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.
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
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%.
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
How many degrees are there in p/3 rad?
How many degrees are there in p/3 rad?
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 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
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?
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
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
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 1 kHz signal has a period of 1 ms.
A 1 kHz signal has a period of 1 ms.
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
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
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
A phasor represents
A phasor represents
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
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
The unit of frequency is the hertz.
The unit of frequency is the hertz.
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
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
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
The designation rms means repetitions measured per second.
The designation rms means repetitions measured per second.
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.
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
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
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
The length of a phasor represents the amplitude.
The length of a phasor represents the amplitude.
Amplitude is the maximum value of a voltage or current.
Amplitude is the maximum value of a voltage or current.
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
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 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
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 signal with a 400 µs period has a frequency of
A signal with a 400 µs period has a frequency of
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.
Periodic is characterized by a repetition at fixed time intervals.
Periodic is characterized by a repetition at fixed time intervals.
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.
