7.7 V1SO

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

• A. Amplifier.

• B. Power supply.

• C. Tuning.

• D. Coupler.

Which one of the following diodes produces light?

• A. Zener diode.

• B. Rectifier diode.

• C. SCR.

• D. LED.

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

• A. SCR.

• B. LED.

• C. Rectifier diode.

• D. Zener diode.

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

• A. Operates below minimum.

• B. Operates at saturation.

• C. Operates forward bias.

• D. Operates reverse bias.

What happens when a transistor reaches cutoff?

• A. There is average current flow.

• B. There is high current flow.

• C. There is low current flow.

• D. There is no current flow.

What are there parts of a transistor?

• A. Collector, emitter, base.

• B. Collector, emitter, plate.

• C. Emitter, base, hole.

• D. 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?

• A. 19.2 mA.

• B. 20 mA:

• C. 9.8 mA.

• D. 10 mA.