Most of the energy we use comes from something we already have on Earth. The only "new" energy we get comes from the ____________________.

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


sun

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Standard welding ____ are used to indicate the welds required.

A. objects B. marks C. symbols D. indicators

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There is a turns ratio of ____________________ between each primary winding and the secondary winding.

What will be an ideal response?

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The evaporator ____________________ heat.

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

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A 220-V electric heater has two heating coils that can be switched such that either coil can be used independently or the two can be connected in series or parallel, for a total of four possible configurations. If the warmest setting corresponds to 2,000-W power dissipation and the coolest corresponds to 300 W, find the resistance of each coil.

Find: a) The resistance of each coil b) The power dissipation of each of the other two possible arrangements.

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