Answer / ashok

An electronins ckt which controls the speed of AC/DC motors

Answer / vinay

drive mean a mechanical device to do the specific task
drives are ac drives and cd drives the drive workds on ac is called ac drive in dc called dc drive.

Answer / abhishek goyal

Circuit made of electrical (choke,power cable)and electronic
(SCR,IGBT)to control the speed of AC/DC MOTOR. it can be
control voltage, current, frequency etc.

WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

0 Answers   TCS,

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Why is it that North America uses 60 hz frequency while Europe uses 50 hz?

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how to synchronize 4 nos. of diesel generator sets of different capacity (kva)?

7 Answers   Bhel,

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In D O l starter motor starts as a star connected ,then in star delta starter also motor initially starts as star how come star delta is preferred from dol

2 Answers  

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when power transformer is flashed which gas is produce in side?

5 Answers  

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in pf lagging means current decrease by increasing voltage is correct or not ? reason ?

3 Answers  

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hi i m going to attend bhel interview on 22nd sep 2008 for ET(electrical engineering).pls guide me how to prepare for the interview.i am a fresher.

1 Answers   Bhel,

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the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.

6 Answers  

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What is UPS?

14 Answers   HSL,

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why should series motor be started with load and shunt motor should be started without load??????

7 Answers  

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what is difference between earhing and neutral

2 Answers  

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How to make two bulbs glow Alternatively?

2 Answers  

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