Answer / balamurugan

online ups no change over time (0 ms)from EB supply to Battery supply. offline ups some mls time to change over from EB supply to battery supply (more or less 3 ms )

Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

0 Answers  

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How to decide and select the different earthing wire size for the different types of earthing

0 Answers   Suzlon,

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How to run 1ph motor(230 VOLTS its full load amps is 4.5 ampa))with 480 volts main(we didn hav neutral)Thn we go for step down transformer.Our load 10 amps,so we conisder this amps in primary are secondary side

1 Answers  

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one cable insulation resistance 200 mega ohm. how find 250 meter cable resistance.

2 Answers   NTPC,

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What is the need of black rock stones under the transformer yard?

5 Answers   TNEB Tamil Nadu Electricity Board,

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IN MY INDUSTRIES 125 HP MOTOR USED FOR THAT ONLOAD AMPS UP TO 280 SO CAN I USE ONE LOWER KVA DG SET WITH STEP UP TRANSFORMERS THAT MEANS WITH LOW POWER INPUT TO GET CONSTANT HIGH POWER OUTPUT EG:125KVA DG SET = 250 KVA STEP UP TRANSFORMERS

1 Answers  

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What is WLD System????

3 Answers   Emerson, HCL, Honeywell, Tata Communications,

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what is multiplying factor of a energy meter connected with a CT ratio of 600/5 and voltage at 415 volts.

1 Answers  

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What is auto transformer?

7 Answers   L&T,

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Why is the air gap between the pole pieces and the armature kept very small?

0 Answers  

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What is the function of neutral CT in transformer? Turn ratio of typical CT for 2MVA transformer ? or relation between full load current of transformer and neutral CT ?

1 Answers   Electrical Inspectorate,

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Hello sir i m student of gtu .what is idp.

0 Answers  

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