14054812
Beschreibung
Quiz von Katrina Himes, aktualisiert more than 1 year ago
|
Erstellt von Katrina Himes
vor mehr als 6 Jahre
|
|
Frage 1
Frage
Which of these is the best description of a zener diode?
Antworten
-
It is a rectifier diode.
-
It is a constant-voltage device.
-
It is a constant-current device.
-
It works in the forward region.
Frage 2
Frage
A transistor has how many pn junctions?
Antworten
-
1
-
2
-
3
-
4
Frage 3
Frage
The current gain of a transistor is defined as the ratio of the collector current to the
Antworten
-
Base current
-
Emitter current
-
Supply current
-
Collector current
Frage 4
Frage
A zener diode
Antworten
-
Is a battery
-
Has a constant voltage in the breakdown region
-
Has a barrier potential of 1 V
-
Is forward biased
Frage 5
Frage
The barrier potential across each silicon deletion layer is
Antworten
-
0
-
0.3 V
-
0.7 V
-
1 V
Frage 6
Frage
When the base resistor increases, the collector voltage will probably
Antworten
-
Decrease
-
Stay the same
-
Increase
-
Do all of the above
Frage 7
Frage
If the zener diode in a zener regulator is connected with the wrong polarity, the load voltage will be closest to
Antworten
-
0.7 V
-
10 V
-
14 V
-
18 V
Frage 8
Frage
The emitter diode is usually
Antworten
-
Forward biased
-
Reverse biased
-
Nonconducting
-
Operating in the breakdown region
Frage 9
Frage
If the base resistor is very small, the transistor will operate in the
Antworten
-
Cutoff region
-
Active region
-
Saturation region
-
Breakdown region
Frage 10
Frage
At high frequencies, ordinary diodes don't work properly because of
Antworten
-
Forward bias
-
Reverse bias
-
Breakdown
-
Charge storage
Frage 11
Frage
For normal operation of the transistor, the collector diode has to be
Antworten
-
Forward biased
-
Reversed biased
-
Nonconducting
-
Operating in the breakdown region
Frage 12
Frage
Ignoring the bulk resistance of the collector diode, the collector-emitter saturation voltage is
Antworten
-
0
-
A few tenths of a volt
-
1 V
-
Supply voltage
Frage 13
Frage
Breakdown does not destroy a zener diode, provided the zener current is less than the
Antworten
-
Breakdown voltage
-
Zener test current
-
Maximum zener current rating
-
Barrier potential
Frage 14
Frage
Most of the electrons in the base of an npn transistor flow
Antworten
-
Out of the base lead
-
Into the collector
-
Into the emitter
-
Into the base supply
Frage 15
Frage
If the base supply voltage is disconnected, the collector-emitter voltage will equal
Antworten
-
0 V
-
6 V
-
10.5 V
-
Collector supply voltage
Frage 16
Frage
A photodiode is normally
Antworten
-
Forward biased
-
Reverse biased
-
Neither forward nor reverse biased
-
Emitting light
Frage 17
Frage
The base-emitter voltage is usually
Antworten
-
Less than the base supply voltage
-
Equal to the base supply voltage
-
More than the base supply voltage
-
Cannot answer
Frage 18
Frage
The base current is 50 μA. If the current gain is 100, the collector current is closest in value to
Antworten
-
50 μA
-
500 μA
-
2 mA
-
5 mA
Frage 19
Frage
The device associated with voltage controlled capacitance is a
Antworten
-
Light-emitting diode
-
Photodiode
-
Varactor diode
-
Zener diode
Frage 20
Frage
The beta of a transistor is the ratio of the
Antworten
-
Collector current to the emitter current
-
Collector current to base current
-
Base current to collector current
-
Emitter current to collector current
Frage 21
Frage
A circuit with a fixed emitter current is called
Antworten
-
Base bias
-
Emitter bias
-
Transistor bias
-
Two-supply bias
Frage 22
Frage
To isolate an output circuit from an input circuit, which is the device to use?
Antworten
-
Back diode
-
Optocoupler
-
Seven-segment indicator
-
Tunnel diode
Frage 23
Frage
The collector-emitter voltage is usually
Antworten
-
Less than the collector supply voltage
-
Equal to the collector supply voltage
-
More than the collector supply voltage
-
Cannot answer
Frage 24
Frage
When the current gain increases from 50 to 300 in an emitter-biased circuit, the collector current
Antworten
-
Remains almost the same
-
Decreases by a factor of 6
-
Increases by a factor of 6
-
Is zero
Frage 25
Frage
If the base resistor is open, what is the collector current?
Antworten
-
0
-
1 mA
-
2 mA
-
10 mA
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.