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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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Answer:

Gs = 2.647

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Explanation:

We know that moist unit weight of soil is given as

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where,  \gamma_m = moist unit weight of the soil

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\gamma_w = unit weight of water = 9.81 kN/m3

From data given we know that:

At 50% saturation,\gamma_m = 16.62 kN/m3

puttng all value to get Gs value;

16.62= \frac{(Gs+0.5*e)\timees 9.81}{(1+e)}

Gs - 1.194*e = 1.694 .........(1)

for saturaion 75%, unit weight = 17.71 KN/m3

17.71 = \frac{(Gs+0.75*e)\times 9.81}{(1+e)}

Gs - 1.055*e = 1.805 .........(2)

solving both  equations (1) and (2), we obtained;

Gs = 2.647

e = 0.7986

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3 years ago
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