1.       Antimony add into Germanium

a.       P-type Semiconductor

b.      N-type Semiconductor

c.       PN junction

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2.       Two 100A diode connect in parallel, the resultant current is

a.       50 A

b.      100 A

c.       200 A 

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3.       How many diode can form a  half-wave rectifier:

a.       One diode

b.      4 diodes in a bridge circuit

c.       Two diodes in parallel

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4.       Current gain of an emitter follower

a.       Ratio of emitter current to base current

b.      Ratio of collector current to base current

c.       Ratio of base current to emitter current

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5..       Time lag due to

a.       Inertia of system

b.      Amplifier needs time to produce signal

c.       Time for operator to change the instant load