Answer Posted / nithi
In the power system most of the loads are induction motor
(nearly about 60%).so,apply this question for induction
motor.
For rated voltage,
below rated freq.: speed variation,high intake
current,over heating,insulation failure,core
saturation,harmonics production.
above rated freq.:drastic reduction in torque
production,speed variation.
so,frequency should be maintained constant.
Is This Answer Correct ? | 8 Yes | 5 No |
Post New Answer View All Answers
how to find motors H.P. whout any rating? (only give you a motor and multimeter)
ELECTRICAL ENGINEER TEST IN FEWA ANY ONE HAVE KNOWLEDGE ABOUT THIS?????????
What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6.6 kv, 372amp, 992 rpm GE motor.
WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM USED FOR RURAL ELECTRIFICATION?
What is an Air COmpressor
Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet
how does WTI work ?
Difference between ac parallel circuit and ac series circuit?
The power factor of the fixed load is 0.8, now the p.f is varying from 0.8 to 0.5.
what is vA rating and class of a ct.
What will happened if the neutral of secondary of Xformer ( Star point) Note it's above KVA rated Xformer
What is the technical difference between On delay timer and a Star delta timer?
What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?
Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?
hi can anyone pls tell me the eee interview core questions asked in l&t