What is the minimum efficiency of a fossil fuel–burning furnace?

What will be an ideal response?


80 percent.

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The _________ ___________ distributes the air/fuel mixture as evenly as possible to each cylinder of the engine.

Fill in the blank(s) with the appropriate word(s).

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The reason for incandescent lamp surge current when initially switched on is attributed to__________.

A. Lenz's law B. CEMF C. the positive temperature coefficient of tungsten D. the negative temperature coefficient of tungsten

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Technician A says that before performing proprietary reprogramming of an engine ECM, any fault codes should be cleared. Technician A says that in most cases following a proprietary data reprogramming procedure, a verification file has to be uploaded to the OEM data hub. Who is right?

A. Technician A only B. Technician B only C. Both A and B. D. Neither A nor B

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PROBLEM 3.141 A 5.6 kN · m-torque is applied to a hollow shaft having the cross section shown. Neglecting the effect of stress concentrations, determine the shearing stress at points a and b.

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