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Total Questions: 20
1. According to Newton’s law of viscosity, the maximum velocity of flow is at
Correct Answer is : Middle of the tube
2. The factor on which viscosity depends is
Correct Answer is : All of the mentioned
3. The viscosity of a fluid is inversely proportional to the
Correct Answer is : Distance between two adjacent layers
4. The Newton’s law of viscosity is not applicable to
Correct Answer is : Turbulent flow
5. The absolute kinematic viscosity is the ratio of
Correct Answer is : Absolute viscosity to density
6. Viscosity means the flow of the liquid is resisted by ________
Correct Answer is : Itself
7. The viscosity of an oil decrease when temperature ________
Correct Answer is : Increases
8. The rate of change of the viscosity with raise in temperature is measured by an arbitrary scale called as _________
Correct Answer is : Viscosity index
9. Mathematically, viscosity index can be given by __________
Correct Answer is : { (L -U)/(L-H)}*100
10. The viscosity of the oil changes rapidly with the change in temperature has_______
Correct Answer is : Zero V.I
11. Addition of linear polymers to the increases the V.I and oils with V.I higher than_______are prepared.
Correct Answer is : 100
12. If the viscosity must not be ________ to a liquid oil film between two moving liquid.
Correct Answer is : Low
13. Excessive friction takes place, when the viscosity is ________
Correct Answer is : Too high
14. The viscosity of the lubricating oil must be sufficient to keep it in position.
Correct Answer is : TRUE
15. ________is used in machines operating at high pressure and slow speeds.
Correct Answer is : Heavy oil
16. For machines operating at the high speed and low pressure _______ are used.
Correct Answer is : Light oils
17. Redwood viscometer no1 is used to find the viscosity of the _________ liquids.
Correct Answer is : Low viscous
18. What is the efflux of the redwood viscometer no2?
Correct Answer is : 200
19. Test thermometer is one of the parts of the redwood viscometer.
Correct Answer is : TRUE
20. The oil cup is made up of _________
Correct Answer is : Brass
