Answer Posted / rohit singh

Because in the case of Generator if we choose the 100%
protection then the protection system cost more than the
generator cost. thats why we will choose 95% of protection.

In India generally 92-93% protection is used whereas inother
country it is 95-96%.

what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?

2963

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When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?

1960

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What are test signals and their significance?

1171

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Define rise time.

1176

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

2144

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What is earth?

2503

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what is the need to express current and voltage in rms value? rms value is also called as effective value,what is effective value?

2022

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SIR, GIVE ME OPGW SAG CALCULATION FORMULA I AM DAE ELECTRICAL. THANKS

6952

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what is residuel magnetism. and how order lead acid batteries for 24 volt. emergency lighting system.

2060

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A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.

2659

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Why use in ht motore

1753

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how point on wave controller works.

2652

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what is reverse power relay brief explanation and in b/w where it is connected

2089

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what is meant by flywheel and its role in retardation test

2470

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Distribution transformer we provided 2 separate earthing pit for Body and 2 separate earthing pit for neutral,we can not connect separate body earthing pit to other earthing pit but we do metal glanding in secondary side cable termination in both side, transformer and PCC panel (LT Panel), is this safe for transformer and other equipment?

1773

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