Answer / marques, joão

The heating time constant is the time required for a
electric motor to attain 63.2% of it's final temperature
for a fixed power input.

Answer / shyams

It is the time required for the electric motor to attain 63.2% of the maximum temperature reached by that electric motor

Answer / adeel

It is the time required for the homogeneous thermal model of an electric motor to attain 63.2% of the steady state temperature for a fixed input and fixed load torque.

What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)

0 Answers  

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in three phase 11kv transformer (11kv/433v) input( R,Y,B) output (X,Y,Z,N) the connection as follows 1 phase R -open 2phase y connected to both R and y of input] 3phase B- B what is the output voltage X to N ,Y to N , Z to N

2 Answers   Bescom,

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what voltage to be select in megger for insulation resistance testing to L.V , H.T cables,motors and transfomer?and ohms valve should be giga ohms only or what?

1 Answers   Deevya Shakti Paper Mills,

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What is mean demand of the Plant?

2 Answers  

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in electric lamp what is ballast. y its needed to start & stop lamp. what is ballast ckt.

0 Answers  

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if a motor is running at 1500rpm then how you can find its HP

1 Answers   Construction,

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how many earthings will be required for 1 isolator & 2 VCB, which are connected to a 1600 KVA Distribution TRansformer?

2 Answers  

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Why does a TV set have two pin plug whereas the moniter of a computer has three pin plug? Isn't the earthing protection required for the TV set

2 Answers  

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For 160kw motor what size of cable and material is needed.?

1 Answers  

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Can anyone tell me what will happen if AC & DC supply get mixed???

9 Answers  

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where is the primary of CT??

3 Answers  

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why test lamp didn't glow across 500v megger?

4 Answers   Aurobindo,

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