7.7 V1S1

In which of the following circuits is a rectifier diode used?

• Amplifier.

• Power supply.

• Tuning.

• Coupler.

Which one of the following diodes produces light?

• Zener diode.

• Rectifier diode.

• SCR.

• LED.

Which one of the following diodes is used like a switch?

• SCR.

• LED.

• Rectifier diode.

• Zener diode.

Which one of the following statement is the unique feacture of a zener diode?

• Operates below minimum.

• Operates at saturation.

• Operates forward bias.

• Operates reverse bias.

What happens when a transistor reaches cutoff?

• There is average current flow.

• There is high current flow.

• There is low current flow.

• There is no current flow.

What are there parts of a transistor?

• Collector, emitter, base.

• Collector, emitter, plate.

• Emitter, base, hole.

• Collector, base, arrow.

How many junctions does a transistor have?

• A. 2

• B. 1、

• C. 4

• D. 3

What is the emitter current in an NPN transistor if the collector current is 19.6 mA and the base current is 0.4 mA?

• 19.2 mA.

• 20 mA:

• 9.8 mA.

• 10 mA.