The contacts of a ________ are generally made of fine silver alloy designed for low current.

The contacts of a ________ are generally made of fine silver alloy designed for low current.
 
  A) motor starter B) light-duty relay C) heavy-duty relay D) contactor

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[Ques. 2] Returning water temperature, along with the water flow through the evaporator, are critical variables that will impact the performance of:
 
  A) Air-cooled units. B) Chillers.
  C) Air conditioners. D) Water-cooled units.

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[Ques. 3] Besides the normal electrical functions found on general-purpose multimeters, what additional functions are common on multifunction meters intended for HVACR use?
 
  A) Watts and voltamps B) Temperature, microfarads, and frequency
  C) Volts and ohms D) Volts and amps

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[Ques. 4] Which of these can be used as a switching relay?
 
  A) Heavy-duty relay B) Motor starter C) Contactor D) Light-duty relay

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[Ques. 5] Meter functions commonly used for air-conditioning troubleshooting include:
 
  A) Watts, frequency, and phase angle. B) Frequency, inductance, and impedance.
  C) Volts, amps, and ohms. D) Inductance, capacitance, and impedance.