Answer / praveen

for example take a transistor it needs more 0.7v(for
germanium) to switch ON so this voltage is called break down
voltage.

Answer / madhu

it is not the voltage needed by the device, but it is the
voltage after which the device cant work.

we can say that as the voltage after which the device
efficiency decreases rapidly.

Answer / jessy

A level of voltage at which breakdown/malfunctioning takes
place in a device or anything to which it is applied.

I am a possesor of c licence from 1993. I forgot to renew during the year 1998. During that time I was working at TNEB to till date. Is there any possibility to get renewed? or to apply for a new one?

0 Answers  

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Active power= VI COS FI But incase of leading power factor ( more than unity), may we use other formula ? because the cos fi (value of cos thita) should not be grater than one.

2 Answers  

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When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number

0 Answers   TATA,

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why any Elelctricity board insist not to change the buren of their metering CTs or PTs for metering purpose? as a example elect. board not accepted that any customer change their metering CT or PT core burden from 5VA to 15VA.. why?

1 Answers  

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Why use in ht motore

0 Answers   ACB Group,

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What is difference between Sample test and Routine test in safety standard?

0 Answers   Chicony Electronics,

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What are types of central ac plants?

1 Answers   HSL,

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What are various impedence in any machine

2 Answers   Engineers India Limited, NTPC,

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How to calculate battery back up time for a 400 AH battery bank installed in telecom shelter for a load of 20 Amps and time taken to fully charge this battery bank?

3 Answers  

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what is the voltages using in movie theaters??? why ??why not other??

0 Answers   Lanco,

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When do you use a VFD motor?

1 Answers  

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Igfet is a

0 Answers  

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