3 years ago

Both model building codes and NFPA __________ can be used to determine the type of construction used in a building.

Engineering

1 answer:

Alex777 [14]3 years ago

8 0

Answer:

Both model building codes and NFPA 220 can be used to determine the type of construction used in a building.

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1. Present the pros and cons of an employer participating in the OSHA Voluntary Protection Program (VPP) or the Star Program. Ba

algol13

Answer:

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2 years ago

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A power of 100 kW (105 W) is delivered to the other side of a city by a pair of power lines, between which the voltage is 12,000

OLga [1]

Answer:

I = 8.3 Amp

potential drop = 83 V

Explanation:

Power = 100 KW

V = 12,000 V

R = 10 ohms

Calculate current I in each wire:

P = I*V

I = P / V

I = 100 / 12 = 8.333 A

Calculate potential drop in each wire:

V = I*R

V = (8.3) * (10)

V = 83 V

4 0

3 years ago

Thank you very much this helped a lot

Len [333]

Answer:

Your welcome i guess

Explanation:

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3 years ago

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Which of the following fluid power systems is portable and human-scale?

meriva

Answer:

a fluid power engine okk done please

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2 years ago

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An inventor claims to have developed a food freezer that at steady state requires a power input of 0.25 kW to extract energy by

Serga [27]

Answer:

investor claim is acceptable

Explanation:

given data

Win = 0.25 kW

Qc = 3000 J/s = 3kW

Th = 293 K

Tc = 270 K

solution

we get here coefficient of performance of cycle is

coefficient of performance = $\frac{Qc}{Win}$ ..................1

put here value and we get

coefficient of performance = $\frac{3}{0.25}$

coefficient of performance = 1.2

and

coefficient of performance of ideal refrigeration is

coefficient of performance = $\frac{Tc}{Th-Tc}$ ..................2

coefficient of performance = $\frac{270}{293-270}$

coefficient of performance = 11.74

and

we can see here that coefficient of performance of ideal refrigeration is is more than real cycle coefficient of performance

so investor claim is acceptable

6 0

3 years ago