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Maximum efficiency of a transformer depe...

Maximum efficiency of a transformer depends on

A

the working condtitions of technicians.

B

weather copper loss `= 1//2 x` irons loss

C

weather copper loss = iron loss

D

weather copper loss `= 2 x` iron loss

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  2. A step up transformer is connected on the primary side to a rechargabl...

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  5. The transformer ratio of a step up transformer is

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  6. A setup transformer develops 440 V in secondary coil for an input of 2...

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  7. Assertion (A) : If changing current is flowing through a machine with ...

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  8. Transformers are used

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  9. The magnitude of the e.m.f. across the secondary of a transformer does...

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  10. For an ideal transformer ratio of output ot the input power is always

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  11. Consider the following two statements A and B and identify the correct...

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  12. Statement (A) : Flux leakage in a transformer can be minimized by wind...

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  13. Statement (A) : In high current low voltage windings of a transformer ...

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  14. Statement (A) : Step up transformer converts low voltage, high current...

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  15. To reduce the iron losses in a transformer, the core must be made of a...

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  16. Maximum efficiency of a transformer depends on

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  17. For an LCR series circuit with an aac source of angular frequency omeg...

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  18. The value of current in tow series LCR circuits at resonance is same, ...

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  19. When an ac source of emfe=E(0) sin (100 t) is connected across a circu...

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  20. An AC voltage source of variable angular frequency (omega) and fixed a...

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