Answer / kannu

current and voltage transformers both are based principle
of as transformers.it used for step down the voltage and
current to measure the electrical energy .
There is a ratio to identity the CT and PT.

pt ratio :100/1 etc.....
ct ratio :100/5 etc....

what is the difference between online and offline UPS?

4 Answers   Prestige,

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How to calculate the cable size in sq. mm. when the load is given in KW?

3 Answers  

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Can we put 3 layers of cable tray while installing tray

1 Answers   NTPC, Siemens,

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operation of protection relay watchdog contact?

1 Answers   L&T,

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what is CT class? depending upon which it is classified?

3 Answers   Siemens,

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can we connect both delta and star to the transformer secondary and for what reason?

5 Answers   Power Grid,

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I have 10 amp MCB for my air conditioner of 1.5 ton capacity. When I connect the ac direct it is started running but when connected through stabliser the Mcb Get trip and air conditioner couldn't start.please confirm whether Mcb is required to be upgraded to 20 amp. There is no fault in ac and the stabliser. Please advice the reason of tripping the mcb when connected through the stabliser.

1 Answers  

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How to select busbar?

2 Answers  

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Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?

1 Answers  

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what is electric traction?

26 Answers   TCS, Volvo,

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Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?

1 Answers  

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corona happens more in summer or winter?

3 Answers   MAHINDRA,

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