Dc motor starting, Electrical Engineering

Assignment Help:

DC Motor Starting

When voltage is applied to the armature of a dcmotorwith the rotor stationary, no emf is generated and the armature current is limited only by the internal armature resistance of the machine. So, to limit the starting current to the value that the motor can commutate successfully, all except very small dc motors are started with variable external resistance in series with their armatures. This starting resistance is cut out manually or automatically as the motor comes up to speed.


Related Discussions:- Dc motor starting

1-phase full bridge inverter will rl load , 1- Phase Full  Bridge  inver...

1- Phase Full  Bridge  inverter will RL Load For a  resistive load R the load  current  wave form  will be  identical with load  voltage wave form  and feedback  diodes will

Find the total current and total resistance, For the circuit in figure, fin...

For the circuit in figure, find: a)  Total resistance b)  Total current c)  Current flow through resistor 6Ω and 4Ω

Designated consumers - features of energy conservation, Designated Consumer...

Designated Consumers - Features of Energy Conservation The Act gives the list of designated consumers, which involves the energy intensive industries, Railways, Port Trust, Tr

Sod output - serial input output ports , SOD Output Serial output data ...

SOD Output Serial output data  single  bit can be sent  out through this pin using SIM  command  discussed in details in chapter8.

Automatic irrigation system on running solar power b, how to upload the pro...

how to upload the program on proteus soft ware by using personal computer?

Determine the mechanism of generation of the voltage, (a) Identify the semi...

(a) Identify the semiconductor type in the above diagram. (b) Explain the mechanism of generation of the voltage V AB in the above diagram. (c) An experimental setup like th

Emf, State and explain three factors upon which the induced electromotive f...

State and explain three factors upon which the induced electromotive force depends

Help , What''s hysteresis ?

What''s hysteresis ?

Ac waveform, which ckt. Or components using for irregular ac sine wave ...

which ckt. Or components using for irregular ac sine wave change into pure sine wave.......

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd