Answer / p.jaya senthil nathan

synchronous can run in lag lead and unity power factor but
induction motor run only in lagging power factor.

Answer / arpit

synchronous motor is not self starting while induction motor is self starting...

Answer / arun

THERE R MANY DIFFERENCE IN SYNCHRONOUS AND INDUCTION M/C
1)IND M/C IS SELF STARTING E.G.3 PH INDUTION MOTOR
BUT SYNCHRONOUS M/C NOT.
2)SYNCHRONOUS M/C RUNS ON SYNCHRONOUS SPEED WHILE IND. M/C LESS THAN SYN SPEED.
3)SYNCHRONOUS M/C CAN WORK ON LEADING AND LAGGING BOTH BUT INDUTION M/C ALWASY RUNS ON LAGGING PF.
4)EFFICINCY AND COST BOTH OF SYNCHRONOUS M/C IS MORE THAN INDUCTION M/C OF SAME RATING.
5)INDUCTION M/C IS SINGLY EXCITED BUT SYCHRONOUS M/C (ONLY MOTOR NOT GENERATOR) IS DOUBLY EXCITED .

Answer / k.prakashchandra

Synch motor requires DC excitation

Answer / gogarlatatarao

Forget about slip first of all..
In synchronous motor the stator and room are magnetically locked, means production of exact opposite pole on room with respect to stator are produced.
Stator speed=rotor speed


But in case of indication motor it works on induction principle..
I.e to rotating rotor same poles will create on both stator and rotor. Thus stator opposite the rotor thus it will starts to rotating.
Stator speed =/>/< rotor speed. Based on application

In Fluorescent tube there is a writing like 6500k . what this 6500k represents?

4 Answers  

In india, according to trade theory above 5 HP motor reqired star delta starter. But we R connect 11 KV motor with 14MW in Direct to line ( With VCB starter combination) Can U Guess, How it is possible ?????

0 Answers   Equate,

give types of Air conditioners commonly used &its use?

5 Answers  

how to read AWG n how to convert AWG reading into mm?

1 Answers  

hello, I need to know exactly what happen in the motor while it is connected to the (star/delta) starter, mechanical and electrical. Thaks for answering

3 Answers  

How i can identify the 220V and 110V power supply equipment? No tag number.

4 Answers  

WHAT SHOULD BE THE RATING OF generator required to run a pump motor of 45 Kw.

1 Answers   Jauss Polymers,

Application of statically induced emf

0 Answers  

What is SF6 Circuit Breaker?

2 Answers   Amdocs,

What is the resistance to be connected for supplying the load of 20mV,1kohm from 20mV supply using rectifier.

1 Answers   Anna University,

why CT out put is 5 what ever the primary current.

2 Answers  

what is difference between neutral and ground wire?

2 Answers   TCS,