why 3 phase motors are preferable over single phase motors ?

Answer Posted / gunasekaran

3phase motor less noise than single phase motor why because
single phase motor always receiving pulsating field but
3phase not like that and then speed torque characteristic
also good for 3phase motor. Resultant flux in the single
phase is zero so it is not self starting but 3phase motor
not like that

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

1104


Define open loop control system.

686


when we have to purchase the transformer by own i.e how much load will preferred HT connection?

1201


If breaker is undefined position, first step to do.

1795


is IS says that neutral should be brought to switch box. and this one is a recomended practice

1435






i need some project topics along with circuit diagram in the electrical adnd electronics engg and also give ome website regarding projects.my mail id is thenmozhi2k7@gmail.com .please help me.

1453


i am gng to visa interview this july i have 4 backlogs gre 1010,toefl 75,pls give me the tips pls pls

1670


A power transformer 4MVA/11KV/0.415Kv has been out of use in 12years. what maintenance actions/test need to be carried out before energizing.

923


what is the main difference between power devices and signal devices

1701


i wasted one year for the job after completed my btech what can i say about 1year time in interview

1600


The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.

1496


what is the reqirred voltage in HT motor to get full RPM on no load test?

1569


In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.

1143


one electromagnet is called

1432


What is lifting power for 1 wb/m2 and 1 A magnet?

1699