Answer Posted / rajendran.m

1.0000(unity power pactor)

What is rotary phase converter?

623

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i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test

1378

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On a 6 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 42 AH). What Shall be the current rating of DC MCB ?

2117

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how to protect motor in dol starter having capacity of 30 hp.40 hp?

2765

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What is the formula to calculate distribution transformer De-rating on iron losses basis

1355

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I want to know the 'Test voltage' for Tandelta testing of 3.3 / 6.6 / 11 KV Motors. Please explain

1785

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what is the function and use of cable differential protection relay?

2394

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1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to confirm its base capacity?

1541

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how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???

1616

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how to find the multiplication factor for digital energy meter and analog energy meter

1766

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Why the output of OP-AMP is always less than Vcc?

1466

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either water sensor or flow meter,how we observe the water level, f any other equipment are in market ?

1423

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what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?

1661

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What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?

1412

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in control scheme dc logic wiring commonly using negative loop,what is the reason?if we use positive looping what will happen?

1858

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