1. For a C-C configuration to operate properly, the collector-base junction should be reverse biased, while forward bias should be applied to which junction ?

collector-emitter

base-emitter

collector-base

cathode-anode

Answer: collector-emitter

Explanation:


2. Which is the higher gain provided by a C-E configuration ?

voltage

current

resistance

power

Answer: power

Explanation:


3. The Q point on a load line may be used to determine ?

Vc

Vcc

Vb

Ic

Answer: Vb

Explanation:


4. The CE amplifier circuit are preferred over CB amplifier circuits because they have ?

low amplification factor

Larger amplification factor

High Input resistance and low output resistance

None of these

Answer: Larger amplification factor

Explanation:


5. Most of the electrons in the base of an NPN transistor flow ?

out of the base lead

into the collector

into the emitter

into the base supply

Answer: into the collector

Explanation:


6. If a transistor operates at the middle of the dc load line, a decrease in the current gain will move the Q point ?

off the load line

nowhere

up

down

Answer: down

Explanation:


7. The base current is 50 microamp If the current gain is 125, the collector current is closest in value to ?

40 microamp

500 microamp

1 mA

6 mA

Answer: 6 mA

Explanation:


8. In a transistor as an amplifier, the reverse saturation current ?

Doubles for every rise in temperature

Doubles for every 10°C rise in temperature

Decreases linearly with temperature

Increase linearly with temperature

Answer: Doubles for every 10°C rise in temperature

Explanation:


9. If the current gain is 200 and the collector current is 100 mA, the base current is ?

0.5 mA

2 mA

2 A

20 A

Answer: 0.5 mA

Explanation:


10. In the active region, the collector current is not changed significantly by ?

Base supply voltage

Base current

Current gain

Collector resistance

Answer: Collector resistance

Explanation: