Q1. What is the function of a gearbox?
To transmit power between the engine and the wheels
None of the above
To convert electrical energy to mechanical energy
To store energy for later use
Q2. Which type of fluid flow is characterized by chaotic movement and irregular eddies?
Turbulent flow
Laminar flow
None of the above
Transitional flow
Q3. Which type of cooling system uses air to dissipate heat from an engine?
Air cooling system
None of the above
Liquid cooling system
Hybrid cooling system
Q4. Which law states that the pressure of a gas is directly proportional to its temperature?
Boyle’s law
Gay-Lussac’s law
Charles’s law
Avogadro’s law
Q5. Which type of welding uses a consumable electrode?
TIG welding
MIG welding
Stick welding
Laser welding
Q6. Which type of fluid flow is characterized by constant velocity and pressure?
Laminar flow
None of the above
Turbulent flow
Transitional flow
Q7. What is the difference between a screw and a bolt?
A screw is threaded all the way to the head, while a bolt has a smooth shank.
None of the above.
A bolt is threaded all the way to the head, while a screw has a smooth shank.
Both are the same.
Q8. Which type of compressor is commonly used in refrigeration systems?
Centrifugal compressor
Scroll compressor
Screw compressor
Reciprocating compressor
Q9. Which type of bearing is commonly used in low-speed and heavy-load applications?
Rolling element bearing
Magnetic bearing
Fluid bearing
Plain bearing
Q10. What is the difference between a motor and an engine?
An engine converts electrical energy into mechanical energy, while a motor converts fuel into mechanical energy.
A motor converts electrical energy into mechanical energy, while an engine converts fuel into mechanical energy.
None of the above.
Both are the same.
Q11. Which type of pump is commonly used in high-pressure applications?
Mixed flow pump
Positive displacement pump
Axial flow pump
Centrifugal pump
Q12. What is the difference between stress and strain?
Both are the same.
Stress is the amount of deformation that occurs as a result of the applied force.
None of the above.
Strain is the amount of force applied per unit area.
Q13. What is the difference between a shaft and an axle?
Both are the same.
None of the above.
An axle transmits power from one component to another, while a shaft supports and rotates a wheel or other rotating component.
A shaft transmits power from one component to another, while an axle supports and rotates a wheel or other rotating component.
Q14. Which type of compressor is more efficient at higher pressure ratios?
Reciprocating compressor
Axial compressor
Centrifugal compressor
Screw compressor
Q15. What is the difference between a gasket and a seal?
None of the above.
A seal prevents fluid leakage between two stationary surfaces, while a gasket prevents fluid leakage between two moving surfaces.
Both are the same.
A gasket prevents fluid leakage between two stationary surfaces, while a seal prevents fluid leakage between two moving surfaces.
Q16. What is the difference between torque and power?
Both are the same.
None of the above.
Power is the force that causes rotation, while torque is the rate at which work is done.
Torque is the force that causes rotation, while power is the rate at which work is done.
Q17. What is the function of a flywheel?
To increase the power output of an engine
To store energy and smooth out fluctuations in speed
None of the above
To reduce friction between moving parts
Q18. Which type of turbine is used in a gas turbine engine?
Both
None of the above
Impulse turbine
Reaction turbine
Q19. Which type of gear is used to change the direction of rotation?
Helical gear
Bevel gear
Worm gear
Spur gear
Q20. What is the difference between ductile and brittle materials?
None of the above.
Both are the same.
Ductile materials can be bent and stretched without breaking, while brittle materials break easily when subjected to stress.
Brittle materials can be bent and stretched without breaking, while ductile materials break easily when subjected to stress.
Q21. Which type of gear is used to transmit power between two non-parallel shafts?
Bevel gear
Helical gear
Spur gear
Worm gear
Q22. Which type of machining operation produces a smooth surface finish?
Turning
Boring
Milling
Grinding
Q23. Which type of bearing is commonly used in high-speed applications?
Magnetic bearing
Plain bearing
Fluid bearing
Rolling element bearing
Q24. Which type of material has the highest tensile strength?
Steel
Copper
Aluminum
Titanium
Q25. Which type of heat exchanger has the highest heat transfer coefficient?
Finned tube heat exchanger
Shell and tube
Plate heat exchanger
Double-pipe heat exchanger
Q26. What is the difference between a valve and a damper?
A valve regulates the flow of fluid, while a damper regulates the flow of air.
Both are the same.
A damper regulates the flow of fluid, while a valve regulates the flow of air.
None of the above.
Q27. Which type of bearing uses rolling elements?
Fluid bearing
Plain bearing
Rolling element bearing
Magnetic bearing
Q28. What is the difference between an open loop and a closed loop control system?
A closed loop control system does not have a feedback loop, while an open loop control system uses a feedback loop to adjust the output.
None of the above.
An open loop control system does not have a feedback loop, while a closed loop control system uses a feedback loop to adjust the output.
Both are the same.
Q29. Which type of material has the highest Young's modulus?
Aluminum
Titanium
Copper
Steel