how can we test the vector group of transformer

1 Answers  

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If i=10+10sin314t then find the rms and average value of current with explain?

2 Answers   Heptacare, TCS,

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My system is 22kv/3.3kv transformer. client is asking to use NGR, but as we have dedicated Neutral Earthing systems which has a value less than 1 Ohm. So i want solid comparision. Why i should not use NGR as my system is already protected.Can any one help me to get out of this.how should i reply on basis of some great comparision and calculations. Please help

2 Answers   Ariel,

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What is the purpose of stand by earth fault protection for transformer ?

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What is the main purpose of c.f.b.c.boiler

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what is power factor

4 Answers  

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why there is a 2 slits in three pin's earthing pin?

1 Answers  

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what are all the components required to assemble solar panel other than pv cell?

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Why to keep capacitor bank off while generator running.

0 Answers   GIT,

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iii) A shunt motor runs at 70 rad/sec from a 460V supply and takes in an armature current of 100A. Resistors of 2.52 ohms and 1.64 ohms are connected in series with the armature and in parallel with the armature respectively. The field excitation remains direct from the 460V supply but the generated torque is halved. Determine the new running speed. Neglect brush voltage drop. The armature resistance is 0.4 ohms. [15]

1 Answers  

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why d.c. supply is given to the primary side of generator?

4 Answers  

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what is the difference between 'Control Transformer & Potential/Voltage Transformer'?

2 Answers  

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