Answer / joshykollam

Method 1 . By Color red, yellow , blue
Method 2 . By a Fluke phase sequence meter
Method 3 . By winding lead notation- u1,v1,w1 and u2,v2,w2-
curresponds to R,Y,B in the case of a transformer or motor
The easy way to use Phase sequence meter

Answer / md ibrahim

phase sequense meter

Answer / b shelar

u can be find out easy to use dark-bright lamp method.

where is the primary of CT??

3 Answers  

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dear all, can any body explain that how to select an induction motor for a specific mechanical load(inertia). is there any formula or calculation then please give me. i shell be very thankful to all of you. Thank,s and Rgard,s.

1 Answers  

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if the length, number of turns and area of coil are doubled then inductance of the coil becomes.?

1 Answers  

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why -48 volts dc used in telecommucation

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the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.

4 Answers  

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which motor have relatively high power factor and what is reason for have high pf? 1.capacitor run motor 2.shaded pole motor 3.capacitor start motor 4.split phase motor

0 Answers  

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why does not tester light up when it is touched to neutral of 3 pin socket.

4 Answers  

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We use MCCB not MCB for motor starters because MCCBs has capablity to drawout the motor starting current which is 5-6 times the full load current of motor for 1sec. Then why we use SDF in starter panel means MCC panels. Pls reply if any one knows this answer.

1 Answers  

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what do you mean by partial discharge in cable

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write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;

0 Answers  

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what is mean by marshalling box in transformer?

8 Answers   Reliance,

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what is the use of Turbocharger in a gen-set?

3 Answers  

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