If N1 and N2 are the number of windings in the primary and s

If N_1 and N_2 are the number of windings in the primary and secondary of an input transformer, respectively, and N_2 is 5 times > N_1, is the transformer a step-up or a step-down? a. Step-up b. Step-down 4. A 10 muF capacitor is plugged into a 110 V-rms 60 Hz voltage source. What is the rms current through the capacitor? a. Arms 5. The inductance of a tuning circuit in your AM radio is 4 mH. Find the capacitance required to receive 1290 kHz. a. F.

Solution

(1)

The transformer steps up the primary voltage when n > 1, steps it down when n < 1, or serves as a matching device

when n = 1.

n=N2/N2=5/1

n>1 so it is Step-up