Question

Draw an impedance diagram for the series connected coils with zero coupling.

the values I have is:

Impedance: 8.5 ohms

Phase angle: 51.14 degrees

Resistance: 5.84 ohms

Reactance: 6.62 ohms

Inductance: 0.02 Henrys

Circuit connections Connect the two air-cored coils in series as shown in figure 2, Yellow Yellow LO﹁ Terminal SOURCE Terminal Transformer 6 Volts A.C Wattmeter Mains Figure 2. - Impedance measurement of coils connected in series Measurement and calculations PLEASE SWITCH OFF THE TRANSFORMER AFTER YOU HAVE TAKEN YOUR READINGS SO THAT THE COILS DO NOT OVERHEAT 1) Ensure that the coils are at least 30 cm apart, and away from any metal objects,.a that there is no magnetic coupling. Determine the total impedance, phase angle resistance, reactance and inductance of the two coils in series using th measurement methods undertaken in the previous exercises. 2) Enter the calculated value of resistance, reactance, phase angle an inductance for the two coils in series in the appropriate columns in row 8 of the spreadsheet. Draw an impedance diagram for the series connected coils with zero coupling- brought together so that the yellow termínals are adiacent mut the air-core 3) Compare these results with those previously obtained for the individual col 4Switch on the circuit and note what happens when the two air-cored, co ut the air- on a flat surface

Answer 1

R 5 84 Xử 6.62L 0 02 5. 84

gmaれ ナ 2= S. 84 f.ne.ㅕ ω-331rad/kee er 2- (k+j 6-62- at R- 2-j662 6 62

2 -5. 84 レ