Answer Posted / k.prakashchandra

Tr is an ac machine.If dc is applied ,the current will be
equal to voltage divided by dc resistance as inductance and
back emf are absent.There will not any output in the secondary.

What is the difference between resistance grounding system and resistance earthing system?

1096

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What does the term “voltage regulation” means?

1103

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The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

1980

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i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.

1927

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If rotor works in clock wise what happens

1910

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When we need up only in o/p 440v, so why we use directly in 11kva in input?

1683

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in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

1921

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what will happen if i connect 12 volt battery with 24 volt battery charger.

1901

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checking procedure of capacitor based motors.used in fans etc?

2122

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How they LT panel busbar size choose

1696

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What is the difference between rulling span and wind span of of an Over Head Transmission Line?

2326

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Merits & Demarits of Oil circuit & Air circuit breakers ?

2080

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Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

4333

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How energy is generated in hydroelectric power plant?

1304

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Name the test signals used in control system

1291

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