Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / vincent omwikha
.To control the starting current of the motor thus avoiding
overheating of the windings.
.To avoid undervoltage hence tripping of other equipments
on the same line i.e for big motors
.Able to vary the speed of the motor
.Provides different starting/stopping points of the same
motor.
.Provides control measures of overcurrent,earthfault i.e
overload relays,circuit breakers,fuses
.Provides power isolation mechanism when one works on the
motor i.e fuses, breakers, isolators
.Able to know the current taken by the motor i.e ammeters
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
Block diagram of Power line communication?
what is breathing?
defination of lines
1 hp is equal to how much watt?
what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.
how can we save enegry by using VFD for Resiprocating Air compressor which is having more unloading running hours
What is the effect of solar radiation on the design of an Isolated Phase Busduct?
Why front mounted CT polarities are always towards breaker?
How to Calculate KA Rating of Main LT Panel
What is line resistance of cable & how it can be measured ?
what is mean by Digital Logic Meter (DLM)
How is the resonant peak, resonant frequency, and bandwidth determined from nichols chart?
Pl. brief about break-down maintenance of machine tool.
1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?
what is the string efficiency
