Q. 35 An energy meter connected to an immersion heater (resistive) operating on an
AC 230 V, 50 Hz, AC single phase source reads 2.3 units (kWh) in 1 hour. The
heater is removed from the supply and now connected to a 400 V peak square
wave source of 150 Hz. The power in kW dissipated by the heater will be
(A) 3.478
(B) 1.739
(C) 1.540
(D) 0.870
Answer:(B)
Explanation:
