1.
Radio frequency amplifier are usually biased?
a.
both ways for safety.
b.
forward bias.
c.
reverse bias.
2.
The named transistor probably came from its ability to?
a.
change into a transformer at peak voltage.
b.
take a rapid charge due to its peak current capability.
c.
transfer resistance from low current curcuit to a high current curcuit.
3.
A diode is a transistor without a base?
a.
true.
b.
false.
c.
true at high operating points.
4.
Which one of these can be used to make a full wave rectifier?
a.
a rectilinear force.
b.
2 diodes.
c.
3 common base transistors.
5.
The relationship between the input base current and the output current is called which of these?
a.
beta current gain.
b.
beta current.
c.
the voltage gain.
6.
Which type of coupling can pass DC currents ?
a.
transformer coupling.
b.
direct coupling.
c.
capacitor coupling.
7.
Which type of coupling creates some isolation between amplifier stages?
a.
transformer coupling.
b.
capacitor coupling.
c.
both of thes.
8.
Which class of amplifier is the push-pull amplifier?
a.
class B.
b.
Class DC.
c.
class A.
9.
Which class of amps are used for large signals?
a.
class C.
b.
class A.
c.
neither of these.
10.
High base current causes an increase in collector current?
a.
true in common emitter configurations.
b.
false in common collector amps.
c.
it has no effect.