Answer Posted / hemant

WHEN CLOUDS STRIKE THEY PRODUCE -VE CHARGE ,& FOR DISCHARGE THEY NEED THE ZERO POTENTIAL AT EARTH.IN TELECOM WE R GROUNDING THE -VE TERMINAL OF SUPPLY TO MAKE IT ZERO POTENTIAL .IF WE GROUND THE +VE TERMINAL THEN ALL THE EQUIPMENT WILL DAMAGE OR FIRED BECAUSE CLOUD WILL CHOOSE LOW RESISTANCE
+VE CHARGED ANTENAS.THAT IS THE REASON WE USE -48V.

why we use Test Terminal Block in 11 KV and 33 KV electrical panels.

1343

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sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.

2910

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WHAT IS THE FAULT WHEN 100HP TURBINE MOTOR TRIPS, LIST THE FAULTS AND ITS TRABULESHOOTING TIPS.. MY AUTO TARNSFORMER STARTER TRIPS

2051

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HI....HOW CAN BE MESARED THE VALVE OF NEUTRAL GROUND RESISTOR WHIC IS LOCATED AT SWICHGEAR ON GENERATOR SIDE....

2052

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how to test reverse power trip?

4439

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WHY THE DIMENSION OF TWO SAME RATED MACHINE IS DIFFERENT ?

2122

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In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring

1923

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An active element is one which a. Supplies energy b. Absorbs energy c. Supplies energy and convert energy from one form to another

2030

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What is the Diff. btw Manule Pull Station & Manule Abort Station Switches used in FM200 System??

1825

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what are safety measures in /control in diesal engine/ explain them?

1747

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What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.

2156

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one electromagnet is called

1879

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What happens to voltage when current through the inductor is constant?

1103

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can i connect REF and Differencial relay in 1 CT core for transformer protection?

1892

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how solar power plant energy meter multiplication factor

2059

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