100+ TOP Bipolar Junction Transistors (BJT) Online Test – Questions 1. Most of the electrons in the base of an NPN transistor flow: into the emitter into the collector into the base supply out of the base lead 2. A transistor may be used as a switching device or as a: variable resistor tuning device fixed resistor rectifier 3. Voltage-divider bias provides: a Q point that easily varies with changes in the transistor’s current gain an unstable Q point a stable Q point a Q point that is stable and easily varies with changes in the transistor’s current gain 4. Three different Q points are shown on a dc load line. The upper Q point represents the: minimum current gain intermediate current gain cutoff point maximum current gain 5. To operate properly, a transistor’s base-emitter junction must be forward biased with reverse bias applied to which junction? collector-base base-collector collector-emitter base-emitter 6. In a transistor, collector current is controlled by: collector resistance base current collector voltage all 7. With low-power transistor packages, the base terminal is usually the: right end tab end middle stud mount 8. What is the current gain for a common-base configuration where IE = 4.2 mA and IC = 4.0 mA? 16.80 1.05 0.20 0.95 9. In a C-E configuration, an emitter resistor is used for: stabilization higher gain collector bias ac signal bypass 10. The C-B configuration is used to provide which type of gain? power voltage current resistance Loading … Question 1 of 10
