Answer Posted / jinal kania d

A Circuit breaker is a simple switch,it can make,break and carry current in normal,overload and short circuit condition.,while Contactor has two types:Auxilary and Power contactor,it can make,break and carry only in overload and normal condition.It has back up protection compulsary by HRC fuses.,While there is no need of back up for circuit breaker.

Pl. give me checklist for installation & commissioning of machine tool.

2346

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EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.

2065

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how power is generated,and transmitted to our home..pls explain briefly in simple words.

2309

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WHAT IS THE FUNCTION OF SHORT CIRCUIT MAINTENANCE CT

2502

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is the value of inductance depends upon the evalue of thitha in doubly excited machine?

1924

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how you taken aotitude test

2524

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How is the gain affected by the introduction of feedback in a control system.

1202

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What happen to generator if i have unbalanced load?

2153

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I am inpecting a 10kVA UPS what tests should i do and should i observe?

2268

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which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?

2233

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I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

2020

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Define peak overshoot.

1318

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What is the formula to calculate the size of Aluminium and copper cable?

1997

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hi all i like to know vat is power plot in control systems also i want to know abt latest trends in electrical & electronics

2004

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what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value

2240

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