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

0 Answers   PEI,

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What are the possible causes if load is not same on all the three phases

4 Answers  

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why we measure output of transformer in kva?

1 Answers  

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I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

0 Answers  

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How to reverse the direction of a DC motor ? By reversing the Armature wires or by reversing the field wires

2 Answers   KFC,

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I need bhel previous year quetion papers for electrical engineering department.I searched but i could not find out

0 Answers  

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what does the transformer connection symbol YNaod1 mean ?

3 Answers  

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When do you use a VFD motor?

3 Answers  

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how to calculate lux level in out door (yard lighting) please expalin with a example

1 Answers   IVRCL,

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How much current in 100 kva Transformer HT & LT side

1 Answers  

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why is one voltage transformers (instead of three ) installed at the entrence of the incoming line in a substation.

2 Answers  

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why we are using Load factor?

0 Answers  

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