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