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