Engineering :: Fluid Mechanics and Solid Handling
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31. |
Poise (P) is the unit of dynamic viscosity and one Poise is equal to |
A. |
1 N.s/m2 |
B. |
1 lb/ft.hr |
C. |
1 g/cm.s |
D. |
1 kg/m.s. |
Answer: Option C
Explanation:
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32. |
Absolute viscosity expressed in poises is converted to the SI unit of viscosity by multiplication by |
Answer: Option D
Explanation:
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33. |
In converting from the poise to lb/ft.hr one multiplies by |
Answer: Option C
Explanation:
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34. |
To convert for the stoke to ft2/s one multiplies by |
A. |
1-Jan |
B. |
(30.48)2 |
C. |
(30.48)-2 |
D. |
144 |
Answer: Option C
Explanation:
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35. |
The numerical value of gc. Newtons law proportionality factor is |
A. |
32.174 lbm.ft/lbf.s2 |
B. |
9.806 kg.m/kgf.s2 |
C. |
1 kg.m/N.s2 |
D. |
any of these answers |
Answer: Option D
Explanation:
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36. |
For ? = 2.49 Poise sp.gr = 0.83 v in Stokes is |
Answer: Option C
Explanation:
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37. |
For v = 3 St and p = 0.80 g/cm3 in N.s/m2 is |
Answer: Option C
Explanation:
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38. |
The viscosity of a gas |
A. |
increases with increase in temperature |
B. |
decreases with increase in temperature |
C. |
remains unaffected with change in temperature |
D. |
is greater than the viscosity of a liquid |
Answer: Option A
Explanation:
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39. |
The viscosity of a liquid |
A. |
remains unaffected with change in temperature |
B. |
decreases with increase in temperature |
C. |
increases with increase in temperature |
D. |
is dependent on pressure only |
Answer: Option B
Explanation:
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40. |
The property of a fluid by virtue of which it offers resistance to shear is known as |
A. |
density |
B. |
surface tension |
C. |
viscosity |
D. |
vapor pressure |
Answer: Option C
Explanation:
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