Answer / t.suganya

NO

Why starter?
When DC Motor is suddenly connected to a supply source,
it creates stresses on the armature and supply system.
Since at standstill the armature is not developing any back
e.m.f, so the more current than the rated current
and this will cause damage to the motor.

What the starter do ?

A Motor Starter is used for the smooth starting of a motor.
It consists mainly of a variable resistance placed in
series with the armature.
The purpose of this resistance is to restrict the armature
current to a safe value for starting and accelerating.

The other uses of using a Motor Starter is
· To disconnect the motor in case of an overload
· To disconnect the motor when the supply voltage fails
· To disconnect the motor when the field current is reduced
beyond limit. 

Answer / vignesh

guys we can start the dc motor without starter by using no of resistors in series depending on the rated current

Answer / senthilnaathan

if the starter is based on increase in resistance can we include some series resistances so as to control the current flow..??
which inturn acts as a starter here??
can this be possible??

Answer / mallikarjuna chowdary

dc mototr doesnt require starter
high starting torques
carbon brushes require to control current

Answer / guest

yes

Answer / guest

No

Answer / thavam

DC motor starting current=starting voltage
for Ex:220 volt= 220 amps
because current limiting used for starters

Answer / abhishek pandey

without starter we do not start DC Motor

Answer / nakkeeran

yes..without using the starter ..surely we can run the dc
motor.........

How do you select a cable size(cu&Al)for a particular load?

2 Answers  

if we convert kw into kva,which one formula use by us,pls tell me?

19 Answers   ABB, AEC, BGH,

2.5mva transformer is installed in our company with oltc but it is not working in auto mode ,it is operative in manual mode control wiring is done how can i rectify it?

5 Answers   Imdaad,

what is working of communitator in a dc generator?

3 Answers  

IF TVM OF TRANSFORMER SHOWS POWER FACTOR ON 33 KV SIDE AS 0.97 LAGGING AND ON 132 KV SIDE IS 0.75 LEADING.IS THIS CORRECT.WHERE IS PROBLEM.

0 Answers  

1kva = kw ?

6 Answers  

Why effective AC resistance is more than DC resistance of a transmission line?

9 Answers   HCL, ONGC,

When batteries are connected in series the voltage increases but the current remains unchanged, how can this be? When you consider ohm's law. i.e. If voltage increases, current increases, providing resistance remains the same.

10 Answers  

electromechanical relay type identification example : type=tjmh t-stants for j- m- h-

0 Answers  

power requirement of an l.e.d?

2 Answers  

Current Transformer's star point must face the protected object for the relay operation?

2 Answers   Siemens,

How will you calaculate the Ct ratio based on connected load 500KVA,and 11KV supply ?

3 Answers