(B)Element 3-12 WAVEFORMS

Question 1

At pi/3 radians, what is the amplitude of a sine-wave having a peak value of 5 volts

Answer 1

+4.3 volts

Question 2

at 150 degrees, what is the amplitude of a sine wave having a peak value of 5 volts?

Answer 2

+2.5 volts

Question 3

at 240 degrees, what is the amplitude of a sine wave having a peak value of 5 volts?

Answer 3

-4.3 volts

Question 4

what is the equivalent to the root-mean-square vale of an AC voltage?

Answer 4

the dc voltage causing the same heating in a given resistor as the RMS AC voltage of the same value

Question 5

What is the RMS value of a 340 volt peak to peak sine wave?

Answer 5

120 volts

Question 6

determine the phase relationship between the two signals shown in figure 3b3

Answer 6

b is lagging a by 90 degrees