Question

If the potential of a capacitor having capacity 6 μF is increased from 10 V to 20 V, then increase in its energy will be(a) 4 × 10⁻⁴ J(b) 4 × 10⁻⁴ J(c) 9 × 10⁻⁴ J(d) 12 × 10⁻⁶ J

Answer 1

Three- phase AC Regulators

There are many types of circuits used for the three-phase ac regulators (ac to ac voltage converters), unlike single-phase ones. The three-phase loads (balanced) are connected in star or delta. Two thyristors connected back to back, or a triac, is used for each phase in most of the circuits as described. Two circuits are first taken up, both with balanced resistive (R) load