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1. A generator consists of 250 turns of wire each with a radius of 8.7cm. The armature turns with a frequency of 120r/s in a magnetic field of 0.86T.
a) What is the the maximum emf generated?
b) What is the average emf generated during the time interval while the armature is moving one quarter of a turn from a position where the flux through the armature is maximum?
c) What is the average emf generated during one complete turn of the armature? Explain.
2. The output voltage of a 240W transformer is 10.0V and the input current is 12A.
a) By what factor is voltage multiplied?
b) What is the output current?
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