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Home ‣ Electrical Engineering ‣ Circuit Theorems in AC Analysis Comments
- Question
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.
Options- A. True
- B. False
- Correct Answer
- True
- 1. 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.
Options- A. True
- B. False Discuss
- 2. Like Thevenin's theorem, Norton's theorem provides a method of reducing a more complex circuit to a simpler, more manageable form for analysis.
Options- A. True
- B. False Discuss
- 3. The superposition theorem is useful for circuit analysis only in ac circuits.
Options- A. True
- B. False Discuss
- 4. A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.
Options- A. True
- B. False Discuss
- 5. One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage.
Options- A. True
- B. False Discuss
- 6. The stator is the rotating assembly in a generator or motor.
Options- A. True
- B. False Discuss
- 7. Power is measured in a three-phase load by using an ammeter.
Options- A. True
- B. False Discuss
- 8. A simple three-phase generator consists of three conductive loops separated by 120°.
Options- A. True
- B. False Discuss
- 9. A simple two-phase generator consists of two conductive loops separated by 90°, rotating in a magnetic field.
Options- A. True
- B. False Discuss
- 10. Polyphase is characterized by two or more sinusoidal voltages, each having a different phase angle.
Options- A. True
- B. False Discuss
Circuit Theorems in AC Analysis problems
Search Results
Correct Answer: False
Correct Answer: True
Correct Answer: False
Correct Answer: False
Correct Answer: False
Correct Answer: False
Explanation:
The two main parts of a generator or motor can be described in either mechanical or electrical terms:
Mechanical:
Rotor: The rotating part of an electrical machine
Stator: The stationary part of an electrical machine
Electrical:
Armature: The power-producing component of an electrical machine. In a generator, alternator, or dynamo the armature windings generate the electric current. The armature can be on either the rotor or the stator.
Field: The magnetic field component of an electrical machine. The magnetic field of the dynamo or alternator can be provided by either electromagnets or permanent magnets mounted on either the rotor or the stator.
Mechanical:
Rotor: The rotating part of an electrical machine
Stator: The stationary part of an electrical machine
Electrical:
Armature: The power-producing component of an electrical machine. In a generator, alternator, or dynamo the armature windings generate the electric current. The armature can be on either the rotor or the stator.
Field: The magnetic field component of an electrical machine. The magnetic field of the dynamo or alternator can be provided by either electromagnets or permanent magnets mounted on either the rotor or the stator.
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: True
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