A
IC/IB
B
IC/IE
C
IB/IE
D
IE/IB

# Q2: Voltage-divider bias provides:

A an unstable Q point
B a stable Q point
C a Q point that easily varies with changes in the transistor's current gain
D a Q point that is stable and easily varies with changes in the transistor’s current gain

A ground
B
VC
C
VBE
D
VCC

# Q4: Most of the electrons in the base of an NPN transistor flow:

A out of the base lead
B into the collector
C into the emitter
D into the base supply

# Q5: When a silicon diode is forward biased, what is VBE for a C-E configuration?

A voltage-divider bias
B 0.4 V
C 0.7 V
D emitter voltage

A 0.001
B 0.004
C 100
D 1000

# Q7: Three different Q points are shown on a dc load line. The upper Q point represents the:

A minimum current gain
B intermediate current gain
C maximum current gain
D cutoff point

A
B
C hi-fi
D

A 16.80
B 1.05
C 0.20
D 0.95

# Q10: A transistor may be used as a switching device or as a:

A fixed resistor
B tuning device
C rectifier
D variable resistor

A
IE – IC
B
IC + IE
C
IB + IC
D
IB – IC

A VC
B VCC
C VB
D IC

A 8.70 V
B 4.35 V
C 2.90 V
D 0.7 V

# Q14: In a transistor, collector current is controlled by:

A collector voltage
B base current
C collector resistance
D all of the above

# Q15: The ends of a load line drawn on a family of curves determine:

A saturation and cutoff
B the operating point
C the power curve
D the amplification factor

A 270 degrees
B 180 degrees
C 90 degrees
D 0 degrees

# Q17: If a transistor operates at the middle of the dc load line, a decrease in the current gain will move the Q point:

A off the load line
B nowhere
C up
D down

A 0.05
B 20
C 50
D 500

A voltage
B current
C resistance
D power

A voltage
B current
C resistance
D power

# Q21: For a C-C configuration to operate properly, the collector-base junction should be reverse biased, while forward bias should be applied to which junction?

A collector-emitter
B base-emitter
C collector-base
D cathode-anode

A
30 A
B
.3 A
C
3 mA
D 3 MA

A beta
B theta
C alpha
D omega

# Q24: To operate properly, a transistor's base-emitter junction must be forward biased with reverse bias applied to which junction?

A collector-emitter
B base-collector
C base-emitter
D collector-base

# Q25: With the positive probe on an NPN base, an ohmmeter reading between the other transistor terminals should be:

A open
B infinite
C low resistance
D high resistance

A
500 A
B 5 mA
C 50 mA
D 5 A

# Q27: Often a common-collector will be the last stage before the load; the main function(s) of this stage is to:

A provide voltage gain
B provide phase inversion
C provide a high-frequency path to improve the frequency response
D buffer the voltage amplifiers from the low-resistance load and provide impedance matching for maximum power transfer

# Q28: When transistors are used in digital circuits they usually operate in the:

A active region
B breakdown region
C saturation and cutoff regions
D linear region

# Q29: In a C-E configuration, an emitter resistor is used for:

A stabilization
B ac signal bypass
C collector bias
D higher gain

A tab end
B middle
C right end
D stud mount

# Q31: A collector characteristic curve is a graph showing:

A
emitter current (IE) versus collector-emitter voltage (VCE) with (VBB) base bias voltage held constant
B
collector current (IC) versus collector-emitter voltage (VCE) with (VBB) base bias voltage held constant
C
collector current (IC) versus collector-emitter voltage (VC) with (VBB) base bias voltage held constant
D
collector current (IC) versus collector-emitter voltage (VCC) with (VBB) base bias voltage held constant

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