Q1. Which type of pump is commonly used in high-pressure applications?
Mixed flow pump
Positive displacement pump
Centrifugal pump
Axial flow pump
Q2. Which type of gear is used to transmit power between two non-parallel shafts?
Worm gear
Spur gear
Bevel gear
Helical gear
Q3. What is the function of a flywheel?
None of the above
To reduce friction between moving parts
To increase the power output of an engine
To store energy and smooth out fluctuations in speed
Q4. Which type of heat exchanger has the highest heat transfer coefficient?
Finned tube heat exchanger
Double-pipe heat exchanger
Shell and tube
Plate heat exchanger
Q5. What is the difference between stress and strain?
Strain is the amount of force applied per unit area.
Both are the same.
Stress is the amount of deformation that occurs as a result of the applied force.
None of the above.
Q6. What is the difference between an open loop and a closed loop control system?
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.
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.
Both are the same.
Q7. What is the difference between ductile and brittle materials?
Brittle materials can be bent and stretched without breaking, while ductile materials break easily when subjected to stress.
Both are the same.
None of the above.
Ductile materials can be bent and stretched without breaking, while brittle materials break easily when subjected to stress.
Q8. Which type of fluid flow is characterized by chaotic movement and irregular eddies?
Laminar flow
Transitional flow
Turbulent flow
None of the above
Q9. Which type of bearing uses rolling elements?
Fluid bearing
Plain bearing
Rolling element bearing
Magnetic bearing
Q10. Which law states that the pressure of a gas is directly proportional to its temperature?
Charles’s law
Gay-Lussac’s law
Avogadro’s law
Boyle’s law
Q11. Which type of bearing is commonly used in high-speed applications?
Magnetic bearing
Rolling element bearing
Fluid bearing
Plain bearing
Q12. Which type of machining operation produces a smooth surface finish?
Turning
Boring
Milling
Grinding
Q13. Which type of compressor is commonly used in refrigeration systems?
Scroll compressor
Reciprocating compressor
Screw compressor
Centrifugal compressor
Q14. What is the difference between a gasket and a seal?
None of the above.
Both are the same.
A gasket prevents fluid leakage between two stationary surfaces, while a seal prevents fluid leakage between two moving surfaces.
A seal prevents fluid leakage between two stationary surfaces, while a gasket prevents fluid leakage between two moving surfaces.
Q15. What is the difference between a valve and a damper?
A damper regulates the flow of fluid, while a valve regulates the flow of air.
Both are the same.
None of the above.
A valve regulates the flow of fluid, while a damper regulates the flow of air.
Q16. Which type of material has the highest tensile strength?
Steel
Aluminum
Copper
Titanium
Q17. Which type of compressor is more efficient at higher pressure ratios?
Centrifugal compressor
Reciprocating compressor
Axial compressor
Screw compressor
Q18. What is the function of a gearbox?
To store energy for later use
To convert electrical energy to mechanical energy
None of the above
To transmit power between the engine and the wheels
Q19. Which type of gear is used to change the direction of rotation?
Worm gear
Helical gear
Bevel gear
Spur gear
Q20. Which type of welding uses a consumable electrode?
Laser welding
TIG welding
MIG welding
Stick welding
Q21. Which type of fluid flow is characterized by constant velocity and pressure?
Transitional flow
Laminar flow
Turbulent flow
None of the above
Q22. What is the difference between torque and power?
None of the above.
Both are the same.
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.
Q23. Which type of material has the highest Young's modulus?
Titanium
Aluminum
Steel
Copper
Q24. 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.
Both are the same.
A bolt is threaded all the way to the head, while a screw has a smooth shank.
Q25. What is the difference between a shaft and an axle?
Both are the same.
An axle transmits power from one component to another, while a shaft supports and rotates a wheel or other rotating component.
None of the above.
A shaft transmits power from one component to another, while an axle supports and rotates a wheel or other rotating component.
Q26. 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
Q27. What is the difference between a motor and an engine?
None of the above.
Both are the same.
A motor converts electrical energy into mechanical energy, while an engine converts fuel into mechanical energy.
An engine converts electrical energy into mechanical energy, while a motor converts fuel into mechanical energy.
Q28. Which type of turbine is used in a gas turbine engine?
None of the above
Impulse turbine
Reaction turbine
Both
Q29. Which type of bearing is commonly used in low-speed and heavy-load applications?
Plain bearing
Magnetic bearing
Fluid bearing
Rolling element bearing