14140499
Beschreibung
Quiz von Katrina Himes, aktualisiert more than 1 year ago
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Erstellt von Katrina Himes
vor etwa 6 Jahre
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Frage 1
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For the emitter bias, the voltage across the emitter resistor is the same as the voltage between the emitter and the
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Base
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Collector
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Emitter
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Ground
Frage 2
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A coupling capacitor is
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A dc short
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An ac open
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A dc open and an ac short
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A dc short and an ac open
Frage 3
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The emitter is at ac ground in a
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CB stage
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CC stage
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CE stage
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None of these
Frage 4
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For emitter bias, the voltage at the emitter is 0.7 V less than the
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Base voltage
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Emitter voltage
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Collector voltage
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Ground voltage
Frage 5
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The capacitor that produces an ac ground is called a
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Bypass capacitor
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Coupling capacitor
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DC open
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AC open
Frage 6
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The voltage gain equals the output voltage divided by the
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Input voltage
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AC emitter resistance
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AC collector resistance
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Generator voltage
Frage 7
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VDB is noted for its
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Unstable collector voltage
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Varying emitter current
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Large base current
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Stable Q point
Frage 8
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The capacitors of a CE amplifier appear to be
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Open to ac
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Shorted to dc
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Open to supply voltage
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Shorted to ac
Frage 9
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A swamped amplifier uses
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Base bias
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Positive feedback
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Negative feedback
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A grounded emitter
Frage 10
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VDB needs
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Only three resistors
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Only one supply
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Precision resistors
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More resistors to work better
Frage 11
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The ac equivalent circuit is derived from the original circuit by shorting all
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Resistors
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Capacitors
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Inductors
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Transistors
Frage 12
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In a swamped amplifier, the effects of the emitter diode become
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Important to voltage gain
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Critical to input impedance
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Significant to the analysis
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Unimportant
Frage 13
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VDB normally operates in the
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Active region
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Cutoff region
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Saturation region
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Breakdown region
Frage 14
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AC emitter resistance equals 25 mV divided by the
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Quiescent base current
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DC emitter current
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AC emitter current
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Change in collector current
Frage 15
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The feedback resistor
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Increases voltage gain
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Reduces distortion
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Decreases collector resistance
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Decreases input impedance
Frage 16
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If the emitter resistance is reduced by one-half in a VDB circuit, the collector current will
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Double
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Drop in half
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Remain the same
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Increase
Frage 17
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The output voltage of a CE amplifier is
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Amplified
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Inverted
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180 ° out of phase with the input
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All of the above
Frage 18
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The ac collector resistance of the first stage includes the
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Load resistance
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Input impedance of first stage
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Emitter resistance of first stage
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Input impedance of second stage
Frage 19
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The base voltage of two-supply emitter bias (TSEB) is
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0.7 V
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Very large
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Near 0 V
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1.3 V
Frage 20
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The emitter of a CE amplifier has no ac voltage because of the
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DC voltage on it
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Bypass capacitor
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Coupling capacitor
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Load resistor
Frage 21
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If the input-coupling capacitor is open, the ac input voltage will
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Decrease
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Increase
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Remain the same
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Equal zero
Frage 22
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The Q point of TSEB does not depend on the
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Emitter resistance
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Collector resistance
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Current gain
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Emitter voltage
Frage 23
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The voltage across the load resistor of a capacitor-coupled CE amplifier is
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DC and AC
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DC only
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AC only
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Neither DC or AC
Frage 24
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The ac collector current equals the ac base current times the
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AC collector resistance
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DC current gain
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AC current gain
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Generator voltage
Frage 25
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For dc, the current in a coupling circuit is
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Zero
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Maximum
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Minimum
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Average
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