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