Which point is the trailing edge of the repetitive pulse waveform in the given c

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Question
Which point is the trailing edge of the repetitive pulse waveform in the given circuit?
Options
A. Point A
B. Point B
C. Point C
D. Point D

Correct Answer

Point A

Alternating Current and Voltage problems

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3. In both induction and synchronous ac motors
Options
A. the operating speed is very steady
B. the stator magnetic field is stationary
C. the stator magnetic field rotates
D. the "squirrel cage" forms the rotor

5. Most practical alternators generate electricity from
Options
A. a coil rotating within a magnetic field
B. a magnetic field rotating around fixed windings
C. a permanent magnet rotating within a varying electromagnetic field
D. none of the above

8. Which of the following statements is true about a lag network?
Options
A. An increase in frequency causes an increase in phase lag.
B. An increase in frequency causes an increase in the magnitude of the output voltage.
C. A decrease in frequency causes an increase in phase lag.
D. A decrease in frequency causes a decrease in the magnitude of the output voltage.

9. As frequency increases
Options
A. both series and parallel RL impedance decrease
B. series RL impedance decreases and parallel RL impedance increases
C. series RL impedance increases and parallel RL impedance decreases
D. both series and parallel RL impedance increase

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