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ATT WEEK 5 EXAM QUESTIONS AND ANSWERS

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ATT WEEK 5 EXAM QUESTIONS AND ANSWERS

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ATT WEEK 5 EXAM QUESTIONS AND ANSWERS


Limiting action happens in series when a diode is________ and in
parallel when a diode is________. -----Answers----Reverse biased,
forward biased.


What is the purpose of a diode limiting circuit? -----Answers----To
limit amplitude of the input.


What do clampers do? -----Answers----Add DC to AC signal.


A transistor in a Common Emitter transfers an internal resistance
from a low resistance in emitter base to? -----Answers----High
resistance in collector base.


Ie (Emitter current) = ? -----Answers----Ib (base current) + Ic
(collector current)


When does cutoff occur in a Common Emitter? -----Answers----When
Emitter PN junction is reversed.


A Common Emitter has a gain of how much? -----Answers----10


How does a Common Emitter affect the phase of an input signal? -----
Answers----It inverts the input 180° (flip)

, A Common Collector has a gain of how much? -----Answers----1 (no
phase inversion)


A Common Base has a gain of how much? -----Answers----10 (no
phase inversion)


How do transistor amplifiers operate? -----Answers----By an AC input
signal changing base bias.


The component that develops bias for a transistor part is directly
connected to the_________. -----Answers----Corresponding transistor
part.


In a Common Emitter, if base voltage (base bias) increases, emitter
current does what? -----Answers----Increases.


A small input controls a__________. -----Answers----Large output


What is the most common type of Multi-stage Amplifier? -----
Answers----RC (Resistive-capacitive)


What is the purpose of Cascade amplifiers? -----Answers----To
increase Av (Voltage Gain)


How is AvT (Total voltage gain) calculated in a Cascade Amplifier? -
----Answers----The product of individual stage gains
(Q1xQ2xQ3x...=AvT)

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