# Mohsan islam

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• #12219

dear

yes , The rating of generator is in kva not in kw.

if load is 5MW, then generator will produce power according to load. It does not produce rated power all the time. some power lost as reactive power in kvar and active power is used in kw which may be 5MW, 6MW,15MW etc upto 20MW

in reply to: transformer losses #12140

i want

to calcute my home electricity load and also want to know illuminus calclations

formuly any bdy hlp me plz?

Hello Dear mhrnaseer,

ammeter.

Multiply load current to standard voltages which are usually

Illumination is defined as “the emitted luminous flux per

unit area is called illumination”.

Mathematically

E=Φ/A    (lux).

Illumination at any surface can be calculated by two laws:

1) inverse square law

2) Lambert’s law

1)inverse square law tells that the illumination of a

surface is inversely proportional to the square

of  the distance of the surface

from the source.

i.e   E «1/d^2

2) Lambert’s law tells that illumination is directly

proportional to cosine of the angle made by the normal to the illuminated

surface with the direction of the incident flux.

i.e E  « I cosΘ   where I is  luminous intensity.

combining the both laws we get

E «(I/d^2)cosΘ

Or

E=(I/d^2)cosΘ

in reply to: transformer losses #12108

Transformer losses are found by short circuit test and open circuit test.

Viewing 3 posts - 1 through 3 (of 3 total)