Answer Posted / surya
whenever in a.c. current pasing through an inductive cicuit
like motor,choke of tube light.it is taking more current as
per its actul current.due to this extra current device
taking more power(apparent power ) as per rated power(true
power)
now ,Power factor is the ratio of true power or watts to
apparent power or volt amps
it is alwas lagging.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
What is inverse definite minimum time lag relay? Where is it use?
why various test are performed on electrical panels & power cables before commissioning on site & what are these test???
When we need up only in o/p 440v, so why we use directly in 11kva in input?
why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?
write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.
Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.
What is miller crystal oscillator? Explain its operation?
How we can calculate the life of Lead acid battery
How 48-relay (incomplete sequence) functions?
how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.
What is cross over distortion? How it can be eliminated?
in 6.6 kv vaccum circuit breaker vaccum bottole vaccum capacity ????
what is effect of leading power facter on the system and billing
What is the general power consumption rating of CPU CRT type and Flat type, Monitor,Printer, projector, Scanner?
how does a liquid starter reduce the starting currents?