| Question Answer | At what degrees on the sine wave is the voltage equal to zero? 0°, 180°, 360° | When is the voltage on a sine wave maximum positive? Maximum negative? 90° 270° | When a conductor cuts magnetic flux lines at ____ degrees, the maximum voltage will be induced into the conductor. 90° |
|---|
At what angle does a sine wave of alternating voltage reach its maximum positive value?
They are produced by all rotating machines. The sine wave contains a total of 360 electrical degrees. It reaches its peak positive voltage at
90°
, returns to a value of 0 V at 180°, increases to its maximum negative voltage at 270°, and returns to 0 V at 360°. Each complete wave form of 360° is called a cycle.
At which of the following degrees on a sine wave is the voltage at its maximum negative value?
| What is the most common type of AC waveform? Sine waves are produced by all rotating machines. | At what angle does the voltage reach its maximum negative value on a sine wave? 270 degree of maximum negative negative value on a sine wave. |
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At what degrees does a sine wave reach peak voltage?
So the sine wave voltage is defined by the mathematical sine of the angle, starting with zero amplitude at zero degrees, and finishing with zero amplitude at 360 degrees having gone through both a positive peak at
180 degrees
and a negative peak at 270 degrees.
What is the voltage of a sine wave?
For a sine wave, it is
equal to 1.414 times the RMS value
. For example, in a 120 VAC sine wave voltage, the RMS value is 120 V and the peak value is 120 X1. 414 = 169.68 or approximately 170 V.
Why is sine wave preferred?
The sine wave is important in physics
because it retains its wave shape when added to another sine wave of the same frequency and arbitrary phase and magnitude
. It is the only periodic waveform that has this property. This property leads to its importance in Fourier analysis and makes it acoustically unique.
What is the average AC voltage for a full cycle of a perfect sine wave?
For a pure sinusoidal waveform this average or mean value will always be equal to
0.637*V
max
and this relationship also holds true for average values of current.
Is RMS AC or DC?
“RMS” stands for Root Mean Square, and is a way of expressing an AC quantity of voltage or current in terms
functionally equivalent to DC
. For example, 10 volts AC RMS is the amount of voltage that would produce the same amount of heat dissipation across a resistor of given value as a 10 volt DC power supply.
How do you find the average voltage of a sine wave?
The average voltage (V
AV
) of a sinusoidal waveform is determined by
multiplying the peak voltage value by the constant 0.637
, which is two divided by pi (π).
What is the peak to peak value of 120 volt AC?
peak Value: It is the maximum value. For a sine wave, it is equal to
1.414 times the RMS value
. For example, in a 120 VAC sine wave voltage, the RMS value is 120 V and the peak value is 120 X1.
What can produce a sine wave?
The sine wave is a naturally occurring signal shape in communications and other electronic applications. Many electronic products use signals of the sine wave form.
Audio, radio, and power equipment
usually generates or processes sine waves.
Is DC voltage a sine wave?
DC circuits have a unidirectional flow of current and like AC it is not changing the direction periodically. Waveform of
DC is a pure sine wave
. As you can see, the voltage is constant with respect to time.
Do you really need a pure sine wave inverter?
Utilities also provide sine wave output. Because of this, pure sine wave inverters
are always needed if you’re going to be tied to
the grid. Typically, you’ll need pure sine wave inverters for sensitive equipment, newer TV’s, CFL light bulbs, and appliances with AC motors (microwaves and refrigerators).
Is a sine wave a function?
A sine wave is an S-shaped waveform defined by the
mathematical function y = sin x
. In finance, market participants may identify cyclical patterns or oscillator signals from sine-wave based functions.
What does a sine curve look like?
The shape of the sine curve is
the same for each full rotation of the angle
and so the function is called ‘periodic’. The period of the function is 360° or 2π radians. You can rotate the point as many times as you like. This means you can find the sine of any angle, no matter how large.
