a bulb of 100W and anather bulb of 200W , rated supply
voltage 230v.when supply voltage is reduced to 100v,which
bulb will give more light? and why with calculation?
- 12 Answers
- 32761 Views
- I also Faced
- E-Mail Answers
Answer Posted / nimish
P = V*i
For 100w bulb i = 100/230 = 0.4 A
For 200w bulb i = 200/230 = 0.8 A
Now voltage is reduced to 100 V , i = 100 / 100 = 1 A
i = 200 / 100 = 2 A
So, 200 W bulb will give more light.
| Is This Answer Correct ? | 63 Yes | 10 No |
Post New Answer View All Answers
How to measure power in 2 or 4 or n phase circuit? Please give me a formula.
I FINISHED MY B.TECH IN EEE . I AM IN NEED OF A GOOD TRAINING INSTITUTE TO DO COURSES .. CAN ANYONE SUGGEST GOOD CENTRES IN TAMILNADU ,BANGALORE ,OTHER AREAS???????
please describe the Transformer setting, Motor setting, I/C setting, Tie setting
What is oscillator circuit?
i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors
how to interlock 3 incomer-ACB,1 buscoupler ACB,... pls answer this question and if possible send me the ckt diagram..haifriends2910@gmail.com
what is the standard duration after failure EB power
How To Convert Apparent Into Real Power Without Knowing Reactive Power?
what will be happen if earth point is being used for as a neutral point for raw power , and same will be used for ups earthing
If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?
Sir, I have applied for the of Jr.engineer(Electrical & Electronics) & ASST. LOCO PILOT at ALL RRB BOARDS. please send me all RRB Boards solved papers in the year of 2001 tO till date. i requested send me the papers to my id as soon as possible (jet_0991@yahoo.com). (This is very urgent) Thank You,
dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.
What happens to voltage when current through the inductor is constant?
what is (+) and (-) in generator field detector stand for?
why r we using shell transformer for low voltage
