Bipolar Junction Transistors (BJT) - General Questions Online Exam Quiz
Bipolar Junction Transistors (BJT) - General Questions GK Quiz. Question and Answers related to Bipolar Junction Transistors (BJT) - General Questions. MCQ (Multiple Choice Questions with answers about Bipolar Junction Transistors (BJT) - General Questions
When transistors are used in digital circuits they usually operate in the:
Options
A : active region
B : breakdown region
C : saturation and cutoff regions
D : linear region
Three different Q points are shown on a dc load line. The upper Q point represents the:
Options
A : minimum current gain
B : intermediate current gain
C : maximum current gain
D : cutoff point
A transistor has a of 250 and a base current, I B , of 20 A. The collector current, I C , equals:
Options
A : 500 A
B : 5 mA
C : 50 mA
D : 5 A
A current ratio of I C /I E is usually less than one and is called:
Options
A : beta
B : theta
C : alpha
D : omega
With the positive probe on an NPN base, an ohmmeter reading between the other transistor terminals should be:
Options
A : open
B : infinite
C : low resistance
D : high resistance
In a C-E configuration, an emitter resistor is used for:
Options
A : stabilization
B : ac signal bypass
C : collector bias
D : higher gain
Voltage-divider bias provides:
Options
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
To operate properly, a transistor's base-emitter junction must be forward biased with reverse bias applied to which junction?
Options
A : collector-emitter
B : base-collector
C : base-emitter
D : collector-base
The ends of a load line drawn on a family of curves determine:
Options
A : saturation and cutoff
B : the operating point
C : the power curve
D : the amplification factor
If V CC = +18 V, voltage-divider resistor R 1 is 4.7 k , and R 2 is 1500 , what is the base bias voltage?
Options
A : 8.70 V
B : 4.35 V
C : 2.90 V
D : 0.7 V
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