Answer / ibrahim+8801671121852

lighting arrester is used mainly for balancing the voltages
of any building. when lit comes from the sky the voltages of
any houses is rises. to aviod this rising voltage we used
lighting arrester. but if it passed 3.3kv it doesn't work.
or it would be burned.

What is block diagram?

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WHAT IS THE DIFFERENCE BETWEEN RESISANTANCE AND IMPEDANCE IF IMPEDANCE IS MORE THAN RESISTANCE AT SAME VOLTAGE CAN WE HAVE RELATION DERIEVED BETWEEN THEM

4 Answers  

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in india,we use 230V,50 Hz,whereas many other countries use 110V,60Hz.what r d advs and disadvantages of each of them?

11 Answers  

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what is the voltage between earth & neutral in 3 phase electrical connection.

0 Answers   Megatron Solutions, SIPL,

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Classify driling machines.

0 Answers   Essar,

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what is meant by excitation current & armature current ? where its produce & how we can calculate ?

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Dear All please ive me ur ideas... What is the major diff between cu conductors and Al conductors ?

3 Answers   MX Technology,

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Motor,transformers,capacitor tubelight etc....

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A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.

0 Answers   VECL,

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Plugging is a phenomenon to= A braking the motor B to accelerate the motor C to run IM as generator D to start the motor

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Why do we use copper cable for HT Supply and why not Aluminium?

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How to decide DO set rating of Transformer?

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