SSC
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Choose all of the correct equations for a transformer
|
|
Vs / Vp = Ns / Np
|
|
|
Vp / Vs = Ns / Np
|
|
|
Vp Ip = Vs Is
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -Vp = Voltage Primary Vs = Voltage Secondary. Np = Turn ratio Primary Ns = Turn ratio Secondary. Ip = Ampere Primary Is = Ampere Secondary.
Detailed explanation-2: -Since you know kVA = V * l / 1, 000, we can solve for V to get V = kVA * 1, 000 / l. So you’ll multiply your kVA rating by 1, 000 and then divide by the amperage. If your transformer has a kVA rating of 75 and your amperage is 312.5, you’ll plug those numbers into the equation-75 * 1, 000 / 312.5 = 240 volts.
There is 1 question to complete.