Answer / shyamkr

megger is used to measure the insulation resistance only
whereas multimeter is used to measure resistance,ac
voltage,dc voltage,ac current,dc current etc....

Answer / bpn

megger is used to test the dielectric coaxial cable
whereas miltimeter is used to measure current(ac&dc),voltage
(ac&dc),resistance,npn&pnp diode's emitter,base &collector etc

Answer / milan

MULTIMETER IS USED TO MEASURE THE DC VOLTAGE & CURRENT,AC
VOLTAGE,B OF TRANSISTOR, CONTINUIETY,RESISTANS,etc...

while, MEGGER IS USED TO MEASURE INSULATION RESISTANS OF
THE CABLE OR ANY WINDING....

if current required for triggering thyristor at -30 degrees(temp) is 80 mA, what is the current required at 60 degrees

1 Answers  

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some practicle study shows that the reactive power at the receiving end is not equal to the reactive power at the sending end.But according to theory the reactive power is exchanged by different parts of the network – capacitors and reactors permanently, but is never consumed or produced. Then Where that reacrtive power loss occuring?is there any formula to calculate reactive power loss?

3 Answers  

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Why is transformer a machine

1 Answers   Grasim,

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what happens when one of the phases out 0f 3 phases been removed under working condition and no load condition will the machine run if so plz send me why

2 Answers  

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why only 11kv level is used for transmission purpose? why not 230v?

7 Answers  

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how to find motor contactor rating and bimetalic relay rating? of 30kw motor which will operate on star-delta starter?

6 Answers   HCC, L&T,

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how to calculate busbar size? ex:11000kva main what is the busbar size ?and how to select the correct one

4 Answers  

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i have one transformer 1000kva, 11/.433kv. we are using 200/5 amp. ct unit for measuring purpose, & one 800 amp. V.C.B Unit for the same t/f operate, i wants to known the primary current of T/F is only 53 amp. why we used 800 amp. V.C.B ? & 200/5 amp. CT Unit.

4 Answers  

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I have raw material for making Compact-Choke for flourscent lamp of 40 Watts. We are suppose to get 0.4 amps output at end. but we are getting 0.42 or 0.44 amps and above. We have done many testings in different but nothing worked out. Please suggest me how to get the correct output. We are using 1. core winding of 700 windings of aluminium 2. E-shape iron fillings and I-shape iron fillings to surround the winding.

6 Answers  

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what will be the difference on output when 3phase I.M. is given a delta or star supply?

3 Answers  

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Differentiate between induced emf and self inductance?

0 Answers  

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What is kirchoff ’s current law (kcl)?

0 Answers  

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