Pitot tube is used for measurement of_________________?

Question: Erosion and pits formation on the impeller of a centrifugal pump may be due to
[A].

cavitation.

[B].

low speed of impeller.

[C].

its operation with delivery valve closed for considerable time after starting the pump.

[D].

off centering of pump with motor.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
[A].

increase

[B].

decrease

[C].

remain same

[D].

be quadrupled

Answer: Option A

Explanation:

No answer description available for this question.

Question: For steady ideal fluid flow, the Bernoulli’s equation states that the
[A].

velocity is constant along a stream line.

[B].

energy is constant throughout the fluid

[C].

energy is constant along a stream line, but may vary across stream lines

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: With increase in the temperature, viscosity of a liquid
[A].

increases

[B].

decreases

[C].

remains constant

[D].

may increase or decrease; depends on the liquid

Answer: Option B

Explanation:

No answer description available for this question.