A process electric heater is taking an hour to reach the desired temperature while
operating at 440 V. It will take ------- hours to reach the same temperature if the supply
voltage is reduced to 220 V.
a) 2 b) 3 c) 4 d) 5
operating at 440 V. It will take ------- hours to reach the same temperature if the supply
voltage is reduced to 220 V.
a) 2 b) 3 c) 4 d) 5