Why a transformer is known as a static device?

7 Answers  

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effect of decrease in excitation?

2 Answers  

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Moving Iron instruments are applicable with a) DC only b) AC only c) DC & AC

14 Answers   Bhel, Engineers India, Engineers India Limited,

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what is the magnitude of earthing and neutral voltage

2 Answers  

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Are same transformer be employed for step up and step down services?

3 Answers  

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What is the efficiency during maximum power transfer?

0 Answers  

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in short circuit. test of a transformer 5 to 10% ofvrated voltage is used why??? if we use rated voltafe then what will be?

1 Answers  

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What are the disadvantages of LT AVR over HT AVR?

1 Answers   APTransco, Jindal, TNEB Tamil Nadu Electricity Board,

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one cable insulation resistance 200 mega ohm. how find 250 meter cable resistance.

2 Answers   NTPC,

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Application wise, where we should use AC motors and where we should DC motors?

1 Answers   Nespak,

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What happens with squirrel induction machines if the ends of rotor conductors are kept open? Explain

5 Answers  

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How we calculate the average power factor if the one phase is lag and another one is in lead?

1 Answers   DigiTech, MCR,

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