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 CBCT ,why and whereit is used?

2 Answers  

L.A. (Lightening Arrester) is located at a place from where transmission line enters the transmitting substation. So L.A. (Lightening Arrester) is the first equipments which has to encounter with lightening, high voltage surges and switching surges. It has to absorb energy of lightening, high voltage surges, and switching surges. L.A. (Lightening Arrester) is made up of layers of semiconductors. If these layers can not tolerate energy released by lightening, high voltage surges, and switching surges the L.A. (Lightening Arrester) blasts.

0 Answers  

Double Busbar Scheme for outdoor switch yard system (132kv) step up power plant Hi friends 1. in this system both busbars energized all the time. 2. what is the meaning of main BB and transfer BB, 3. step up transformer connect main bus bar all the time or both BB connected through DS switch . 4.bus sectionalization means ? thank you.

1 Answers   ABC, Gael,

125Kva Dg can take up how much amphere load.

7 Answers   Indian Railways,

Will a load of 15A work if we connect it between one phase and earth?

4 Answers  

What is the simplest formula to calculate the rotor diameter of a synchronous generator?

0 Answers   PEI,

voltmeter kya hota hy ?

2 Answers  

HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?

0 Answers   Siemens,

why dimmerstate always connected in star connection? what will happen if it connected in delta?

0 Answers  

Actually I have a doubt on neutral and earth.we use Ac power without taking neutral by connecting to earth,but at that time does it affects on efficiency of any electrical components or no? If yes how?

0 Answers  

What is DC power factor??

2 Answers   HCL,

Can clean earth cable be considered as low current cable

0 Answers