Multiple Choice
A transformer-coupled class A amplifier with a transformer turns ratio of 4:1 and a value of RL = 25 Ω draws 220 mW from its dc power supply. What is the efficiency of the circuit?
A) 20.5%
B) 27.3%
C) 40.9%
D) 73%
Correct Answer:

Verified
Correct Answer:
Verified
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