Flag Electromagnetic Induction> A servo voltage stabilizer restricts the ...
question mark

A servo voltage stabilizer restricts the voltage output to 220 V ± 1%. If an electric bulb rated at 220 V, 100 W is connected to it, what will be the minimum and maximum power consumed by it?

Radhika Batra , 10 Years ago
Grade 11
anser 1 Answers
Kevin Nash

Last Activity: 10 Years ago

Sol. Output voltage = 220 ± 1% 1% of 220 V = 2.2 v The resistance of bulb R = V^2/P = (220)^2/100 = 484 Ω (a) For minimum power consumed V base 1 = 2220 – 1% = 220 – 2.2 = 217.8 ∴ i = V base 1/R = 217.8/484 = 0.45 A Power consumed = i * V base 1 = 0.45 * 217.8 = 98.01 W (b) for maximum power consumed V base 2 = 220 + 1% = 220 + 2.2 = 222.2 ∴ i = V base 2/R = 222.2/484 = 0.459 Power consumed = i * V base 2 = 0.459 * 222.2 = 102 W

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...