1. A CE amplifier has a load power of 10mW and the dc power is 215 mW. The efficiency is:

15. If an emitter-follower has r'e=5 O and re=150 O, the voltage gain, AV is:

17. Two transistors are connected as a Darlington pair. If each transistor has a beta of 175, then the overall current gain of the two equals:

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