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A generator is on daily use and in the process, ten 60 W and five 40 W tungsten bulbs are on for the same time interval. The energy consumed daily is
The d. c. generator has essentially the same components as the a.c. generator except the presence of
A step-down transformer has a power output of 50 W and efficiency of 80%. If the mains supply voltage is 200 V, calculate the primary current of the transformer.
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