Answer / qureshi majid ahmed

The dc motors are not much used in the industrry because we
need every time the commutator to convert internally
generated AC voltage into dc voltage.For large scale
industries we can not accomodate commutator in this range.So
even having robust characteristics,they are not preffered
for large machines

Answer / siva shankar

Presently AC supplly is going on thats y... if we keep the DC motor there we need some rectifiers

Answer / naeem anwar

mostly, industry uses an induction motors for constant
speed as required for your jobs just like paper mills,
variation in speed cause paper broken etc.
secondly, vfd(variable frequency drive )are made mostly to
control different parameters of AC motors.

Answer / apoorv

dc motors are not used because of commutation problems , and dc supply has to be given which require rectifiers at generating end and commutators cannot efficently convert ac generated vtg inside dc machine into output dc vtg.

Answer / yash sharma

if you are richy rich you can afford DC motor.simple

what is the use of interposed & reverse voltage transformer

2 Answers   Anjani Steels,

What is the formula to calculate the rating of power cable for three phase current.

0 Answers  

why the voltage and current in a long transmission line are called travelling wave?

0 Answers   UIU,

In brushless excitation system how generator field current is measure even if the slip rings are absent?

3 Answers   Adani,

How we calculate the spacing between the conductors in 11,33KV lines?

3 Answers   NHPC,

Under wat condition statcom operates as an inductor for the transmission line?

0 Answers  

what is reason in mv breaker the control supply voltage is dc not ac?

1 Answers  

how to convert 1 phase power to 3phase power by using induction motor. . . .

1 Answers   BK Anand,

the winding of Generator and Motor is star or in delta ? and why

0 Answers  

what is meant by leakage current of a capacitor?

1 Answers  

why we somewhere use ryb phase sequance, somewhere use uvw, and somewhere abc??

4 Answers  

What is the major differences between RCCB & ELCB? If we use ELCB of less sensitivity why does it trip often and can we control it from tripping?

1 Answers