Motion of a liquid in a volute casing of a centrifugal pump is an example of____________________?

Question: A Francis turbine is used when the available head of water is
[A].

0 to 25 m

[B].

25 m to 250 m

[C].

above 250 m

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit power of the wheel is
[A].

0.25 kW

[B].

0.75 kW

[C].

1.75 kW

[D].

3.75 kW

Answer: Option C

Explanation:

No answer description available for this question.

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.

Question: In an outward flow reaction turbine
[A].

the water flows parallel to the axis of the wheel

[B].

the water enters at the centre of the wheel and then flows towards the outer periphery of the wheel

[C].

the water enters the wheel at the outer periphery and then flows towards the centre of the wheel

[D].

the flow of water is partly radial and partly axial

Answer: Option B

Explanation:

No answer description available for this question.