13633924
Descrição
Quiz por Katrina Himes, atualizado more than 1 year ago
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Criado por Katrina Himes
aproximadamente 6 anos atrás
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Questão 1
Questão
A real voltage source has
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Zero internal resistance
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Infinite internal resistance
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A small internal resistance
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A large internal resistance
Questão 2
Questão
If a load resistance is 100 Ω, a stiff voltage source has a resistance of
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Less than 1 Ω
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At least 10 Ω
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More than 10 kΩ
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Less than 10 kΩ
Questão 3
Questão
The Thevenin voltage is the same as the
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Shorted-load voltage
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Open-load voltage
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Ideal source voltage
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Norton voltage
Questão 4
Questão
An open resistor has
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Infinite current through it
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Zero voltage across it
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Infinite voltage across it
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Zero current through it
Questão 5
Questão
A shorted resistor has
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Infinite current through it
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Zero voltage across it
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Infinite voltage across it
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Zero current through it
Questão 6
Questão
The voltage out of an ideal voltage source
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Is zero
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Is constant
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Depends on the value of load resistance
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Depends on the internal resistance
Questão 7
Questão
Assume the valence electron is removed from a copper atom. The net charge of the atom becomes
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0
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+1
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-1
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+4
Questão 8
Questão
Which is the most widely used semiconductor?
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Copper
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Germanium
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Silicon
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None of the above
Questão 9
Questão
Silicon atoms combine into an orderly pattern called a
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Covalent bond
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Crystal
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Semiconductor
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Valence orbit
Questão 10
Questão
The flow of valence electrons to the right means that holes are flowing to the
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Left
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Right
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Either way
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None of the above
Questão 11
Questão
Trivalent atoms have how many valence electrons?
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1
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3
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4
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5
Questão 12
Questão
Negative ions are atoms that have
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Gained a proton
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Lost a proton
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Gained an electron
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Lost an electron
Questão 13
Questão
What is the barrier potential of a silicon diode at room temperature?
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0.3 V
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0.7 V
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1 V
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2 mV per degree Celsius
Questão 14
Questão
The voltage where avalanche occurs is called the
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Barrier potential
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Depletion layer
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Knee voltage
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Breakdown voltage
Questão 15
Questão
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
Questão 16
Questão
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
Questão 17
Questão
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
Questão 18
Questão
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
Questão 19
Questão
If the line frequency is 60 Hz, the output frequency of a bridge rectifier is
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30 Hz
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60 Hz
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120 Hz
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240 Hz
Questão 20
Questão
With the same secondary voltage and filter, which has the most ripple?
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Half-wave rectifier
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Full-wave rectifier
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Bridge rectifier
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Impossible to say
Questão 21
Questão
If the secondary voltage increases in a bridge rectifier with a capacitor-input filter, the load voltage will
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Decrease
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Stay the same
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Increase
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None of these
Questão 22
Questão
If the filter capacitance is increased, the ripple will
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Decrease
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Stay the same
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Increase
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None of these
Questão 23
Questão
A circuit that removes positive or negative parts of a waveform is called a
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Clamper
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Clipper
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Diode clamp
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Limiter
Questão 24
Questão
With a half-wave rectified voltage across the load resistor load current flows for what part of a cycle?
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0°
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90°
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180°
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360°
Questão 25
Questão
A circuit that adds a positive or negative dc voltage to an input sine wave is called a
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Clamper
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Clipper
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Diode clamp
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Limiter
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