Interested to Buy Any Domain ? << Click Here >> for more details...
Q. calculate the value of the resistor to be connected in series with a 100W;
230V lamp so that the wattage of the lamp is reduced to 35W
- 8 Answers
- 8353 Views
- I also Faced
- E-Mail Answers
Answer Posted / kalulu
lamp 100W/230v
when resistor R is connected in series with the lamp.
lamp power=35W
lamp Voltage= 230V /* since 230v is the operating voltage of the lamp*/
series current = 35/230
=0.152 A
power dissipated at a resistor = 100 W -35 W
= 65 W
= Isqr X R
R= 65/(0.152sqr)
= 2.8 kilo-ohm
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How to calculate per unit impedance of transformer?
What is different between Circuit breaker and Isolater?
what is transistors comprised of?
What are the main advantages of bode plot?
As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.
What Maximam Gap Taibaar & Bush
in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?
BRIEFLY EXPLAIN THE STORAGE CLASSES AND THEIR TYPES IN C
how to get electrical supervisor competency certificate in gujarat. i did 3 year diploma in electrical
A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.
Why we use Electrical energy rather than any other type of energy, mostly? Explain behavior of open secondary CT and short circuited secondary PT in energized condition?
we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain
Explain how you decide what size of electrical wire do you need?
Witch do depand of Power factor and theory of power factor?
all interview questions with answers of ntpc (2000-2009
