The match of the motor and compressor inside a hermetic compressor:
A) Is typically 1 hp per ton for nearly all applications.
B) Is specific for the application of the compressor.
C) Is generally not critical, allowing a single compressor to cover a wide range of applications.
D) Is made in the field by the installing technician.
B
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An evaporative condenser:
A) Works by evaporating refrigerant to cool the condenser coil. B) Cools air through the evaporation of refrigerant inside the condenser. C) Is really just another name for evaporator. D) Works by evaporating water to cool the condenser coil.
Technicians always perform this action first when working on an electrical circuit in a residential setting:
A) Turn off power at the service panel. B) Test for voltage at the affected unit. C) Call the power company. D) Remove the covers from the affected unit.
Single-phase motors that use a centrifugal switch to disconnect the start windings cannot be used with variable voltage control. This limits the type of induction motors to capacitor-start capacitor-run and ____ motors.
A. capacitor-stop B. resistor-stop C. resistor-start resistor-run D. shaded-pole
Which of the following represents the effective value of the current supplied by the fundamental component of the nonsinusoidal source?
A. In B. IDC C. IT D. I1