Review Study questions

QUESTION 14 Select the correct relationship between a sine and cosine wave regarding phase angle a. sine wave leads the cosine wave b. cosine wave leads the sine wave c. cosine wave lags the sine wave d. All choices are incorrect. QUESTION 15 What is the purpose of a transducer? a. They are used to transform potential energy (joules) into power (watts) b. Transducers are used to convert one form of signal energy into another form of signal energy. As an example, a microphone is an example of a transducer. c. Transducers are used to convert DC signals into an alternating (AC) signal d. None of the above are correct QUESTION 16 A signal has a frequency range from 300Hz to 3.4kHz. What is the frequency bandwidth in Hz? a. 1300E6 Hz b. 3100 Hz C. 1.6 kHz d. 130 kHz