Viscosity Interview Questions - 1 | Snaprecruit.com
Viscosity Interview Questions - 1 | Snaprecruit.com
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Viscosity interview questions part 1
Viscosity interview questions part 1
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Total Questions: 20
1. According to Newton’s law of viscosity, the maximum velocity of flow is at
A. Top of the tube
B. Bottom of the tube
C. Middle of the tube
D. It is same at all the places
Show Correct Answer
Correct Answer is :
Middle of the tube
2. The factor on which viscosity depends is
A. Area of contact of two adjacent layers
B. Velocity difference between two adjacent layers
C. The distance between two adjacent layers
D. All of the mentioned
Show Correct Answer
Correct Answer is :
All of the mentioned
3. The viscosity of a fluid is inversely proportional to the
A. Area of contact of two adjacent layers
B. Distance between two adjacent layers
C. Velocity difference between two adjacent layers
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Distance between two adjacent layers
4. The Newton’s law of viscosity is not applicable to
A. Turbulent flow
B. Laminar flow
C. Streamline flow
D. All of the mentioned
Show Correct Answer
Correct Answer is :
Turbulent flow
5. The absolute kinematic viscosity is the ratio of
A. Density to absolute viscosity
B. Absolute viscosity to density
C. Kinetic energy to absolute viscosity
D. Absolute viscosity to kinetic energy
Show Correct Answer
Correct Answer is :
Absolute viscosity to density
6. Viscosity means the flow of the liquid is resisted by ________
A. Itself
B. Other liquid
C. Water
D. Alcohol
Show Correct Answer
Correct Answer is :
Itself
7. The viscosity of an oil decrease when temperature ________
A. Decreases
B. Is constant
C. Increases
D. 100oC
Show Correct Answer
Correct Answer is :
Increases
8. The rate of change of the viscosity with raise in temperature is measured by an arbitrary scale called as _________
A. Arbitrary constant
B. Viscosity constant
C. Viscosity index
D. Arbitrary index
Show Correct Answer
Correct Answer is :
Viscosity index
9. Mathematically, viscosity index can be given by __________
A. { (L+U)/(L-H)}*100
B. { (L -U)/(L+H)}*100
C. { (L+U)/(L+H)}*100
D. { (L -U)/(L-H)}*100
Show Correct Answer
Correct Answer is :
{ (L -U)/(L-H)}*100
10. The viscosity of the oil changes rapidly with the change in temperature has_______
A. High V.I
B. Low V.I
C. Moderate V.I
D. Zero V.I
Show Correct Answer
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.
A. 100
B. 1000
C. 10000
D. 100000
Show Correct Answer
Correct Answer is :
100
12. If the viscosity must not be ________ to a liquid oil film between two moving liquid.
A. High
B. Low
C. Moderate
D. Zero
Show Correct Answer
Correct Answer is :
Low
13. Excessive friction takes place, when the viscosity is ________
A. Too high
B. Too low
C. Moderate
D. Zero
Show Correct Answer
Correct Answer is :
Too high
14. The viscosity of the lubricating oil must be sufficient to keep it in position.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
15. ________is used in machines operating at high pressure and slow speeds.
A. Kerosene
B. Diesel oil
C. Heavy oil
D. Crude oil
Show Correct Answer
Correct Answer is :
Heavy oil
16. For machines operating at the high speed and low pressure _______ are used.
A. Heavy oils
B. Light oils
C. Crude oils
D. Diesel oil
Show Correct Answer
Correct Answer is :
Light oils
17. Redwood viscometer no1 is used to find the viscosity of the _________ liquids.
A. High viscous
B. Low viscous
C. Moderate viscous
D. No viscous
Show Correct Answer
Correct Answer is :
Low viscous
18. What is the efflux of the redwood viscometer no2?
A. 2000
B. 20000
C. 100
D. 200
Show Correct Answer
Correct Answer is :
200
19. Test thermometer is one of the parts of the redwood viscometer.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
20. The oil cup is made up of _________
A. Brass
B. Copper
C. Silver
D. Chromium
Show Correct Answer
Correct Answer is :
Brass
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