1.
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Explain principles of operation for three phase motors. (I)
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2.
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Identify Wye and Delta types of wiring diagrams and explain high/low
voltage for each. (II)
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3.
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Explain the terms "synchronous speed " and major factors determining
amounts of induced voltage into rotors. (III)
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4.
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Explain the function of torque and how it is produced in motors. (IV)
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5.
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Using the data on motor nomenclature plates and the National
Electrical Code (NEC), calculate motor current draw. (V)
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6.
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Explain the operation of specific controls in residential air
conditioning and heating pumps including thermostats, low
pressure/high pressure switches, defrost control systems and reversing
valves. (VI)
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7.
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Translate residential heating/cooling equipment line wiring diagrams
to ladder diagrams. (VII)
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8.
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Given electrical components representing specific heating/cooling
systems, write sequences of operations. (VIII)
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9.
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Draw ladder diagrams into line diagrams for designing control panels.
(IX)
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10.
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Using the theory of electrical circuits, write a procedure for
evaluating electrical problems, including appropriate safety
procedures. (X)
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