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Mixed Quiz
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1A transistor goes into saturation when the collector current has increased to its maximum possible value.
A)True
B)False


2The operating point found on a load line is labeled C because this point is often called the cut-off point.
A)True
B)False


3The two basic kinds of transistor circuits are rectifying and oscillating.
A)True
B)False


4With amplifying circuits, the Q point must remain in the active region under all operating conditions.
A)True
B)False


5Hard saturation of a transistor results when there is just enough base current to cut-off the transistor.
A)True
B)False


6Switching circuits are usually designed to operate at saturation and cutoff.
A)True
B)False


7Digital circuits are often called two-state circuits because their Q point always remains in the active region.
A)True
B)False


8A transistor can be tested using a voltmeter to check back and front resistances of emitter-base, collector-base, and collector-emitter.
A)True
B)False


9Most analog VOMs have a special forward current gain test function.
A)True
B)False


10The main advantage of an optocoupler is electrical between input and output circuits.


11Establishing a fixed value of base current is a result of bias.


12When the collector current has increased to its maximum possible value, it is said to be in .


13The point determines the maximum possible collector to emitter voltage.


14The two kinds of transistor circuits are amplifying and .


15 circuits use base bias and are designed to operate at saturation and cutoff.


16The voltage between emitter and ground is called the voltage.


17A phototransistor has more sensitivity to light than a(n) .


18Transistor replacement, collector-current changes, or temperature changes can produce large changes in
A)αdc
B)βdc
C)Pmax
D)IB


19The saturation point determines the maximum
A)power that can be dissipated
B)supply voltage that can be used
C)collector current for the circuit
D)resistor that can be used in the collector circuit


20The operating point on the load line is labeled Q because this point is called the
A)quotient point
B)quintessential point
C)quicken point
D)quiescent point


21What is the term used to describe when there is more than enough base current to saturate a transistor?
A)excessive base current
B)extreme cutoff
C)maximum active
D)hard saturation


22Amplifiers that use emitter bias have Q points that
A)are immune to changes in current gain
B)move up or down the load line with changes in current gain
C)are not on the load line
D)are at saturation or cutoff


23While testing a transistor with an ohmmeter, a high reverse/forward resistance ratio for the emitter-base and base-collector junctions indicates
A)this transistor is good
B)this transistor is open and should be replaced
C)this transistor is shorted and should be replaced
D)this transistor is a small-signal amplifier


24By exposing a transistor’s collector junction to light, a manufacturer can produce
A)an LED
B)a seven-segment display
C)a common-emitter circuit
D)a phototransistor


25What occurs when the line voltage is changing polarity from positive to negative, or vice versa?
A)polarization
B)bi-polarization
C)full-wave rectification
D)zero crossings





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