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Kitty [74]
3 years ago
9

Energy transfer in mechanical systems: During steady-state operation, a mechanical gearbox receives 70 KW of input power through

the input shaft and delivers power through the output shaft. Considering the gearbox as a thermodynamic system, the rate of convection heat transfer generated during its operation is defined by: where h 0.171 kW/m2-K is the convection heat transfer coefficient, A 1.0 m is the outer surface area of the gearbox, T 300 K is the temperature of the outer surface, and T 293 K is the temperature of the surrounding air. For the gearbox, evaluate the heat transfer rate, 2, and the power delivered through the output shaft, W.

Engineering
1 answer:
Degger [83]3 years ago
3 0

Answer:

Heat transfer rate(Q)= 1.197kW

Power output(W)=68.803kW

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It is safe to keep a cylinder next to the actual welding or cutting operation, true or false?
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Answer:

Explanation:

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3 years ago
Tech a says that mass airflow sensors determine mass airflow based on engine speed and manifold pressure. tech b says that some
Westkost [7]

Since Tech B says that some airflow sensors use a hot wire to determine mass airflow he is the only one that is correct.

<h3>How does a mass airflow sensor work?</h3>

An MAF is one that consist of two sensing wires. One is  known to be heated by the use of electrical current, while the other is not.

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Tech A saying that mass airflow sensors determine mass airflow based on engine speed and manifold pressure is incorrect because that is not the role of the mass airflow sensors.

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As air flows across the heated wire, it cools down. Hence, Since Tech B says that some airflow sensors use a hot wire to determine mass airflow he is the only one that is correct.

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5 0
2 years ago
A journeyman electrician with 16 years experience on-the-job was removing metal fish tape from a hole at the base of a metal lig
Romashka-Z-Leto [24]

Answer: He should have ensured the following before beginning work;

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3) Technicians and Electrical workers must be instructed to know the unsafe conditions associated with their work.

Explanation:

We cannot assume that because he is experienced he cannot be prone to all this wrong practices. Humans tend to think that with experience people become less prone to errors and study has shown that this is not true. Safety must be a priority.

5 0
3 years ago
If E = 94.2 mJ of energy is transferred when Q = 1.66 C of charge flows through a circuit element, what is the voltage across th
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Answer:

V = 56.8 mV

Explanation:

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6 0
3 years ago
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