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kari74 [83]
3 years ago
12

One of the best ways to find a vacuum leak on a speed-density fuel-injection system is to read the intake air controller (LAC) c

ount, or percentage, with a scan
tool. Normal IAC percentage is usually 15 to 25. A reading of less than indicates vacuum leak.
O A.5
OB. 10
O C.25
O D. 15
Engineering
2 answers:
Zigmanuir [339]3 years ago
6 0

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 speed
  • MAP sensor interprets it as an additional load on the engine
  • Injector pulse width increases
  • IAC count decreases, trying to reduce engine speed to a previously set value
  • Air-fuel mixture remains the same
ioda3 years ago
5 0
A should be the correct answer
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Find the differential and evaluate for the given x and dx: y=sin2xx,x=π,dx=0.25
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By applying the concepts of differential and derivative, the differential for y = (1/x) · sin 2x and evaluated at x = π and dx = 0.25 is equal to 1/2π.

<h3>How to determine the differential of a one-variable function</h3>

Differentials represent the <em>instantaneous</em> change of a variable. As the given function has only one variable, the differential can be found by using <em>ordinary</em> derivatives. It follows:

dy = y'(x) · dx     (1)

If we know that y = (1/x) · sin 2x, x = π and dx = 0.25, then the differential to be evaluated is:

y' = -\frac{1}{x^{2}}\cdot \sin 2x + \frac{2}{x}\cdot \cos 2x

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dy = \left(\frac{2\pi \cdot \cos 2\pi -\sin 2\pi}{\pi^{2}} \right)\cdot (0.25)

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By applying the concepts of differential and derivative, the differential for y = (1/x) · sin 2x and evaluated at x = π and dx = 0.25 is equal to 1/2π.

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