Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 2 : 5.
Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open? Answer : Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open the other two bulbs will light. ...
Ratio of the rotor reactance X to the rotor resistance R for a two-phase servo motor (A) is equal to that of a normal induction motor (B) is less than that of a normal induction motor (C) ... than that of a normal induction motor (D) may be less or greater than that of a normal induction motor Answer : C...
Two light bulbs are connected in series across a 120 V battery. Bulb 1 uses 40 W of power and Bulb 2 uses 20 W of power. If bulb 1 alone is connected to the 120 V source, then it will consume (A) 90 W (B) 80 W (C) 60 W (D) 180 W Answer : Two light bulbs are connected in series across a 120 V battery. Bulb 1 uses 40 W of power and Bulb 2 uses 20 W of power. If bulb 1 alone is connected to the 120 V source, then it will consume 90 W ...
Bulbs in street lighting are all connected in? Answer : Bulbs in street lighting are all connected in parallel. ...
The hot resistance of the bulb's filament is higher than its cold resistance because the temperature co-efficient of the filament is? Answer : This is because resistance of a conductor increases with increase in temperature ....
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