The most common type of single phase motor used in HVACR equipment is:
A) Repulsion start Induction run (RSIR). B) Series wound Universal DC motors.
C) Permanent split capacitor (PSC). D) Capacitor start induction run.
C
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What causes crater cracks and how can they be prevented?
What will be an ideal response?
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In a dual-fuel heat pump packaged system, when does the furnace go into use?
A) Once the outdoor temperature drops to the balance point B) Once the outdoor temperature is below the balance point C) Only when it is most economical D) Only during winter conditions
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
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Coil polarity is determined by the ________
A) Direction of lamination B) Saturation direction C) Direction of rotation of the coil windings D) Turns ratio
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