A signal with a 400 s period has a frequency of 2,500 Hz 400 Hz 250 Hz 25,000 Hz TRUE ANSWER : ? YOUR ANSWER : ?
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 lags wave B by 105°. Wave A lags wave B by 15°. Wave A leads wave B by 105°. Wave A leads wave B by 15°. TRUE ANSWER : ? YOUR ANSWER : ?
A sawtooth wave has a period of 10 ms. Its frequency is 1,000 Hz 50 Hz 10 Hz 100 Hz TRUE ANSWER : ? YOUR ANSWER : ?
If a sine wave goes through 10 cycles in 20 s, the period is 4 s 20 s 2 s 100 s TRUE ANSWER : ? YOUR ANSWER : ?
A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is 4 V 4.6 V 11 V 1.6 V TRUE ANSWER : ? YOUR ANSWER : ?
The average value of a 12 V peak sine wave over one complete cycle is 1.27 V 0 V 7.64 V 6.37 V TRUE ANSWER : ? YOUR ANSWER : ?
A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle cannot be determined is 100% is 30% is 1% TRUE ANSWER : ? YOUR ANSWER : ?
If the rms current through a 4.7 k resistor is 4 mA, the peak voltage drop across the resistor is 4 V 18.8 V 2.66 V 26.6 V TRUE ANSWER : ? YOUR ANSWER : ?
A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of 2 ms 0.0045 s 3,000 s 1.5 ms TRUE ANSWER : ? YOUR ANSWER : ?
A square wave has a period of 60 s. The first odd harmonic is 500 kHz 5 kHz 50 kHz 33.33 kHz TRUE ANSWER : ? YOUR ANSWER : ?