When is the igniter energized on an induced draft furnace that uses hot surface ignition?

A) At the same time the induced draft blower is energized
B) After the draft switch closes to prove the draft
C) At the same time the gas valve is energized
D) On the initial call for heat


B

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If the elevation is 3000 m, the pressure at a point where the gage pressure is 200 mm of mercury is nearest (?Hg = 13.6 ?water):

A) 97 kPa B) 109 kPa C) 127 kPa D) 141 kPa

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Suggest the appropriate safety gear for an arborist

What will be an ideal response?

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How can you identify the high-voltage system in most hybrid vehicles?

What will be an ideal response?

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Smoothly feathered inside corner joints are achieved by using a(n) _____

a. angled trowel b. corner plow c. pointing trowel d. corner finisher

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