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Quiz von Katrina Himes, aktualisiert more than 1 year ago
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Erstellt von Katrina Himes
vor mehr als 6 Jahre
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Frage 1
Frage
When the graph of current versus voltage is a straight line, the device is referred to as
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Active
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Linear
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Nonlinear
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Passive
Frage 2
Frage
What kind of device is a resistor?
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Unilateral
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Linear
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Nonlinear
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Bipolar
Frage 3
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What kind of device is a diode?
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Bilateral
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Linear
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Nonlinear
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Unipolar
Frage 4
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How is a nonconducting diode biased?
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Forward
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Inverse
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Poorly
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Reverse
Frage 5
Frage
When the diode current is large, the bias is
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Forward
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Inverse
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Poor
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Reverse
Frage 6
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The knee voltage of a diode is approximately equal to the
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Applied voltage
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Barrier potential
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Breakdown voltage
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Forward voltage
Frage 7
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The reverse current consists of minority-carrier current and
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Avalanche current
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Forward current
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Surface-leakage current
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Zener current
Frage 8
Frage
How much voltage is there across the second approximation of a silicon diode when it is forward biased?
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0
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0.3 V
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0.7 V
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1 V
Frage 9
Frage
How much current is there through the second approximation of a silicon diode when it is reverse biased?
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0
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1 mA
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300 mA
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None of the above
Frage 10
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How much forward diode voltage is there with the ideal diode approximation?
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0
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0.7 V
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More than 0.7 V
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1 V
Frage 11
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The bulk resistance of a 1N4001 is
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0
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0.23 Ω
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10 Ω
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1 kΩ
Frage 12
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If the bulk resistance is zero, the graph above the knee becomes
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Horizontal
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Vertical
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Tilted at 45°
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None of the above
Frage 13
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The ideal diode is usually adequate when
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Troubleshooting
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Doing precise calculations
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The source voltage is low
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The load resistance is low
Frage 14
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The second approximation works well when
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Troubleshooting
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Load resistance is high
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Source voltage is high
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All of the above
Frage 15
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The only time you have to use the third approximation is when
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Load resistance is low
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Source voltage is high
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Troubleshooting
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None of the above
Frage 16
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How much load current is there in Fig. 3-21 with the ideal diode?
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0
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11.3 mA
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12 mA
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25 mA
Frage 17
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How much load current is there in fig 3-21 with the second approximation?
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0
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11.3 mA
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12 mA
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25 mA
Frage 18
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How much load current is there in fig 3-21 with the third approximation?
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0
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11.3 mA
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12 mA
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25 mA
Frage 19
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0
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11.3 V
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20 V
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-15 V
Frage 20
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If the resistor is ungrounded in fig 3-21, the voltage measured with a DMM between the top of the resistor and ground is closest to
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0
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12 V
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20 V
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-15 V
Frage 21
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The load voltage measures 12 V in fig 3-21 The trouble may be
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A shorted diode
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An open diode
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An open load resistor
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Too much supply voltage
Frage 22
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Using the third approximation in fig 3-21 how low must Rl be before the diode's bulk resistance must be considered?
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1 Ω
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10 Ω
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23 Ω
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100 Ω
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