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Andreas93 [3]
4 years ago
9

What educational degree does an engineering technologists hold

Engineering
1 answer:
Pavlova-9 [17]4 years ago
7 0
Engineer technicians typically hold a two-year associates degree, while engineering technologists likewise hold a bachelors degree.
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The ampere draw of a 5000 watt electric heater used on 120 volts is
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Answer:

41.67amps

Explanation:

v*a=w

120*a=5000

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Air expands through a turbine from 10 bar, 900 K to 1 bar, 500 K. The inlet velocity is small compared to the exit velocity of 1
Elis [28]

Answer:

- the mass flow rate of air is 7.53 kg/s

- the exit area is 0.108 m²

Explanation:

Given the data in the question;

lets take a look at the steady state energy equation;

m" = W"_{cv / [ (h₁ - h₂ ) -\frac{V_2^2}{2} ]

Now at;

T₁ = 900K, h₁ = 932.93 k³/kg

T₂ = 500 K, h₂ = 503.02 k³/kg

so we substitute, in our given values

m" = [ 3200 kW × \frac{1\frac{k^3}{s} }{1kW} ] / [ (932.93 - 503.02  )k³/kg  -\frac{100^2\frac{m^2}{s^2} }{2}|\frac{ln}{kg\frac{m}{s^2} }||\frac{1kJ}{10^3N-m}| ]

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Therefore, the mass flow rate of air is 7.53 kg/s

now, Exit area A₂ = v₂m" / V₂

we know that; pv = RT

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A₂ = RT₂m" / P₂V₂

so we substitute

A₂ = {[ (\frac{8.314}{28.97}\frac{k^3}{kg.K})×500 K×(7.54 kg/s) ] / [(1 bar)(100 m/s )]} |\frac{1 bar}{10N/m^2}||10^3N.m/1k^3

A₂ = 0.108 m²

Therefore, the exit area is 0.108 m²

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