1. Diodes passes current only in the direction that is biased?

a. no bias.

b. reverse.

c. forward.

2. Diodes and transistors have this common feature?

a. a base-emitter junction.

b. a base-collector junction.

c. both of these is true.

3. Foward biasing the base-emitter junction causes which of these to flow towards the base of a transistor?

a. holes .

b. electrons.

c. quarks.

4. What causes the emitter electrons to flow through the base of a transistor?

a. the collector-base is reversed biased .

b. the collector is attracted to the emitter.

c. the narrow base cannot handle the numerous electrons flowing from the emitter.

5. Rectifiers uses which of these devices to smooth out curcuit currents?

a. op-amps.

b. diodes.

c. variable resistors.

6. Which of these is truest?

a. the collector current always equals the emitter current.

b. the collector current equals the base minus the emitter current.

c. the collector current minus the base current equals the emmitter current.?.

7. The positive supply voltage enhances the flow of which of these?

a. the electrons flowing into the emitter.

b. the holes flowing towards the base.

c. the electrons flowing through the collector.

8. The gain in current from input to output is called?

a. beta voltage.

b. gamma.

c. beta.

9. If the input current is 10amps and beta is 3, the output current is which of these?

a. 3.33 amps.

b. .3 amps.

c. 30 amps.

10. Actually, a transistor is practically 2 of which of these? ?

a. resistors.

b. op-amps.

c. diodes.