If Re is the Renold's number, the coefficient of friction for laminar flow is

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If R_e is the Renold's number, the coefficient of friction for laminar flow is
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A.
B.
C.
D.

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2. A cylinder 3 m in diameter and 4 m long retains water one side as shown in the below figure. If the weight of the cylinder is 2000 kgf, the vertical reaction at A is
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A. 14,137 kgf
B. 5,863 kgf
C. 20,000 kgf
D. 18,000 kgf.

3. In pipe lines, a surge tank is provided
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A. to relieve the pressure due to water hammer
B. to provide additional water head
C. to overflow the pipe line when suddenly closed
D. to remove the frictional loss in pipe.

5. Barometres are used to measure
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A. pressure in water channels, pipes etc.
B. difference in pressure at two points
C. atmospheric pressure
D. very low pressure
E. very high pressure.

7. Total head of a liquid particle in motion is the sum of
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A. potential head and kinetic head
B. kinetic head and pressure head
C. potential head and pressure head
D. potential head, kinetic head and pressure head.

10. The continuity equation
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A. expresses the relationship between work and energy
B. relates the momentum per unit volume between two points on a stream line
C. relates mass rate of flow along a stream line
D. requires that Newton's second law of motion be satisfied at every point in fluid.

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