Answer / kc ng

Normally for transformer oil temperature >80deg = alarm.
if oil temperature >90deg = tripping of VCB.

in indoor type circuit breakers why only the corner breaker trips specially during cold season. What is the reason.

0 Answers  

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How many different speeds can be obtained in cascade control of two induction motors?

1 Answers  

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

0 Answers  

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what is the difference between underreach and overreach.what is the advantage of using overreach instead of underreach.explain

1 Answers  

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hello every one, what is the difference between the Kvar and farads, Rating on Power capacitor is for eg: x kvar, and normal capacitor is eg: x farads. what is the relation between these two?

3 Answers  

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can the measured percentage error during calibration of single phase energy meter be negative?

0 Answers  

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why using touble tube lamp use in factory?

3 Answers   ONGC,

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If we give 2334 A, 540V on Primary side of 1.125 MVA step up transformer, then what will be the Secondary Current, If Secondary Voltage=11 KV?

3 Answers   L&T,

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What are the disadvantages if neutral current exists in grounded star transformer distribution system?

1 Answers  

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How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?

0 Answers  

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why to use 50hz only in tansmisson and as well as in distribution why not60hz?

2 Answers  

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what is the difference between single core,three core,three and half core and four core, and where it can be used ,

1 Answers  

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