of the stress-strain curve?
A) Elastic region
B) Necking region
C) Plastic region
D) Fracture point
Q: How does thermal expansion affect the fit between shaft and hole in engineering assemblies?
A) Tightens fit
B) No effect
C) Loosens fit
D) Causes leakage
Q: Euler’s formula is used for calculating buckling load of which structures?
A) Shafts
B) Plates
C) Beams
D) Columns