Which is the equation for a sinusoidal voltage?

Which is the equation for a sinusoidal voltage?

A sinusoidal voltage can be described by the equation: v (t) = V M sin (ωt + Φ) or. v (t) = V M cos (ωt + Φ) where. v (t) Instantaneous value of the voltage, in volts (V). V M. Maximum or peak value of the voltage, in volts (V) T.

Which is the correct answer for the sinusoidal expression?

The answer for the sinusoidal expression is: I understand everything except for the 19 degrees. The solutions say that the resultant waveform leads the curve i1 = 20sinwt by 19 degrees which is 0.332 rads, however I do not understand where the 19 degrees came from.

How to obtain a sinusoidal expression for an alternating current?

Obtaining sinusoidal expression. The instantaneous values of two alternating currents are given by i1 = 20sinwt amperes and i2 = 10sin(wt + pi/3) amperes. By plotting i1 and i2 on the same axes, using the same scale, over one cycle, and adding ordinates at intervals, obtain a sinusoidal expression for i1 + i2.”.

When is a sinusoidal voltage applied to a pure inductor?

When a sinusoidal voltage instantaneous value, ν is applied to a pure inductor L, the sinusoidal current i lags the voltage by 90°. The power at any instant, p = vi.

What is the instantaneous value of a sine wave?

Instantaneous value of the voltage, in volts (V). Initial phase given in radians or degrees. This quantity determines the value of the sine or cosine wave att = 0. Note: The amplitude of a sinusoidal voltage is sometimes expressed as V Eff, the effective or RMS value.

Can a phasor be drawn to represent more than two sinusoids?

All phasors are drawn referenced to the horizontal zero axis. Phasor diagrams can be drawn to represent more than two sinusoids. They can be either voltage, current or some other alternating quantity but the frequency of all of them must be the same.

How is the current phasor related to the voltage phasors?

The current phasor lags the voltage phasor by the angle, Φ, as the two phasors rotate in an anticlockwise direction as stated earlier, therefore the angle, Φ is also measured in the same anticlockwise direction.