An amplifier has a spectrally pure sine-wave input of 50 mV. It has a voltage gain of 60. A spectrum analyzer shows harmonics of 0.035 V, 0.027 V, 0.019 V, 0.011 V, and 0.005 V. Calculate the total harmonic distortion (THD) and the relative harmonic distortion.

7-22 Abasehand signal with frequency components from near de to 15 kHz frequency modulates a 200-kHz carrier, and the frequency deviation is +3 kHz. The signal is applied as the input to a cascade of two frequency triplers and one frequency doubler. Determine the output (a) center fre- quency, (b) frequency deviation, and (c) deviation ratio.

Given an input ac-voltage, v = 120 sin120πt, if the SCR Vbr is 100V, What is the fire delay angle? a. 35 degrees b. 56 degrees c. 67 degrees d. 83 degrees