A step up transformer connected to a 220 VAC line is to supply 22 kV 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

A step up transformer connected to a 220 VAC line is to supply 22 kV 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 (A) 50 (B) 100 (C) 150 (D) 200

Tardigrade Admin · Accepted Answer

(Ns/Np)=(Vs/Vp)=(22000/220)=100

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

50

100

150

200

$\frac{N _{s}}{N _{p}} = \frac{V _{s}}{V _{p}} = \frac{22000}{220} = 100$

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

50

100

150

200

Np​Ns​​=Vp​Vs​​=22022000​=100

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

$\frac{N _{s}}{N _{p}} = \frac{V _{s}}{V _{p}} = \frac{22000}{220} = 100$