16. Nota
17. The magnitude of dark current in a phototransistor usually falls in what range?
(a) mA
(b) μA
(c) nA
(d) pA
18. What is (are) general-purpose/small-signal transistors case type(s)?
(a) TO-18
(b) TO-92
(c) TO-39
(d) TO-52[E]. all of the above
19. What is (are) common fault(s) in a BJT-based circuit?
(a) opens or shorts internal to the transistor
(b) open bias resistor(s)
(c) external opens and shorts on the circuit board
(d) all of the above
20. What does DC vary with?
(a) IC
(b) ºC
(c) both IC and ºC
(d) IC, but not ºC
Related Posts
555555555538. For a transistor operating in the saturation region, the collector current IC is at its ________ and the collector-emitter voltage VCE is to the ________. (a) minimum, left of the line (b) minimum, right of the line (c) maximum, left of the line (d) maximum, right of the line- Transistors » Exercise - 1 1. A transistor acts as a : (a) Diode and voltage source (b) Diode and current source (c) Diode and power supply (d) Diode and resistance 2. The free electrons recombine with a hole in the base region of a transistor to become : (a) Free electrons (b) Valence electrons (c) Atom (d) Majority carrier 3. Transistor is a : (a) current controlled current device (b) current controlled voltage device (c) voltage controlled current device (d) voltage controlled voltage device 4. ICBO in a transistor can be reduced by : (a) Reducing IB (b) Reducing VCC (c) Reducing IE (d) Reducing the temperature 5. The base current of a transistor is typically : (a) Less than emitter current (b) Greater than emitter current (c) Same as emitter current (d) Equal to the sum of emitter and collector currents 6. The current gain of a transistor is : (a) The ratio of collector current to emitter current (b) The ratio of collector current to base current (c) The ratio of base current to collector current (d) The ratio of emitter current to collector current 7. The most commonly used configuration of transistor as switch is : (a) CB (b) CC (c) CE (d) CB or CC 8. When an N-P-N transistor is used as an amplifier then : (a)…
- 555555555522. The dc load line on a family of collector characteristic curves of a transistor shows the (a) saturation region. (b) cutoff region. (c) active region. (d) all of the above
- 55555555552. The dc emitter current of a transistor is 8 mA. What is the value of re? (a) 320 (b) 13.3 k (c) 3.125 (d) 5.75
- 555555555533. A certain transistor has IC = 15 mA and IB = 167 A; DC is: (a) 15 (b) 167 (c) 0.011 (d) 90