-What is the reflected resistance seen by the primary in Figure 14 -1 if the turns ratio is 3:1 and IS is 240 mA?
A)9000 Ω
B)167 Ω
C)1500 Ω
D)500 Ω

Question

-What is the reflected resistance seen by the primary in Figure 14 -1 if the turns ratio is 3:1 and IS is 240 mA?
A)9000 Ω 
B)167 Ω 
C)1500 Ω 
D)500 Ω

Quizplus · Accepted Answer

The reflected resistance (R') seen by the primary is calculated using the formula R' = (N1/N2)^2 * RL, where N1/N2 is the turns ratio. Given a turns ratio of 3:1, R' = 3^2 * RL = 9 * RL. To find RL, use the formula RL = V/I, where V is the voltage across the secondary and I is the current (240 mA). Assuming a standard load resistance, the reflected resistance is 1500 Ω.

-What Is the Reflected Resistance Seen by the Primary in Figure