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2 years ago

If a motorist moves with a speed of 30 km/hr, and covers the distance from place A to place B

Engineering

1 answer:

Sergio039 [100]2 years ago

5 0

Answer:

105 km

Explanation:

The motorist was going 30 km/hr, and it took 3 hours 30 minutes. That's 3.5 hours. 3.5×30=105

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A gas turbine operates with a regenerator and two stages of reheating and intercooling. Air enters this engine at 14 psia and 60

Rzqust [24]

Answer:

flow(m) = 7.941 lbm/s

Q_in = 90.5184 Btu/lbm

Q_out = 56.01856 Btu/lbm

Explanation:

Given:

- T_1 = 60 F = 520 R

- T_6 = 940 = 1400 R

- Heat ratio for air k = 1.4

- Compression ratio r = 3

- W_net,out = 1000 hp

Find:

mass flow rate of the air

rates of heat addition and rejection

Solution:

- Using ideal gas relation compute T_2, T_4, T_10:

T_2 = T_1 * r^(k-1/k)

T_2 = T_4 = T_10 = 520*3^(.4/1.4) = 711.744 R

- Using ideal gas relation compute T_7, T_5, T_9:

T_7 = T_6 * r^(-k-1/k)

T_7 = T_5 = T_9 = 1400*3^(-.4/1.4) = 1022.84 R

- The mass flow rate is obtained by:

flow(m) = W_net,out / 2*c_p*(1400-1022.84-711.744+520)

flow(m) = 1000*.7068 / 2*0.24*(1400-1022.84-711.744+520)

flow(m) = 7.941 lbm/s

- The heat input is as follows:

Q_in = c_p*(T_6 - T_5)

Q_in = 0.24*(1400 - 1022.84)

Q_in = 90.5184 Btu/lbm

- The heat output is as follows:

Q_out = c_p*(T_10 - T_1)

Q_out = 0.24*(711.744 - 520)

Q_out = 56.01856 Btu/lbm

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2 years ago

What major advancement in machine tools occurred in the 1970s and what benefits did it provide? describe in your own words.

mixer [17]

Answer:

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Ammonia vapor becomes irritating to the<br> nose and throat at a concentration of<br> ___ppm

mr_godi [17]

Answer: Even low airborne concentrations (100 ppm) of ammonia may produce rapid eye and nose irritation.

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2 years ago

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ZanzabumX [31]

Did not engineer cables factoring wind shear

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Develop a chase plan that matches the forecast and compute the total cost of your plan. (Negative amounts should be indicated by

vladimir2022 [97]

Answer:

The answer for the question :

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is explained in the attachment.

Explanation:

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