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Electrical Engineering - Alternating Current and Voltage

Exercise : Alternating Current and Voltage - General Questions
16.
Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is
16.54 V
1.65 V
10.60 V
5.93 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
If a sine wave goes through 10 cycles in 20 s, the period is
20 s
4 s
2 s
100 s
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A square wave has a period of 60 s. The first odd harmonic is
5 kHz
50 kHz
500 kHz
33.33 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?
Wave A leads wave B by 15°.
Wave A lags wave B by 15°.
Wave A leads wave B by 105°.
Wave A lags wave B by 105°.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
A phasor represents
the magnitude and a quantity direction
the width of a quantity
the phase angle
the magnitude of a quantity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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