If a sine wave goes through 10 cycles in 20 µs, the period is
If a sine wave goes through 10 cycles in 20 µs, the period is
A square wave has a period of 60 µs. The first odd harmonic is
A square wave has a period of 60 µs. The first odd harmonic is
The designation rms means repetitions measured per second.
The designation rms means repetitions measured per second.
Duty cycle is the characteristic of a pulse waveform that indicates the high time versus the low time.
Duty cycle is the characteristic of a pulse waveform that indicates the high time versus the low time.
The length of a phasor represents the amplitude.
The length of a phasor represents the amplitude.
The instantaneous value is the voltage or current value of a waveform at its peak.
The instantaneous value is the voltage or current value of a waveform at its peak.
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?
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?
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
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
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
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
Average value of a sine wave is 0.707 times the peak value.
Average value of a sine wave is 0.707 times the peak value.
A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is
A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is
To produce an 800 Hz sine wave, a four-pole generator must be operated at
To produce an 800 Hz sine wave, a four-pole generator must be operated at
A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is
A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is
The duty cycle of a pulse waveform with a pulse width of 10 µs and a period of 100 µs is 25%.
The duty cycle of a pulse waveform with a pulse width of 10 µs and a period of 100 µs is 25%.
A sine wave with an rms value of 12 V is riding on a dc level of 18 V. The maximum value of the resulting waveform is
A sine wave with an rms value of 12 V is riding on a dc level of 18 V. The maximum value of the resulting waveform is
A saw-tooth wave has a period of 10 ms. Its frequency is
A saw-tooth wave has a period of 10 ms. Its frequency is
A 20 kHz pulse waveform consists of pulses that are 15 µs wide. The duty cycle
A 20 kHz pulse waveform consists of pulses that are 15 µs wide. The duty cycle
A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of
A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of
A signal with a 400 µs period has a frequency of
A signal with a 400 µs period has a frequency of
A phasor represents
A phasor represents
If the peak of a sine wave is 13 V, the peak-to-peak value is
If the peak of a sine wave is 13 V, the peak-to-peak value is
If the rms voltage drop across a 15 kΩ resistor is 16 V, the peak current through the resistor is
If the rms voltage drop across a 15 kΩ resistor is 16 V, the peak current through the resistor is
How many degrees are there in p/3 rad?
How many degrees are there in p/3 rad?
Periodic is characterized by a repetition at fixed time intervals.
Periodic is characterized by a repetition at fixed time intervals.
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
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
Amplitude is the maximum value of a voltage or current.
Amplitude is the maximum value of a voltage or current.
The average value of a 12 V peak sine wave over one complete cycle is
The average value of a 12 V peak sine wave over one complete cycle is
The angular position of a phasor represents the angle of the sine wave with respect to a reference.
The angular position of a phasor represents the angle of the sine wave with respect to a reference.
A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of
A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of
A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is
A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is
If the rms current through a 4.7 kΩ resistor is 4 mA, the peak voltage drop across the resistor is
If the rms current through a 4.7 kΩ resistor is 4 mA, the peak voltage drop across the resistor is
A ramp is the type of waveform characterized by a non-linear increase or decrease in voltage or current.
A ramp is the type of waveform characterized by a non-linear increase or decrease in voltage or current.
When a sine wave has a frequency of 100 Hz in 12 s it goes through
When a sine wave has a frequency of 100 Hz in 12 s it goes through
If the rms current through a 6.8 kΩ resistor is 8 mA, the rms voltage drop across the resistor is
If the rms current through a 6.8 kΩ resistor is 8 mA, the rms voltage drop across the resistor is
The unit of frequency is the hertz.
The unit of frequency is the hertz.
The average half-cycle value of a sine wave with a 40 V peak is
The average half-cycle value of a sine wave with a 40 V peak is
A 1 kHz signal has a period of 1 ms.
A 1 kHz signal has a period of 1 ms.
