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shusha [124]
3 years ago
10

Welding never causes residual stresses in the work piece, which may result in distortion stress corrosion cracking, and reduced

fatigue life. (True / False)
Engineering
1 answer:
umka21 [38]3 years ago
7 0

Answer:

False.

Explanation:

Welding due to the thermal stress caused by the piece and large temperature changes can cause residual stresses in the material due to the efforts that are manifested in it. These efforts can cause microfractures, weakened areas and also a stress and changes in the crystalline structure that does not allow it to maintain the initial properties of the material and be prone to subsequent failures and corrosion.

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For a refrigerator, COP<1 a) True b) False
WINSTONCH [101]

Answer:

False

Explanation:

COP is Coeficient of performance, it relates useful heat moved with work consumed, it is used in refrigerators and heat pumps.

For refrigerators the useful heat is the one extracted from the cold reservoir. Therefore:

COP = \frac{Tcold}{T.hot - Tcold}

This often exceeds 1.

4 0
3 years ago
To make an even better electrical junction, what should you do?
docker41 [41]

Answer:

A:Solder it.

Explanation:

Hopefully this helps!

4 0
3 years ago
A/an _____________ comes on if one of the dual hydraulic brake systems should fail or, in some vehicles, if the brake fluid is l
jolli1 [7]

Answer: Dash light

Explanation:

A dash light, usually labeled "BRAKE" will illuminated if a braking system fails, or if the brake fluid is low.

3 0
3 years ago
Kieran and Kurt spend most of their day performing physical labor, aligning materials, and inspecting projects for quality and s
xxMikexx [17]

Answer:

Kieran is a Carpenter, and Kurt is a Drafter

Explanation:

Among all the professions listed, Kurt can only possibly be a Drafter.  A Drafter is an engineering technician who makes detailed technical drawings or plans for machinery, buildings, electronics, infrastructure, sections, etc. Drafters make use of computer software and manual sketches to convert the designs, plans, and layouts of engineers and architects into a set of technical drawings. All the other professions will at some point need for the professional to stand and work at an height above the ground except for a drafter, whose feet will remain on the ground at almost all times.

5 0
3 years ago
Read 2 more answers
To compute the energy used by a motor, multiply the power that it draws by the time of operation. Con- sider a motor that draws
ehidna [41]

Answer:

E=52000Hp.h

E=38724920Wh

E=1.028x10^11 ftlb

Explanation:

To solve this problem you must multiply the engine power by the time factor expressed in h / year, to find this value you must perform the conventional unit conversion procedure.

Finally, when you have the result Hp h / year you convert it to Ftlb and Wh

E=(12.5hp)(\frac{16h}{day} )(\frac{5 days}{week} )(\frac{52week}{year} )\\

E=52000Hp.h

E=52000Hp.h(\frac{744.71Wh}{Hp.h} )\\

E=38724920Wh

E=52000Hph(\frac{1977378.4  ft lb}{1Hph}

E=1.028x10^11 ftlb

3 0
3 years ago
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