Answer Posted / manoj tyagi

1.for obtaining variable o/p voltage
2.for interconnecting power s/s having voltage ratios,npy
differing far from unity
3.for starting induction $synchronous motor

How do i right a ladder diagram that has 1 actuator that performs a full stroke followed by a half stroke

2139

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For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

2380

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1.4 What is meant by CT knee point voltage and how would you determine it

1742

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is the value of inductance depends upon the evalue of thitha in doubly excited machine?

1924

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What is difference between safe PLC and normal PLC

1677

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what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.

3836

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1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

1892

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Cb closed condition if there is a tcs fail whether cb will trip or not

1892

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why to use freewheeling diode ( diode in revers bias mode) across dc coil

5095

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what is integrated ac contact circuit

2135

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What is the exact minimum vale of voltage between an earth and netural which can damage or can do malfunction of the electronic equipments ? If this is mentioned in any book, pl.give reference.

2332

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Explain the propagation of harmonics in the network and influence of phase angle of harmonics.

2003

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why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.

2037

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The electromagnetic torque developed is proportional to what in a D.C series motor?

1219

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How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

4403

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