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BabaBlast [244]
2 years ago
14

4. Two technicians are discussing the evaporative emission monitor. Technician A says that serious monitor faults cause a blinki

ng malfunction indicator lamp
(MIL) or even an engine shutdown. Technician B says that the engine computer will run the EVAP monitor when fuel level is within 15 to 25 percent and the TP
sensor position is between 9 and 10 percent. Who is correct?
O A. Neither Technician A nor B
O B. Both Technicians A and BN
O C. Technician A
OD. Technician B
Engineering
1 answer:
snow_lady [41]2 years ago
3 0

Answer:

The correct option is;

Neither Technician A nor B

Explanation:

The evaporative emission monitor or Evaporaive Emission Control System EVAP System monitors enables the Power Control Module of the car to check fuel system leak integrity and the vapor consumption efficiency during engine combustion

It is a requirement of EPA on cars to check the emission of smug forming evaporates from cars

Serious monitor faults can cause the turning on of the check engine lights and the vehicle will not pass OBD II test, but it will not lead to engine shutdown

It runs when the engine is 15 to 85% full and the TP sensor is between 9% and 35%.

Therefore, the correct option is that neither Technician A nor B are correct.

You might be interested in
The radial component of acceleration of a particle moving in a circular path is always:________ a. negative. b. directed towards
lesya [120]

Answer:

d. all of the above

Explanation:

There are two components of acceleration for a particle moving in a circular path, radial and tangential acceleration.

The radial acceleration is given by;

a_r = \frac{V^2}{R}

Where;

V is the velocity of the particle

R is the radius of the circular path

This radial acceleration is always directed towards the center of the path, perpendicular to the tangential acceleration and negative.

Therefore, from the given options in the question, all the options are correct.

d. all of the above

7 0
2 years ago
A water pump increases the water pressure from 15 psia to 70 psia. Determine the power input required, in hp, to pump 1.5 ft3/s
svetoff [14.1K]

Answer:

11.52 hp

Explanation:

<u><em>Givens: </em></u>

p_1  = 15 pisa

p_2  = 70 pisa

V_ol=1.5 ft^3/s

<u><em>Solution:  </em></u>

Note: m = p x V_ol (assuming in compressible flow —> p =const)  

The total change in the system mechanical energy can be calculated as follows,  

Δ e= (p_2 - p_1 ) /p

The power needed can be calculated as follows

P = W =mΔ e  = p x  V_ol x(p_2 - p_1 ) /p

  = V_ol x (p_2 - p_1 )

  = 44 pisa. ft^3/s

  = 44 x (1 btu/5.404pisa. ft^3) x (1 hp/0.7068btu/s)

  = 11.52 hp

3 0
2 years ago
A 10-mm drill rod was heat-treated and ground. The measured hardness He was found to be 300 Brinell. Estimate the endurance stre
lesya [120]

Answer:

The endurance strength for the rod is 434.6 MPa

Explanation:

Since the rod is used in rotating bending, we need to use Marin equation given by

S=k_ak_bS'_e

Here S stands for the endurance strength for rotating  bending, S'_e is the endurance strength, and k_a \text{ and } k_b are the parameters for Marin surface modification factor.

Endurance strength.

We can start finding the endurance strength, from the directions we know that the hardness H_e was found to be 300 Brinell, thus for such value we can find the ultimate tensile strength using

S_{ut}=3.41H_e

Replacing the hardness we get

S_{ut}=3.41(300) MPa \\ S_{ut}=1023 MPa

Now since the ultimate tensile strength has a value less than 1400 MPa, we can find the endurance strength using

S'_e =0.5S_{ut}

Replacing the tensile strength we get

S'_e=0.5(1023) MPa \\ S'_e = 511.5 MPa

Parameters for Marin surface modification factor.

From the directions we know that the drill rod has a ground surface finish, so then from tables we get

a=1.58 \text{ and } b = -0.085

Thus the surface factor will be

k_a=a(S_{ut})^b

Replacing values and the ultimate tensile strength

k_a=(1.58)1023^{-0.085}\\k_a=0.8766

Then we can find the rotating shaft factor, for a diameter of 10 mm, we can use the equation

k_b=1.24d^{-0.107}

Replacing the diameter we get

k_b=1.24(10)^{-0.107}\\k_b=0.9692

Estimating endurance strength for rotating shaft.

We can replace now all values we have found in Marin equation.

S=k_ak_bS'_e

S=(0.8766)(0.9692)(511.5) MPa

S=434.6 MPa

Thus the endurance strength for the rod is 434.6 MPa

3 0
2 years ago
A cylinder in space is of uniform temperature and dissipates 100 Watts. The cylinder diameter is 3" and its height is 12". Assum
Gnesinka [82]

Answer:

T= 394.38 K

Explanation:

The solution and complete explanation for the above question and mentioned conditions is given below in the attached document.i hope my explanation will help you in understanding this particular question.

7 0
2 years ago
Describe an engineering advance that has led to greater knowledge about the solar system
storchak [24]
Development of the space shuttle to allow humans to explore the moon
8 0
2 years ago
Read 2 more answers
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