Mechanical Engineering - Hydraulics and Fluid Mechanics

41. 

The shear stress-strain graph for a newtonian fluid is a

A. straight line
B. parabolic curve
C. hyperbolic curve
D. elliptical

Answer: Option A

Explanation:

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42. 

If a pitot tube is placed with its nose upstream, downstream or sideways, the reading will be the same in every case.

A. True
B. False

Answer: Option B

Explanation:

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43. 

A flow in which each liquid particle does not have a definite path and the paths of individual particles also cross each other, is called turbulent flow.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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44. 

A flow in which the viscosity of fluid is dominating over the inertia force is called

A. steady flow
B. unsteady flow
C. laminar flow
D. turbulent flow

Answer: Option C

Explanation:

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45. 

An air vessel is provided at the summit in a syphon to

A. avoid interruption in the flow
B. increase discharge
C. increase velocity
D. maintain pressure difference

Answer: Option A

Explanation:

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