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Olin [163]
4 years ago
7

When you first start a car after it has been sitting for more than an hour, it pollutes up to ......times more than when the eng

ine is warm.
10

2

20

5
Engineering
2 answers:
lesya [120]4 years ago
6 0
20 time more then when it’s warm
Ainat [17]4 years ago
5 0
Has to be at most 20
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Which step in reverse engineering can take place once the general information about the purpose and
Liono4ka [1.6K]

Answer:

Visual analysis

Explanation:

Reverse engineering is the reproduction of another manufacture's product after proper examining the way it was constructed or designed and its composition.

The stages of reverse engineering are;

  • Implementation recovery that involves quick learning about application and preparation of an initial model
  • Design recovery where you undo the previous database mechanics structures and change to recovery foreign main references.
  • Analysis recovery that removes design artifacts and eliminate any errors in the model.

The step of visual analysis involves taking something apart and analyzing its working in details. Here the items observed are;

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6 0
3 years ago
A plate clutch is used to connect a motor shaft running at 1500rpm to shaft 1. The motor is rated at 4 hp. Using a service facto
vazorg [7]

Answer:

(M_t)_{rated}=61.11lb-in

Explanation:

speed of motor (N)=1500 rpm

power=4 hp = 4 \times 0.7457 =2.9828 KW

service factor(k)= 2.75

now,

KW=\frac{2\pi n M_t}{60 \times 10^6} \\2.9828=\frac{2\pi \times 1500 M_t}{60 \times 10^6}\\M_t=\frac{2.9828\times 60 \times 10^6}{2\pi \times 1500 }

M_t= 18,989.09 \ N-mm= 168.06 lb-in

torque rating

(M_t)_{design}=k_s\times (M_t)_{rated}\\168.06= 2.75\times (M_t)_{rated}\\(M_t)_{rated}=\frac{168.06}{2.75} \\(M_t)_{rated}=61.11lb-in

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4 years ago
A flat plate is oriented parallel to a 15 m/s airflow at 20 o C and atmospheric pressure. The plate is 1 m long in the flow dire
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Please check attachment for complete solution, plate diagram and step-by-step explanation

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3 years ago
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3 years ago
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Zanzabum

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