Answer Posted / raman jain

The oil used in Transformer is to provide Insulation and
cooling.
BDV value of oil should be more than 80 kV for Power
Transformers.

in star-delta tranformer,if the input of star connection is 400/7v 3 kva then what is the output of delta connection?

2071

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Explain Circuit Breaker Trip Characteristics in detail.

2095

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State Maximum Power Transfer theorem.

1202

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why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?

3102

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Is there chopping current in resistive circuit

1893

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Explain the operation principle, advantages and disadvantages of the following converters: a) A 12 pulse converter b) A Switch-mode inverter c) A thyristor inverter

1965

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I HAVE A 50A MCCB AS PER DESIGN LINE WIRE CONNECT UPWORD SIDE AND LOAD IS CONNECTED TO DOWNWARD SIDE TO THE MCCB.IF NOW ANY ONE CHANGE SUPPLY & LOAD(WISEVERSA) WHAT HAPPENS ? DOES MCCB OPERATION OR WORKING FUNCTION NORMAL IF YES THAN WHY THERE ARE MARKED LINE & LOAD ON MCCB.

2322

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Do closed loops systems require manual input?

1144

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How many sprinklers should be in one pipe line?

1908

---

what is reactive power?, why its measured in VA ? is it transient behavior of system?

2247

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Explain the operation of grid connected central solar inverter ?

1485

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What does ampere turns shows?

1063

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Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.

2088

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hi, in the event earth grounding is not available in a project, is there any other way to make the elcb work? fyi, i have an instant water heater (6.5kw) installed, however if there is grounding in the heating element inside the heater assembly, i will get grounded. thank you in advance to those who will answer my question.

1951

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What is deference between MCB & MCCB & ISOLATOR

2052

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