TRANSISTOR AMPLIFIER - Practice Mode

1) What is the purpose of using positive feed back in amplifiers?

To produce modulation To produce demodulation To produce oscillation To produce multiplexion

Correct Answer: To produce oscillation

2) What will happen when the forward bias voltage across the PN junction is increased excessively?

Increases the cut - in - voltage Barrier width of junction increases Junction ruptured and short circuited No current flows through the junction

Correct Answer: Junction ruptured and short circuited

3) What is the overall base emitter voltage required to turn the darlington pair?

0.2 V 0.3 V 0.7 V 1.4 V

Correct Answer: 1.4 V

4) Why the complementary - symmetry amplifier is preferred over the other types of amplifier configurations?

To minimize the gain To get less distortion To get more voltage gain To eleminate the transformer

Correct Answer: To eleminate the transformer

5) How can you confirm a transistor as defective?

By circuit testing By ohm meter testing By physical testing By voltage measurements

Correct Answer: By ohm meter testing

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