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1. Four bulbs, each of rating (100 W, 220 V) andconnected in parallel across a voltage supply of220 V, are operated for five hours daily. If all the bulbsare replaced by LEDS of rating (8 W, 220 V), howmany units of electrical energy will be saved everymonth (30 days)?(1) 55.2 units(2) 60 units(3) 4.8 units(4) 32 units

Answer» 1. Four bulbs, each of rating (100 W, 220 V) and
connected in parallel across a voltage supply of
220 V, are operated for five hours daily. If all the bulbs
are replaced by LEDS of rating (8 W, 220 V), how
many units of electrical energy will be saved every
month (30 days)?
(1) 55.2 units
(2) 60 units
(3) 4.8 units
(4) 32 units


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