Test
Chapt 10 Voltage Amplifiers
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Preguntas del test (28)
1The emitter is at ac ground in a
- ACB stage
- BCC stage
- CCE stage
- DNone of these
2The output voltage of an emitter-bypassed CE stage is usually
- AConstant
- BDependent on r'e
- CSmall
- DLess than one
3The voltage gain equals the output voltage divided by the
- AInput voltage
- BAC emitter resistance
- CAC collector resistance
- DGenerator voltage
4The input impedance of the base decreases when
- Aß increases
- BSupply voltage increases
- Cß decreases
- DAC collector resistance increases
5Voltage gain is directly proportional to
- Aß
- Br'e
- CDC collector voltage
- DAC collector resistance
6Compared to the ac resistance of the emitter diode, the feedback resistance of a swamped amplifier should be
- ASmall
- BEqual
- CLarger
- DZero
7Compared to a CE stage, a swamped amplifier has an input impedance that is
- ASmaller
- BEqual
- CLarger
- DZero
8To reduce the distortion of an amplified signal, you can increase the
- ACollector resistance
- BEmitter feedback resistance
- CGenerator resistance
- DLoad resistance
9The emitter of a swamped amplifier
- AIs grounded
- BHas no dc voltage
- CHas an ac voltage
- DHas no ac voltage
10A swamped amplifier uses
- ABase bias
- BPositive feedback
- CNegative feedback
- DA grounded emitter
11In a swamped amplifier, the effects of the emitter diode become
- AImportant to voltage gain
- BCritical to input impedance
- CSignificant to the analysis
- DUnimportant
12The feedback resistor
- AIncreases voltage gain
- BReduces distortion
- CDecreases collector resistance
- DDecreases input impedance
13The feedback resistor
- AStabilizes voltage gain
- BIncreases distortion
- CIncreases collector resistance
- DDecreases input impedance
14The ac collector resistance of the first stage includes the
- ALoad resistance
- BInput impedance of first stage
- CEmitter resistance of first stage
- DInput impedance of second stage
15If the emitter-bypass capacitor opens, the ac output voltage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
16If the emitter-bypass capacitor shorts, the base dc voltage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
17If the collector resistor is shorted, the ac output voltage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
18If the load resistance is open, the ac output voltage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
19If any capacitor is open, the ac output voltage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
20If the input-coupling capacitor is open, the ac input voltage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
21If the bypass capacitor is open, the ac input voltage at the base will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
22If the output-coupling capacitor is open, the ac input voltage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
23If the emitter resistor is open, the ac input voltage at the base will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
24If the collector resistor is open, the ac input voltage at the base will
- ADecrease
- BIncrease
- CRemain the same
- DEqual approximately zero
25If the emitter-bypass capacitor is shorted, the ac input voltage at the base will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
26If the input impedance of the second stage decreases, the voltage gain of the first stage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
27If the BE diode of the second stage opens, the voltage gain of the first stage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
28If the load resistance of the second stage opens, the voltage gain of the first stage will
- ADecrease
- BIncrease
- CRemain the same
- DEqual zero
Información
- Descripción
- Nuclear Program Test sobre Chapt 10 Voltage Amplifiers, creado por Katrina Himes el 21/05/2018.
- Autor
- Katrina Himes
- Idioma
- English
- Visitas
- 8
- Etiquetas
- Valoración
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