1. If the emitter resistance decreases, the ?

Q point moves up

Collector current decreases

Q point stays where it is

Current gain increases

Answer: Q point moves up

Explanation:


2. If the base resistor is very small, the transistor will operate in the ?

Cut-off region

Active region

Saturation region

Breakdown region

Answer: Saturation region

Explanation:


3. When the point moves along the load line, the voltage increases when the collector current ?

Decreases

Stays the same

Increases

Does none of the above

Answer: Decreases

Explanation:


4. BJT is ?

Current-controlled device

Voltage-controlled device

Power controlled device

None of the above

Answer: Current-controlled device

Explanation:


5. When the collector current increases, what does the current gain do ?

Decreases

Stays the same

Increases

Any of the above

Answer: Any of the above

Explanation:


6. If a transistor is operating with both of its junctions forward-biased, but with the collector base forward-bias greater than emitter-base forward-bias, then it is operating in the ?

Forward-active mode

Reverse saturation mode

Reverse-active mode

Forward-saturation mode

Answer: Forward-saturation mode

Explanation:


7. If the emitter resistor is open, the collector voltage is ?

Low

High

Unchanged

Unknown

Answer: High

Explanation:


8. If the base supply voltage increases the point moves ?

Down

Up

Nowhere

off the load line

Answer: Up

Explanation:


9. If the collector resistor is open, the collector voltage is ?

Low

High

Unchanged

Unknown

Answer: Low

Explanation:


10. Alpha is the symbol of current gain for ?

Common-base mode

Common emitter mode

Common-collector mode

None of the above

Answer: Common-base mode

Explanation: