Answer / chin2

we can add a resistance to the field winding to control the
speed of the motor

Answer / abhaynath

Using chopper circuit we can control the dc motor

Answer / vijayakrishna

somany methods are used
field control,armature resistence

field control method: we add a veriable resistence in
series with fielled winding to control the speed of the
motor.
armature control:we add a veriable resistence in series
with armature winding to control the speed of the motor.

Answer / chandan adhikary

Pulse width modulation is the best way of speed control of dc motor..

in a distribution board,if we have a load and we have selected a cable after making all calcs (Deratings and V.D , ect...) the cable we have selected was 10mm.sq. now, shall the internal cable inside the switchboard should be 10 mm.sq Like the external or it can be Less???? if somebody have an specs or information he can help D:

1 Answers  

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what is the basic difference between fan and home motor if both have single phase induction motor?

4 Answers   Engineers India Limited,

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Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

0 Answers  

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why ct secondary side shortlink provided? its open what will happen?while running ?

2 Answers   Essar,

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hello every one, what is the difference between the Kvar and farads, Rating on Power capacitor is for eg: x kvar, and normal capacitor is eg: x farads. what is the relation between these two?

3 Answers  

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What is the deffrence between Siemens S7-300 & S7-400 PLC?

4 Answers   ADC,

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How we do the maintenance of Servo motor, even we cant open it?

0 Answers   ITC Infotech,

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What is the acceptable earth resistance for Commissioning the Transformer?

6 Answers   HSL,

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Dear all, kindly give me the details of leectrical design engineer course details/institute in hyderabad /any where in india.

1 Answers   Reliance,

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types of transformers?

1 Answers   Torrent Power,

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how brushed dc motor operating ?

0 Answers  

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What range of speed can you get with the armature control method of speed control of d.c. Shunt motor?

0 Answers  

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