1.
The output transformer used in a power amplifier is a _____________ transformer?
2.
The pulsating d.c. applied to power amplifier causes________________?
3.
If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion ?
4.
If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is________________?
5.
What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?
6.
The driver stage usually employs_________________?
7.
The output signal voltage and current of a power amplifier are 5V and 200 mA; the values being r.m.s. What is the power output ?
8.
The push-pull circuit must use ______________ operation?
9.
What turn ratio (Np/Ns) of transformer is required to match 4 O speaker to a transistor having an output impedance of 8000 O ?
10.
For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?
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