The maximum theoretical efficiency of an RC-coupled class A amplifier is（）.
A.25%
B.50%
C.78.5%
D.99%
正確答案：25%
題目：The maximum theoretical efficiency of an RC-coupled class A amplifier is（）.
關鍵字：智慧樹
相關試題
1.Power amplifiers are typically used to drive low impedance loads.（）。
2.The power that an amplifier delivers to a load is equal to the difference between the power that the circuit draws from the power supply and the power that the circuit dissipates.（）。
3.The feedback circuit connection shown here is（）.
4.The output impedance of current-shunt feedback amplifier（）；the output impedance of its op-amp.
5.Calculate the voltage gain for voltage series feedback when the amplifier gain is A = -2000 and F = -1/50.（）
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