Question

TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) The base region of a BJT is heavily doped and wide compared to the other two regions. 2) When a BJT is conducting, the collector current is identical to the emitter current. 3) The DC beta for a BJT is the ratio of collector current to emitter current. 4) A saturated BJT has maximum collector current. 5) Assume a transistor has a maximum power rating of 1 W and VCE = 5 V. If IC = 120 mA, the power rating is not exceeded. 6) The voltage gain of a BJT amplifier is directly proportional to the internal ac emitter resistance. 7) Photo transistors have the greatest sensitivity to blue light. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 8) In a certain BJT, the collector current is 22.0 mA when the base current is 100 µA. The emitter current is A) 21.9 mA B) 2.2 mA C) 22.0 mA D) 22.1 mA 9) The value of DC beta is the ratio of A) collector current to base current B) emitter current to base current C) collector current to emitter current D) none of the above 10) Typical values of alpha DC are from A) 1.00 to 10 B) 800 to 1000 C) 0.95 to 0.99 D) 20 to 200 11) A forward-biased npn transistor has a typical voltage drop from base to emitter of A) 1.5 V B) 0.7 V C) 10 V D) 50 V

          TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
1) The base region of a BJT is heavily doped and wide compared to the other two regions.
2) When a BJT is conducting, the collector current is identical to the emitter current.
3) The DC beta for a BJT is the ratio of collector current to emitter current.
4) A saturated BJT has maximum collector current.
5) Assume a transistor has a maximum power rating of 1 W and VCE = 5 V. If IC = 120 mA, the power rating is not exceeded.
6) The voltage gain of a BJT amplifier is directly proportional to the internal ac emitter resistance.
7) Photo transistors have the greatest sensitivity to blue light.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
8) In a certain BJT, the collector current is 22.0 mA when the base current is 100 µA. The emitter current is
A) 21.9 mA
B) 2.2 mA
C) 22.0 mA
D) 22.1 mA

9) The value of DC beta is the ratio of
A) collector current to base current
B) emitter current to base current
C) collector current to emitter current
D) none of the above

10) Typical values of alpha DC are from
A) 1.00 to 10
B) 800 to 1000
C) 0.95 to 0.99
D) 20 to 200

11) A forward-biased npn transistor has a typical voltage drop from base to emitter of
A) 1.5 V
B) 0.7 V
C) 10 V
D) 50 V

TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
1) The base region of a BJT is heavily doped and wide compared to the other two regions.
2) When a BJT is conducting, the collector current is identical to the emitter current.
3) The DC beta for a BJT is the ratio of collector current to emitter current.
4) A saturated BJT has maximum collector current.
5) Assume a transistor has a maximum power rating of 1 W and VCE = 5 V. If IC = 120 mA, the power rating is not exceeded.
6) The voltage gain of a BJT amplifier is directly proportional to the internal ac emitter resistance.
7) Photo transistors have the greatest sensitivity to blue light.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
8) In a certain BJT, the collector current is 22.0 mA when the base current is 100 µA. The emitter current is
A) 21.9 mA
B) 2.2 mA
C) 22.0 mA
D) 22.1 mA

9) The value of DC beta is the ratio of
A) collector current to base current
B) emitter current to base current
C) collector current to emitter current
D) none of the above

10) Typical values of alpha DC are from
A) 1.00 to 10
B) 800 to 1000
C) 0.95 to 0.99
D) 20 to 200

11) A forward-biased npn transistor has a typical voltage drop from base to emitter of
A) 1.5 V
B) 0.7 V
C) 10 V
D) 50 V

Added by Bridget G.

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