1. Determine VTH for the circuit external to RL in the given figure.
2. Referring to the given figure, determine ZTH as seen by RL if R1 is changed to 3.3 k.
3. The two basic components of a Thevenin equivalent ac circuit are
4. Referring to the given circuit, find ZTH if VS is 180° V.
5. In applying the superposition theorem,
6. If two currents are in the same direction at any instant of time in a given branch of a circuit, the net current at that instant
7. The Thevenin equivalent voltage is
8. Referring to the given circuit, L
9. Referring to the given circuit, find ZTH for the part of the circuit that is external to RL.
10. In order to get maximum power transfer from a capacitive source, the load must
11. Referring to the given circuit, determine ZTH as seen by RL.
12. Referring to the given circuit, how much power, in watts, is delivered to the speaker at the determined frequency if VS = 4.5 VRMS?
13. The Norton equivalent current is
14. Determine VTH if R1 is changed to 3.3 k.
15. Referring to the given circuit, what is VTH if VS = 120° V?
16. For the circuit given, determine the Thevenin voltage as seen by RL.
17. Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure.
18. Norton's theorem gives
19. One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage.
20. Norton's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent voltage source in series with an equivalent impedance.
21. A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.
22. The superposition theorem is useful for circuit analysis only in ac circuits.
23. An equivalent circuit is one that produces the same voltage and current to a given load as the original circuit that it replaces.
24. In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.
25. In order to get maximum power transfer from a capacitive source, the load must have an impedance that is the complex conjugate of the source impedance.