﻿ Water falls from a height of 60 m at the rate of 15 kg /s to operate a turbine. The losses due to frictional  from Physics Work, Energy and Power Class 11 Manipur Board

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Water falls from a height of 60 m at the rate of 15 kg /s to operate a turbine. The losses due to frictional

• 8.1 kW

• 10.2 kW

• 12.3 kW

• 7.0 kW

A.

8.1 kW

Power generated by the turbine is,

Pgenerated = Pinput  x 90/100

Power generated by the turbine is,

Pgenerated = Pinput  x 90/100

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What is watt?

SI unit of power is Watt.
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Is work a scalar or a vector quantity?

Work is dot product of two vectors. i.e. .

And dot product is a scalar quantity. Therefore, work is a scalar quantity.
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What are different units of energy?

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(ii) Erg
(iii) eV
(iv) KWh
(v) Calorie.

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Define watt.

Power is said to be one watt if one joule of work is done in one second.
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