1. The base emitter voltage of the second approximation is ?

0

0.3 V

0.7 V

1 V

Answer: 0.7 V

Explanation:


2. When there is no base current in a transistor switch, the output voltage from the transistor is ?

Low

High

Unchanged

Unknown

Answer: High

Explanation:


3. Three different Q points are shown on a load line. The upper Q point represents the ?

Minimum current gain

Intermediate current gain

Maximum current gain

Cut-off point

Answer: Maximum current gain

Explanation:


4. The power dissipated by a transistor approximately equals the collector current ?

Base emitter voltage

Collector-emitter voltage

Base supply voltage

0.7. V

Answer: Collector-emitter voltage

Explanation:


5. The first step in analyzing emitter-based circuits is to find the ?

Base current

Emitter voltage

Emitter current

Collector current

Answer: Emitter voltage

Explanation:


6. The magnitude of current Iceo ?

Depends largely upon the emitter doping

Depends largely upon the emitter base junction bias potential

Increase with increase in temperature

Is generally greater in Silicon than in Germanium transistor

Answer: Increase with increase in temperature

Explanation:


7. The collector current is 10 mA. If the current gain is 100, the base current is ?

1 microamp

10 microamp

100 microamp

1 Ma

Answer: 100 microamp

Explanation:


8. If the current gain is unknown in an emitter-biased circuit, you cannot calculate the ?

Emitter voltage

Emitter current

Collector current

Base current

Answer: Base current

Explanation:


9. If the collector resistor decreases to zero in a base-biased circuit, the load line will become ?

Horizontal

Vertical

Useless

Flat

Answer: Vertical

Explanation:


10. If the emitter resistance decreases, the collector voltage ?

Decreases

Stays the same

Increases

Breaks down the transistor

Answer: Decreases

Explanation: