Quiz Questions
1. Diodes and transistors are both made of
semiconductors germanium cathodes transducers
2. The three parts of a transistor are the
anode, cathode, base base, emitter, collector diode, base, valve anode, cathode, emitter
3. A current is used for most electronic systems, while B current is easier to transport over long distances.
A=alternating, B=direct A=alternating, B=smooth A=direct, B=transformer A=direct, B=alternating
4. Here is a transistor system that turns on a sprinkler when a greenhouse gets too dry:
A gardener changes the sprinkler component to a dehumidifier. What else should be done if this same circuit were to be used to activate a dehumidifier for when the greenhouse gets too humid?
Change the emitter and the base of the transistor Switch the variable resistor and the moisture detector Place a resistor whose resistance increases with humidity in place of the variable resistor Nothing at all
5. In this transistor, the VBE, the base-emitter voltage, is equal to 0.7 V. Find the base current
2.47 mA 2.50 mA 2.54 mA 2.50 A
6. If hFE, the current gain is equal to 150, and the base current is 2.50 mA, find the emitter current.
0.375 A 60.0 A 0.378 A 62.5 A
7. If the collector current in this circuit is 0.35 Amps, find the VCE, the collector-emitter voltage.
15 V 43 V 65 V 83 V
8. All logic circuits can be made out of
AND gates OR gates NOT gates NAND gates
9. If these combinations of inputs are passed through a NOR Gate, then a NOT Gate, what will be their outputs?
Input X : 0 0 1 1 Input Y : 0 1 0 1
0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1
10. A flashlight’s circuit has a battery (10 V), a lightbulb, and a small resistor connected in series in it. If the small resistor has a voltage of 0.5 V across it, find the ratio of the lightbulb’s resistance to its own
9 9.5 19 21
