Q1. 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.
None of the above.
Both are the same.
Q2. Which type of bearing uses rolling elements?
Magnetic bearing
Fluid bearing
Rolling element bearing
Plain bearing
Q3. Which type of cooling system uses air to dissipate heat from an engine?
None of the above
Air cooling system
Liquid cooling system
Hybrid cooling system
Q4. Which type of machining operation produces a smooth surface finish?
Turning
Grinding
Milling
Boring
Q5. Which type of fluid flow is characterized by chaotic movement and irregular eddies?
None of the above
Turbulent flow
Transitional flow
Laminar flow
Q6. What is the difference between torque and power?
Torque is the force that causes rotation, while power is the rate at which work is done.
Power is the force that causes rotation, while torque is the rate at which work is done.
Both are the same.
None of the above.
Q7. Which type of material has the highest Young's modulus?
Copper
Aluminum
Titanium
Steel
Q8. Which type of compressor is more efficient at higher pressure ratios?
Reciprocating compressor
Centrifugal compressor
Screw compressor
Axial compressor
Q9. Which type of fluid flow is characterized by constant velocity and pressure?
Transitional flow
None of the above
Laminar flow
Turbulent flow
Q10. 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.
Q11. Which law states that the pressure of a gas is directly proportional to its temperature?
Charles’s law
Boyle’s law
Avogadro’s law
Gay-Lussac’s law
Q12. Which type of bearing is commonly used in high-speed applications?
Magnetic bearing
Plain bearing
Fluid bearing
Rolling element bearing
Q13. 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.
Q14. Which type of turbine is used in a gas turbine engine?
None of the above
Both
Impulse turbine
Reaction turbine
Q15. Which type of pump is commonly used in high-pressure applications?
Axial flow pump
Positive displacement pump
Centrifugal pump
Mixed flow pump
Q16. What is the difference between a valve and a damper?
Both are the same.
None of the above.
A damper regulates the flow of fluid, while a valve regulates the flow of air.
A valve regulates the flow of fluid, while a damper regulates the flow of air.
Q17. What is the difference between a screw and a bolt?
None of the above.
A screw is threaded all the way to the head, while a bolt has a smooth shank.
A bolt is threaded all the way to the head, while a screw has a smooth shank.
Both are the same.
Q18. Which type of material has the highest tensile strength?
Copper
Aluminum
Titanium
Steel
Q19. Which type of compressor is commonly used in refrigeration systems?
Reciprocating compressor
Scroll compressor
Centrifugal compressor
Screw compressor
Q20. Which type of welding uses a consumable electrode?
TIG welding
Laser welding
Stick welding
MIG welding
Q21. Which type of bearing is commonly used in low-speed and heavy-load applications?
Fluid bearing
Plain bearing
Rolling element bearing
Magnetic bearing
Q22. What is the function of a flywheel?
None of the above
To reduce friction between moving parts
To store energy and smooth out fluctuations in speed
To increase the power output of an engine
Q23. Which type of gear is used to change the direction of rotation?
Spur gear
Worm gear
Helical gear
Bevel gear
Q24. Which type of heat exchanger has the highest heat transfer coefficient?
Double-pipe heat exchanger
Finned tube heat exchanger
Plate heat exchanger
Shell and tube
Q25. What is the function of a gearbox?
To store energy for later use
To transmit power between the engine and the wheels
To convert electrical energy to mechanical energy
None of the above
Q26. What is the difference between a shaft and an axle?
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.
Both are the same.
A shaft transmits power from one component to another, while an axle supports and rotates a wheel or other rotating component.
Q27. Which type of gear is used to transmit power between two non-parallel shafts?
Helical gear
Worm gear
Bevel gear
Spur gear
Q28. 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.
Q29. 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.
Both are the same.
None of the above.
A motor converts electrical energy into mechanical energy, while an engine converts fuel into mechanical energy.