Answer / roy

BELOW 1.0 OHMS

Answer / aman arora

THE RESISTANCE OF EARTHING SHOULD BE 0 OHM BUT IT SHOULD NOT BE MORE THEN 2 OHMS IN TRANSFORMER CASE

Answer / mahesh

infinity

sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason

0 Answers   UltraTech,

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WHAT IS DGA TEST FOR THE TRANSFORMERS.

3 Answers   ABB,

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What is the main feature of v/f control?

1 Answers  

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harmonics filter

0 Answers   SEHA,

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ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

0 Answers  

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What is the field weakening mode of a ac motor?

1 Answers   L&T,

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what happen if field of dc shunt motor opens? what is function of putting res. in parallel to one phase of 3 phase IM? the power supplied by 5A source in circuit is given by------Watt.

0 Answers  

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if the supply frequency increases what happens to the motor load

2 Answers  

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What is the function of a neutral reactor.

0 Answers  

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what will happen if field winding of Synchronous generators given ac supply

4 Answers  

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what is the setting of locked rotor in HT motor ? (answer expecting in percentage)

0 Answers  

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how the testing of CT OF 400/200/100 done in33/11 kv s/s

1 Answers   Reliance,

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