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- 1. Multiple Choice
The most important property of the lubricant is
density
viscosity
thermal conductivity
none of the above
- 2. Multiple Choice
The maximum pressure in the lubrication system is controlled by
oil pump
oil filter
valve relief
supply voltage
- 3. Multiple Choice
The lubricants commonly used in the automobiles are
animal oils
vegetable oils
synthetic oils
cooking oils
- 4. Multiple Choice
Mist lubrication system is mainly used in
four-stroke petrol engine
four-stroke diesel engine
two-stroke petrol engine
Wankle engine
- 5. Multiple Choice
Most commonly used lubrication system in automobiles is the
splash system
pressure system
petrol system
gravity system
- 6. Multiple Choice
Semi pressure system is a combination of splash and pressure systems.
True
False
- 7. Multiple Choice
____________ is the property of lubricating oil due to which the oil particles stick with the metal surfaces.
Oiliness
Pour point
Adhesiveness
None of the mentioned
- 8. Multiple Choice
Lubricating oil
Minimizes wear in moving parts
Helps in keeping the parts cool
Washes away and carries away dirt
All of the above
- 9. Multiple Choice
The lubricant in internal combustion is exposed to
high temperature
high pressure
low temperature
low pressure
- 10. Multiple Choice
Which one of the following is NOT the property of a good lubricant
Takes up the surface pressure between sliding parts
Becomes thicker after prolonged use
No change in viscosity due to variation in temperature
Reduces friction between machine parts
- 11. Multiple Choice
The friction is needed to be reduced because
will increase the consumption electricity
it will be reducing the excess heat generation
will increase the load
will increase the excess the heat generation
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