Fluid Mechanics

For laminar flow in circular pipes, the Darcy’s friction factor f is equal to_________________?

Byadmin January 17, 2019August 12, 2021

For laminar flow in circular pipes, the Darcy’s friction factor f is equal to_________________?

A. 16/Re
B. 32/ Re
C. 64/ Re
D. none of the above where R,, is Reynolds number

Fluid Mechanics

Two pipe systems can be said to be equivalent, when the following quantities are same__________________?

Two pipe systems can be said to be equivalent, when the following quantities are same__________________?

A. friction loss and flow
B. length and diameter
C. flow and length
D. friction factor and diameter
E. velocity and diameter

Read More Two pipe systems can be said to be equivalent, when the following quantities are same__________________?
CHEMICAL ENGINEERING | Fluid Mechanics

A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double

Question: A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double
[A].

head
[B].
discharge
[C].
efficiency
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double
Fluid Mechanics

The major loss of energy in long pipes is due to_______________?

The major loss of energy in long pipes is due to_______________?

A. sudden enlargement
B. sudden contraction
C. gradual contraction or enlargement
D. friction

Read More The major loss of energy in long pipes is due to_______________?
Fluid Mechanics

Manometer is used to measure__________________?

Manometer is used to measure__________________?

A. pressure in pipes, channels etc
B. atmospheric pressure
C. very low pressure
D. difference of pressure between two points
E. velocity

Read More Manometer is used to measure__________________?
CHEMICAL ENGINEERING | Fluid Mechanics

A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity

Question: A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity
[A].

same as that of A.
[B].
one fourth as that of A.
[C].
twice as that of A.
[D].
four times as that of A.

Answer: Option B

Explanation:

No answer description available for this question.

Read More A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity
CHEMICAL ENGINEERING | Fluid Mechanics

In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the __________ efficiency.

Question: In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the __________ efficiency.
[A].

manometric
[B].
mechanical
[C].
volumetric
[D].
overall

Answer: Option A

Explanation:

No answer description available for this question.

Read More In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the __________ efficiency.

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