Single Stage Transistor Amplifiers » Exercise – 1
1. CE amplifier is characterised by :
(a) low voltage gain
(b) moderate power gain
(c) signal phase reversal
(d) very high output impedance
2. A CC amplifier has the highest :
(a) voltage gain
(b) current gain
(c) power gain
(d) output impedance
3. In a class-A amplifier, conduction extends over 360° because Q-point is :
(a) located on load line
(b) located near saturation point
(c) centred on load line
(d) located at or near cut-off point
4. The output of a class-B amplifier :
(a) is distortion-free
(b) consists of positive half-cycle only
(c) is like the output of a full-wave rectifier
(d) comprises short-duration current pulses
5. The maximum overall efficiency of a transformer coupled class-A amplifier is ________ percent.
(a) 78.5
(b) 25
(c) 50
(d) 85
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