Sir,
why generating power plant operating at above 0.9 lag?
detail explaination?
Answer / sanu chaudhary
armature current of alternator depends upon the power
factor of machine .AT THE UNITY POWER FACTOR armature
current is minimum ,armature current of machine will
increse for same power if power factor of machine is
lagging as well as leading so it is desired to run the
machine near the unity power factor for optimum utilisation
of capacity of machine .in the leadind power factor machine
take reactive power from the infinte bus or grid and
machine is under excitation so it may be the cause of
panelty from power corporation due to reaciving of reactive
power hence we operate the machine near .9 lagging power
factor
Is This Answer Correct ? | 8 Yes | 4 No |
why colour of electrical equipment( like transformer) is grey
when the motor was star position that is running ok but when the motor was delta it was tripped? why?
5 Answers Nimbus, SEL Manufacturing,
HOW DO WE COLLECT THE SOLAR ENERGY AND DESCRIBE THE METHODS TO CONVERT THE SOLAR ENERGY INTO ELECTRICAL ENERGY?
Why more than 2.5 MVA distribution transformers (secondary is 440V)are not used in india.
in elevator industries , how to calculate the required KVA for the elevator (elevator spec- 40A module , motor of 13.5KW, 20A)
1 Answers DLF, Tata Steel Limited,
What is the difference between phase, neutral wire and earth cable. if neutral is connected to ground, y we need earthing cable? what difference in hot and cold wire? do neutral wire carry current?
what is humming noise and wha is the reason to develop humming noise in a mv pannel ?
I have a transformer 3phase 11kv/410v and its name plate missing. now how can I judge its rated kva?
why high speed tripping relay is used in protection circuit why not normal relay
How to calculate the electrical load for a standard telecom BTS shelter and capacity of DG set required to cater to this load?
3 Answers Bhel, INDUS, Indus Towers,
In 2500kva transformer how much is the withstand High voltage power frequency between primary to secondary and earth? And secondary to primary and earth?
why the rating of a transformer in kva not in kw.