Mechanical Engineering MCQs
Mechanical Engineering MCQs are a crucial resource for students and job seekers preparing for competitive tests in Pakistan. This section features MCQs from all major areas including thermodynamics, fluid mechanics, machine design, manufacturing processes, engineering materials, and mechanics of solids. These questions are crafted to meet the standards of exams like PPSC, FPSC, NTS, and university entry or semester tests. Each MCQ is aimed at testing your fundamental understanding and problem-solving ability, making them perfect for both fresh graduates and experienced professionals. With a wide range of topics, this category ensures a comprehensive practice session for anyone looking to ace Mechanical Engineering exams.
Q: When metal is plastically deformed
A) It returns to original shape
B) Strain becomes zero
C) It undergoes permanent deformation
D) It fails
Q: Draft in a boiler system is required for
A) Fuel combustion
B) Pump operation
C) Steam formation
D) Water level maintenance
Q: Tensile strength is maximum in
A) Copper
B) Wrought iron
C) Cast iron
D) Mild steel
Q: Steam is a
A) Superheated liquid
B) Vapor
C) Perfect gas
D) Incompressible fluid
Q: Cutting fluids are used in machining to
A) Harden tool
B) Increase friction
C) Cool tool and workpiece
D) Remove chips
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