3-B-012: Waveforms
3-12B1:
At pi/3 radians, what is the amplitude of a sine-wave having a peak value of 5 volts?
+4.3 volts.
-4.3 volts.
-2.5 volts.
+2.5 volts.
3-12B2:
At 150 degrees, what is the amplitude of a sine-wave having a peak value of 5 volts?
+2.5 volts.
-4.3 volts.
-2.5 volts.
+4.3 volts.
3-12B3:
At 240 degrees, what is the amplitude of a sine-wave having a peak value of 5 volts?
-4.3 volts.
-2.5 volts.
+2.5 volts.
+4.3 volts.
3-12B4:
What is the equivalent to the root-mean-square value of an AC voltage?
The DC voltage causing the same heating in a given resistor as the RMS AC voltage of the same value.
AC voltage is the square root of the average AC value.
The DC voltage causing the same heating in a given resistor at the peak AC voltage.
The AC voltage found by taking the square of the average value of the peak AC voltage.
3-12B5:
What is the RMS value of a 340-volt peak-to-peak pure sine wave?
120 volts AC.
170 volts AC.
240 volts AC.
350 volts AC.
3-12B6:
Determine the phase relationship between the two signals shown in Figure 3B3.
B is lagging A by 90 degrees.
A is lagging B by 90 degrees.
A is leading B by 180 degrees.
B is leading A by 90 degrees.
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