Hydraulic Machines

In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.

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Question: In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.
[A].

Agree

[B].

Disagree

Answer: Option B

Explanation:

No answer description available for this question.

If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

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Question: If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by
[A].

H = Hg/hf

[B].

H = Hg x hf

[C].

H = Hg + hf

[D].

H = Hg – hf

Answer: Option D

Explanation:

No answer description available for this question.

In an impulse turbine, the jet of water impinges on the bucket with a low velocity and after flowing over the vanes, leaves with a high velocity.

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Question: In an impulse turbine, the jet of water impinges on the bucket with a low velocity and after flowing over the vanes, leaves with a high velocity.
[A].

True

[B].

False

Answer: Option B

Explanation:

No answer description available for this question.

Which of the following statement is correct as regard to water wheels?

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Question: Which of the following statement is correct as regard to water wheels?
[A].

They have slow speeds.

[B].

They are suitable even for low water heads.

[C].

They give constant efficiency, even if the discharge is not constant

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.