how many bulb of 60watt at 300volt is used to maintain 0.25 amp.with valid rea

how many bulb of 60watt at 300volt is used to maintain 0.25
amp.with valid reason?

Question Posted / akshay

4 Answers
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how many bulb of 60watt at 300volt is used to maintain 0.25 amp.with valid reason?..

Answer / ashutosh khadgaray

2 coz

P=VICOS(Fi)
60=300*I*0.8
I=.125

0.125 for 1 bulb so for 2 bulb it will be 0.25

Is This Answer Correct ?

11 Yes

3 No

how many bulb of 60watt at 300volt is used to maintain 0.25 amp.with valid reason?..

Answer / ramamurthy

20 of them
4 groups of lamps in series, with each group having 5 lamps
in parallel

Is This Answer Correct ?

5 Yes

1 No

how many bulb of 60watt at 300volt is used to maintain 0.25 amp.with valid reason?..

Answer / dwara

Both ans are correct. Rammamurthy's ans is for DC where as Ashutosh Khadgaray's ans is for AC

Is This Answer Correct ?

1 Yes

0 No

how many bulb of 60watt at 300volt is used to maintain 0.25 amp.with valid reason?..

Answer / kapil joshi

Only 1 Bulb
Because Total Power = 300 * 0.25 = 75 W
Required Power For 2 Bulb =2* 60 = 120 W
which is greater than 75 W
So we can use only 1 bulb

Is This Answer Correct ?

1 Yes

2 No

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