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3 years ago

Which of the following is MOST likely to be true about a service manager?

Engineering

1 answer:

forsale [732]3 years ago

7 0

Answer:

a.they are responsible for the function of the service department

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Electric Resistance Heating. A house that is losing heat at a rate of 50,000 kJ/h when the outside temperature drops to 4 0C is

ryzh [129]

Answer:

a) $\dot W = 0.978\,kW$ , b) $I = \left(50000\,\frac{kJ}{h} \right)\cdot \left(\frac{1}{3600}\,\frac{h}{s}\right)\cdot \left(\frac{1}{COP_{real}} \right) - 0.978\,kW$

Explanation:

a) The ideal Coefficient of Performance for the heat pump is:

$COP_{HP} = \frac{T_{H}}{T_{H}-T_{L}}$

$COP_{HP} = \frac{298.15\,K}{298.15\,K - 277.15\,K}$

$COP_{HP} = 14.198$

The reversible work input is:

$\dot W = \frac{\dot Q_{H}}{COP_{HP}}$

$\dot W = \left(\frac{50000\,\frac{kJ}{h} }{14.198} \right)\cdot \left(\frac{1}{3600}\,\frac{h}{s} \right)$

$\dot W = 0.978\,kW$

b) The irreversibility is given by the difference between real work and ideal work inputs:

$I = \dot W_{real} - \dot W_{ideal}$

$I = \left(50000\,\frac{kJ}{h} \right)\cdot \left(\frac{1}{3600}\,\frac{h}{s}\right)\cdot \left(\frac{1}{COP_{real}} \right) - 0.978\,kW$

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4 years ago

Aper Engineering Unit 3: Engineering Product Design and Manufacture Part B

Aliun [14]

JUST PUT THE BRICK ON THE OTHER

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3 years ago

Which of these are ways to protect yourself from electrical hazards?

shtirl [24]

Answer:

Understand how a GFCI can protect you and Use tools and power cords safely. I do believe

Explanation:

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4 years ago

What is the difference between a stepped and a non-stepped ECT circuit?

galina1969 [7]

Answer:

A stepped circuit is designed in the engine coolant temperature (ECT) sensor within a powertrain control module (PCM) to increase the sensor's accuracy. A simple non-stepped ECT sensor circuit has a specific resistance which increases or decreases according to the changes in engine coolant temperature.

Explanation:

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3 years ago

A layer of metal is evaporated on both sides of the 0.2 mm thick paper. what will be the electric field strength between the met

Mumz [18]

Answer:

<h2>6.0 is the answer , can you please thank me plz</h2>

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3 years ago