Q1. What is the difference between a gasket and a seal?
None of the above.
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.
Q2. Which type of fluid flow is characterized by constant velocity and pressure?
Transitional flow
Laminar flow
Turbulent flow
None of the above
Q3. 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.
Both are the same.
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.
Q4. 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.
Q5. Which type of material has the highest tensile strength?
Aluminum
Steel
Titanium
Copper
Q6. 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.
Q7. Which type of material has the highest Young's modulus?
Copper
Aluminum
Titanium
Steel
Q8. What is the difference between ductile and brittle materials?
None of the above.
Both are the same.
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.
Q9. Which type of heat exchanger has the highest heat transfer coefficient?
Shell and tube
Finned tube heat exchanger
Double-pipe heat exchanger
Plate heat exchanger
Q10. 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
Q11. Which type of machining operation produces a smooth surface finish?
Turning
Boring
Milling
Grinding
Q12. 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.
None of the above.
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.
Q13. 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.
Q14. Which type of compressor is commonly used in refrigeration systems?
Reciprocating compressor
Scroll compressor
Centrifugal compressor
Screw compressor
Q15. What is the difference between a motor and an engine?
Both are the same.
An engine converts electrical energy into mechanical energy, while a motor converts fuel into mechanical energy.
None of the above.
A motor converts electrical energy into mechanical energy, while an engine converts fuel into mechanical energy.
Q16. Which type of cooling system uses air to dissipate heat from an engine?
Air cooling system
Hybrid cooling system
None of the above
Liquid cooling system
Q17. Which type of welding uses a consumable electrode?
TIG welding
MIG welding
Stick welding
Laser welding
Q18. What is the difference between stress and strain?
Both are the same.
Strain is the amount of force applied per unit area.
Stress is the amount of deformation that occurs as a result of the applied force.
None of the above.
Q19. Which type of bearing uses rolling elements?
Rolling element bearing
Fluid bearing
Magnetic bearing
Plain bearing
Q20. Which type of gear is used to change the direction of rotation?
Worm gear
Bevel gear
Spur gear
Helical gear
Q21. What is the function of a flywheel?
To increase the power output of an engine
None of the above
To reduce friction between moving parts
To store energy and smooth out fluctuations in speed
Q22. What is the function of a gearbox?
To transmit power between the engine and the wheels
To convert electrical energy to mechanical energy
To store energy for later use
None of the above
Q23. Which type of compressor is more efficient at higher pressure ratios?
Reciprocating compressor
Screw compressor
Axial compressor
Centrifugal compressor
Q24. Which type of bearing is commonly used in low-speed and heavy-load applications?
Magnetic bearing
Plain bearing
Fluid bearing
Rolling element bearing
Q25. Which type of bearing is commonly used in high-speed applications?
Magnetic bearing
Plain bearing
Rolling element bearing
Fluid bearing
Q26. Which type of gear is used to transmit power between two non-parallel shafts?
Worm gear
Helical gear
Bevel gear
Spur gear
Q27. Which type of fluid flow is characterized by chaotic movement and irregular eddies?
None of the above
Laminar flow
Transitional flow
Turbulent flow
Q28. Which type of pump is commonly used in high-pressure applications?
Axial flow pump
Centrifugal pump
Positive displacement pump
Mixed flow pump
Q29. Which type of turbine is used in a gas turbine engine?
Impulse turbine
Both
Reaction turbine
None of the above