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For the given circuit, comment on the type of transformer used:
[Circuit: 220 V primary, secondary with $I_s = 0.11$ A, Load = 60 W]
(1) Auxiliary transformer
(2) Auto transformer
(3) Step-up transformer
(4) Step down transformer
$V_S = P/I = 60/0.11 = 545.45$ V. Since $V_S > V_P = 220$ V, it is a step-up transformer.
BETA
