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FC ATT Test 5 - Questions And Correct Answers
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FC ATT Test 5 - Questions And Correct Answers
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FC ATT Test 5 - Questions And Correct AnswersTransistor amplifiers require what type of signal to function? Right Ans -
DC bias and AC input signals
What changes are necessary for amplification to occur? Right Ans - Small
change in base voltage, large change in collector current
What amplifier has the best fidelity? Right Ans - class A
What amplifier has the best efficiency? Right Ans - class C
When an input is applied across the emitter to base PN Junction, what is the
relative resistance? Right Ans - low
When an input is applied across the collector to base PN Junction, What is the
relative resistance? Right Ans - high, because it is reverse biased
The purpose of a transistor is to: Right Ans - control signals
A cutoff transistor acts like it's: Right Ans - open
What type of amplifier configuration has the input applied to the emitter and
the output taken from the collector? Right Ans - common base
To determine the faulty component in a diode limiter or clamper; use
______________ Right Ans - resistance measurements
The screen grid is located between which two electrodes? Right Ans - plate
and control grid
The purpose of the screen grid is to reduce the amount of _______________
Right Ans - inter electrode capacitance
The suppressor grid reduces the effects of? Right Ans - secondary emission
How many electrodes does a pentode have? Right Ans - 5
, What electron-tube amplifier configurations provides a 180 degrees phase
shift from the input to the output? Right Ans - common cathode
What component supplies the electrons for the electron beam? Right Ans -
cathode
What term is used to describe screens that produce only one color? Right
Ans - monochrome
The _________ coating returns the secondary electrons to the power supply.
Right Ans - aquadag
The set of coils which produces a vertical magnetic field is used to deflect the
beam? Right Ans - horizontally
What happens in a transistor when the saturation point is reached? Right
Ans - Ic stops increasing
What happens in a transistor when the base voltage reverse biases the emitter
to base PN junction? Right Ans - cutoff occurs
_______ is the ratio of Ic/Ie Right Ans - Alpha
What are the two names of the electrodes in an electron tube diode? Right
Ans - plate and cathode
How many electrodes does a tetrode have? Right Ans - 4
When voltage is first applied to a gas filled tube, the gas will: Right Ans -
oppose current flow
A negative potential with respect to the cathode on the control grid will:
Right Ans - repel electrons
What component replaced the triode as an amplifier during the solid state
revolution? Right Ans - transistor
The capacitor in a clamper circuit has a fast charge path when the diode is
___________ Right Ans - forward biased
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