A step up transformer connected to a $220\ V\ AC$ line is to supply $22\ kV$ a neon sign in secondary circuit. In primary circuit a fuse wire is connected which is to blow when the current in the secondary circuit exceeds $10\ mA$. The turn ratio of the transformer is

Question

Dr. Abubacker · Accepted Answer

(b) $\frac{N_{s}}{N_{p}} = \frac{V_{s}}{V_{p}} = \frac{22000}{220} = 100$

Q. A step up transformer connected to a $220\ V\ AC$ line is to supply $22\ kV$ a neon sign in secondary circuit. In primary circuit a fuse wire is connected which is to blow when the current in the secondary circuit exceeds $10\ mA$. The turn ratio of the transformer is

Explanation

Reviewed by Dr. Abubacker

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