Answer Posted / raju

Buchholz relay is used for oil transformer because it is a
gas actuated relay.

DG Earth Value?

2316

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The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current

2087

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When we need up only in o/p 440v, so why we use directly in 11kva in input?

1683

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what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks

1899

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Dyn1 transformer vector group testing how to do

1804

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What is the difference between isolators and electrical circuit breakers? What is bus-bar?

1154

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I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)

2135

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What is the function of the generator exciter?

1417

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how to calculate the battery AH

2756

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What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

2047

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what r the checklist while installing 500 kva transformer

2330

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What are the necessary components of the feedback control system?

1226

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What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

1718

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is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

5364

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Is it possible to measure the voltage of a battery from a single terminal?

1741

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