Chemical Engineering - Fluid Mechanics

41. 

The ratio of wall drag to total drag in the Stoke's law range is

A. 0.5
B. 1
C. 1/3
D. 2/3

Answer: Option D

Explanation:

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42. 

Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg.

A. 1
B. 0.1
C. 0.01
D. 0.001

Answer: Option C

Explanation:

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43. 

A pitched-blade turbine draws __________ a straight blade turbine.

A. less power than
B. more power than
C. same power as
D. data insufficient to predict

Answer: Option A

Explanation:

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44. 

The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a

A. weir
B. pitot tube
C. Kennison nozzle
D. V-notch

Answer: Option B

Explanation:

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45. 

A centrifugal pump is called a turbine pump, if it is having a

A. turbine type impeller.
B. vaned diffusion casing.
C. rotating vaned volute.
D. none of these.

Answer: Option B

Explanation:

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