why dc exicitaion used in ac motor....?

Answer Posted / dipen

by giving the Dc excitation it will create imagenary
poles to lock the stator pole so that syn.motor run at
syn.speed.

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain the functioning of diode?

653


In EDO ACBs what is a purpose of closing coil and motor, what is the operation of these devices are they inetconnected. means if we give supply to motor and by BCS we charge Closing coil,what exact is operation is and how it charge a spring of ACB. Sir if anybody has an wiring diagram please send me the link to operate and EDO breaker.

1625


What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

1897


What is the Load Capacity of Panther conductor (0.2) and dog conductor (0.2) 

2315


What is the normal phase difference between the voltage and the no-load current in a transformer?

685






We have a distribution transformer of 750KVA/11kv/440v and an AVR (Servo Stabilizer) of 750KVA on the LT side of distribution transformer. Also we have an ACB of 1200A on the output of distribution transformer (that is on the input of AVR). We want to have an MCCB on the output of AVR. What should be the rating?

1626


for opening electrical shop, tips needed.

1387


what will happen if ac and dc supplies given

1650


can mini-curcuit supply MIL-tested transformer !

1618


Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..

1642


how braking & making capacity of circuit breaker are calculated?

1847


what is vtg limit of earth and neutral at transformer side?

1570


we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?

1471


Difference between transition and diffusion capacitance

2330


Explain what are inter-poles and why they are required in a dc machine.

623