The stationary magnet of a DC motor is represented by the _____.

a. armature
b. field poles
c. commutator
d. rotor


b. field poles

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Plants in the ____ category are line-dominant

a. linear c. hanging b. columnar d. upright

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The difference between the evaporator temperature and the suction line temperature at the coil outlet is:

a. superheat b. latent heat c. artificial heat d. extended heat

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Select the abbreviation for a Dryseal pipe thread.

A. DPT B. NPTF C. NPT D. none of the above

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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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