2. The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:
3. In a pure inductor:
4. Waveforms are graphs that show:
5. When the collector current increases, what does the current gain do?
6. How many types of flow are there in a semiconductor?
7. Which one of the following devices is most often used for measuring opposition to current flow in a circuit?
8. What form of energy is used to maintain an imbalance of charges between the terminals of a battery?
9. Which one of the following statements best applies to a parallel RLC circuit?
10. The equivalent of 1 micro A is:
11. Which one of the following statements best describes magnetic hysteresis?
12. Which one of the following phrases best describes residual magnetism?
13. A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?
14. Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs?
15. Which one of the following phrases most accurately describes a purely inductive circuit?
16. The knee voltage of a diode is approximately equal to the
17. A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?
18. The rms value of a sine waveform is:
19. Which one of the following is a direct statement of Ohm's law?
20. A high-pass filter:
21. Which one of the following statements is true for the voltages in a series RC circuit?
22. A battery is a device composed of one or more:
23. Doubling the operating voltage of a purely capacitive circuit:
24. How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source?
25. The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?