Mechanical Engineering - Hydraulics and Fluid Mechanics

11. 

The divergent portion of a venturimeter is made longer than convergent portion in order to

A. avoid the tendency of breaking away the stream of liquid
B. to minimise frictional losses
C. both (a) and (b)
D. none of these

Answer: Option C

Explanation:

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12. 

In a venturiflume, the flow takes place at

A. atmospheric pressure
B. gauge pressure
C. absolute pressure
D. none of these

Answer: Option A

Explanation:

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13. 

The discharge in an open channel corresponding to critical depth is

A. zero
B. minimum
C. maximum

Answer: Option C

Explanation:

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14. 

The pressure of liquid at throat in a venturimeter is __________ than that at inlet.

A. higher
B. lower

Answer: Option B

Explanation:

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15. 

A fluid whose viscosity changes with the rate of deformation or shear strain is known as non-newtonian fluid.

A. True
B. False

Answer: Option A

Explanation:

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