Mech Expert

21. Which of the following is a non-renewable energy source?

A. Solar

B. Wind

C. Natural Gas

D. Hydro

22. What is the primary function of a piston in an engine?

A. To compress air

B. To ignite fuel

C. To convert linear motion to rotary motion

D. To regulate temperature

23. Which type of welding uses a filler material?

A. Arc welding

B. Gas welding

C. MIG welding

D. All of the above

24. What is the main purpose of a clutch in a vehicle?

A. To increase speed

B. To reduce speed

C. To engage and disengage power

D. To regulate temperature

25. Which of the following is a measure of a material's resistance to deformation?

A. Elasticity

B. Plasticity

C. Hardness

D. Ductility

26. What is the primary purpose of a radiator in a vehicle?

A. To cool the engine

B. To heat the cabin

C. To store coolant

D. To filter air

27. Which of the following is a common type of pump?

A. Centrifugal pump

B. Reciprocating pump

C. Gear pump

D. All of the above

28. What is the primary function of a gearbox?

A. To increase torque

B. To reduce speed

C. To change the direction of rotation

D. All of the above

29. Which of the following is a type of composite material?

A. Concrete

B. Steel

C. Aluminum

D. Copper

30. What is the primary purpose of a turbine?

A. To convert thermal energy to mechanical energy

B. To convert mechanical energy to electrical energy

C. To store energy

D. To regulate temperature

Mechanical Engineering MCQs