EXAMIANS
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?
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A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is
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The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is
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A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle
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To produce an 800 Hz sine wave, a four-pole generator must be operated at
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If the rms current through a 6.8 k resistor is 8 mA, the rms voltage drop across the resistor is
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How many degrees are there in /3 rad?
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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
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One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is
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If the rms voltage drop across a 15 k resistor is 16 V, the peak current through the resistor is
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