MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Engine overheating may be due to: |
| A. | open thermostat |
| B. | excess coolant |
| C. | stuck radiator pressure cap |
| D. | broken fan belt |
| Answer» E. | |
| 2. |
Piston rings are usually made of |
| A. | Steel |
| B. | Cast iron |
| C. | Aluminium |
| D. | Babbit |
| Answer» C. Aluminium | |
| 3. |
Baffles are provided on |
| A. | Two stroke engines only |
| B. | Air cooled engines only |
| C. | Slow speed engines only |
| D. | Diesel engines only |
| Answer» C. Slow speed engines only | |
| 4. |
In an engine, which of the following is an advantage of the liquid cooling system, |
| A. | Even cooling |
| B. | Power absorbed by the pump is considerable |
| C. | Very cheap |
| D. | Dependent only on water supply |
| Answer» B. Power absorbed by the pump is considerable | |
| 5. |
Admittance of oil between two surfaces having relative motion is called: |
| A. | lubrication |
| B. | viscosity |
| C. | coalescence |
| D. | turbidity |
| Answer» B. viscosity | |
| 6. |
Detergents are oil additives used to |
| A. | reduce viscosity |
| B. | increase fire point |
| C. | prevent sludge formation |
| D. | prevent foaming |
| Answer» D. prevent foaming | |
| 7. |
Forced feed lubrication system means that oil is delivered to the engine by |
| A. | Gravity |
| B. | Pressure created by oil pump |
| C. | Splashing of the crank shaft |
| D. | None of the above |
| Answer» C. Splashing of the crank shaft | |
| 8. |
In two-stroke engines, the type of lubrication system employed in the crankcase is the: |
| A. | mist lubrication system |
| B. | wet sump lubrication system |
| C. | dry sump lubrication system |
| D. | splash lubrication system |
| Answer» B. wet sump lubrication system | |
| 9. |
If the oil viscosity increases, then the wear loss _______ |
| A. | remains the same |
| B. | becomes zero |
| C. | decreases |
| D. | increases |
| Answer» D. increases | |
| 10. |
In a multi-cylinder heavy-duty engine, mainly _______ lubrication system is used. |
| A. | pressure feed |
| B. | splash and wet sump |
| C. | splash |
| D. | scoop feed |
| Answer» B. splash and wet sump | |
| 11. |
In an IC engine, boundary lubrication is likely to occur between surfaces with relative velocity during: |
| A. | starting and stopping |
| B. | maximum power condition |
| C. | constant speed operation |
| D. | idling |
| Answer» B. maximum power condition | |
| 12. |
_______ lubrication technique is used for lubrication of the cylinder of a scooter engine. |
| A. | Petroil |
| B. | Splash |
| C. | Gravity feed |
| D. | Forced feed |
| Answer» B. Splash | |
| 13. |
In an IC engine, the type of lubrication system used for the bearing is mainly: |
| A. | boundary |
| B. | mixed-film |
| C. | hydrodynamic |
| D. | static |
| Answer» D. static | |
| 14. |
Piston compression rings are made of which one of the following? |
| A. | Cast iron |
| B. | Bronze |
| C. | Aluminium |
| D. | White metal |
| Answer» B. Bronze | |