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