Answer:
The correct option is A:
A) 5
Explanation:
One of the best way to know about the vacuum leak on a speed-density fuel injection is to look at IAC count or percentage. A reading less than 5 would indicate a vacuum leak. The extra air from the leak will result in:
Increase of Idle speedMAP sensor interprets it as an additional load on the engineInjector pulse width increasesIAC count decreases, trying to reduce engine speed to a previously set valueAir-fuel mixture remains the sameWhen using a computer, you should not keep your:
shoulders and upper arms in line with your torso
wrists and hands straight (not bent up, down, or sideways)
O feet flat on the floor or supported by a stable footrest
O thighs perpendicular to the floor and the lower legs parallel to the floor
What does CPU stand for? computer processing unit central programming unit central processing unit computer programming unit
Using the data in the photo write the complex waveform expression
Answer:
1st Harmonic:
[tex]v(t) = 50\cos(2000\pi t)[/tex]
3rd Harmonic:
[tex]v(t) = 9\cos(6000\pi t)[/tex]
5th Harmonic:
[tex]v(t) = 6\cos(10000\pi t)[/tex]
7th Harmonic:
[tex]v(t) = 2\cos(14000\pi t)[/tex]
Explanation:
The general form to represent a complex sinusoidal waveform is given by
[tex]v(t) = A\cos(2\pi f t + \phi)[/tex]
Where A is the amplitude in volts of the sinusoidal waveform
Where f is the frequency in cycles per second (Hz) of the sinusoidal waveform
Where [tex]\phi[/tex] is the phase angle in radians of the sinusoidal waveform.
1st Harmonic:
We have A = 50, f = 1000 and φ = 0
[tex]v(t) = 50\cos(2\pi 1000 t + 0) \\\\v(t) = 50\cos(2000\pi t)[/tex]
3rd Harmonic:
We have A = 9, f = 3000 and φ = 0
[tex]v(t) = 9\cos(2\pi 3000 t + 0) \\\\v(t) = 9\cos(6000\pi t)[/tex]
5th Harmonic:
We have A = 6, f = 5000 and φ = 0
[tex]v(t) = 6\cos(2\pi 5000 t + 0) \\\\v(t) = 6\cos(10000\pi t)[/tex]
7th Harmonic:
We have A = 2, f = 7000 and φ = 0
[tex]v(t) = 2\cos(2\pi 7000 t + 0) \\\\v(t) = 2\cos(14000\pi t)[/tex]
Note: The even-numbered harmonics have 0 amplitude that is why they are not shown here.