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What is no of turns in winding of secondry side of Trasformer when the input is 11KVA and output is 430V?
Turns ratio will define the change in voltage from primary to secondary. What you have supplied is not enough information - you have 1 voltage, and a power value (Killovoltamperes = KVA), which is clearly not enough to answer the equation:
N1/N2 = V1/V2, where N1 is the primary side turns, N2 is the secondary, V1 is primary, and V2 is secondary voltage.
What else can I help you with?
What is standby output of generator?
The word "standby" is used in 2 ways. 1) A standby generator is essentially a spare power source for when the main one fails. Usually cuts in automatically. 2) Kubota J series (and others?) say eg Prime output is 10kVA, and Standby output is 11kVA. I presume this means you can get 11kVA, but not good for the engine.
What is no load current of a 15MVA 33 11KV transformer?
No load current is excitation current, and is usually specified as a certain percent of base KVA rating at a specific voltage (often tested at 90, 100, and 110% rated voltage). This can be found in the test report for the specific transformer in question, or should be supplied by the manufacturer. Note it is specified as a percent of base, so if heated up from the high side, the current will be less than from the lowside - the transformer's excitation takes the same amount of power regardless of energizing voltage. You could test this roughly yourself by applying rated voltage to the lowside, and measuring the induced current. The load current for a single phase 11kVA transformer would be: 11K / (L-N voltage).
