Answer Posted / john

Online UPS, it is getting power AC is converting to DC, then
the DC source stored to Battery at power supply on mode when
power fail, the DC sorce is changed to AC by inverter so
output power is having without noise.

OFFline UPS is having automatic voltage regulator, it
getting power from supply, it is regulated by AVR, then
power stored to battery so the change over time approx 2ms
to 5ms so change over noise comes.

what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?

3486

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i need to give section engineer (electrical engineer) for RRB. Please suggest some book

1886

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How can we calculate the transformer rating if the load calculated is 1000KW (11Kv Supply)?

1084

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what are types of encoder

1880

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How we can calculate the Amps for the cable Ex:- For 1sqmm wire how many amps we can draw (calculation)

3198

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Explain the advantages and disadvantages of hydropower plant?

1137

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how ceiling fan worked?

1921

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What is the name of transformers oil filteration equipment?

2093

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what do you mean by type zero control sytem ?Give an practical example of type zero contol sytem?

1976

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What should be the percentage increase in length of the dead end clamp for bus bar conductor (Hawthorn) after hydraulic pressing and what should be the applied pressure?

1943

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What is Auto Mains Failure Panel & Auto Synchronizing Panel

1944

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In the ACB breaker capacity is 2000Amp but this each phase taken 1250 But total beldibg load is 600amp or 700amp watt is the problem

1964

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what is die electric strnth of transformer ?

2191

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draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words

23137

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tell me about roaster switch .& what is the function in transmission & distribution?

2676

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