3 years ago

Choose the correct word or phrase to complete the sentence to explain human intervention in a machine system.

Engineering

1 answer:

maksim [4K]3 years ago

6 0

Answer:

Fully Automated

Periodic Maintenance Activities

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A 50-lbm iron casting, initially at 700o F, is quenched in a tank filled with 2121 lbm of oil, initially at 80o F. The iron cast

insens350 [35]

Answer:

a) The final equilibrium temperature is 83.23°F

b) The entropy production within the system is 1.9 Btu/°R

Explanation:

See attached workings

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3 years ago

Which type of engineers were the designers of the Great Pyramids of Egypt and the Great Wall of China?

Gemiola [76]

I think it’s structural engineers but still check with the others

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3 years ago

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What is the thermal efficiency of this regeneration cycle in terms of enthalpies and fractions of total flow?

irga5000 [103]

Answer:

$\eta =\dfrac{(h_3-h_4)-(h_2-h_1)}{(h_3-h_5)}$

Explanation:

generally regeneration of cycle is used in the case of gas turbine. due to regeneration efficiency of turbine is increased but there is no effect on the on the net work out put of turbine.Actually in regeneration net heta input is decreases that is why total efficiency increase.

Now from T-S diagram

$W_{net}=W_{out}-W_{in}$