Answer Posted / jitendra gosai

Standard tripping classes are 10 A, 10, 20, 30. The
tripping
class indicates according to IEC 60947-4-1 the maximum
tripping time in seconds under specified conditions of test
at
7.2 times the setting current and specifics tripping and non
tripping times for 1.5 and 7.2 times the setting current.

can we make a electric generator,which can not use any type of fuel,air,solar,gas,thermal,coal,petrol,etc and able to produce electrical energy (or self electricity generating generator)

1504

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In HI POT test what is reason for applying the AC VOLTS and DC VOLTS in different applications what is the nessesity for this ?

1457

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CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

5075

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What is CVT and what is relation with wave trap?

1660

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Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?

1450

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11 kV line deraction check by an Engineer.

1525

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what is the meaning of the symbol << >> put in transformer drawing

1451

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explain safety measures in alternator?

1334

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What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?

1432

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Inductor and capacitor........power in one phase and ...... in it another phase.

1607

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Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?

1427

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how to measure dc earth leakage current?

2601

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in non technical way how can u define POWER FACTOR??

1374

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Is a 300w induction motor used in a food processor as powerful as a 1000w DC motor.

1741

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upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.

1637

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