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Analog Electronics

Q1:

IF VCC = 15 V, VCEQ = 5 V and ICQ = 50 mA, the efficiency in class A operation is

A 100%

B 50%

C 25%

D 16.7%

ANS:D - 16.7%

Efficiency = P0(ac)/Pi(dc).
Po(ac) = Vceq * Icq = 5 * 50mA.
Pi(dc) = vcc * ico = 15 * 100.
= 16.7.



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