Question no.2 out of 15
Translate the voltage nc220 co2xt-60 to the sine function using the trigonometric identities shown in the figure.
t=220sin2t+30 4=210sin2t-60 et=220sin2mt-30 v=220sin2st-160 t=220sin3nt+30
Question no.3 out of 15
A sinusoidal voltage source is given by the expression t= 110 cos(111+70). Find:
Select the correct answer:
-2420sin(111+70)
-1210sin(111+70)
1540cos(111+70)
-8470sin(111+70)
330cos(111+70)
-3630sin(111+70)
+11
Question no.4 out of 15
The angle o in (c-30cos100xt+45) is known as the phase angle of the sinusoidal voltage. It determines the value of the sinusoidal function at t. Therefore, it fixes the point on the periodic wave at which we start measuring time. Changing o shifts the sinusoidal function along the time axis but has no effect on either the amplitude V or the angular frequency. What is the phase angle o in radians?
Select the correct answer:
3.1416 rad
0.62832 rad
0.07854 rad
0.7854 rad