23 Multiple Choice 2 points What must a technician do to accurately check the resistance of a fan motor that is connected to the control circuit with the compressor motor? O Remove the fan from the motor Isolate the motor from the other circuits by disconnecting the motor leads Turn the thermostat to off Check the resistance of the motor with the circuit energized 24 Multiple Choice 2 points Which of the following choices lists the three steps that are involved in correcting a problem with an HVAC system on a typical service call in the correct order? O Isolate the problem, repair the problem, diagnose what the system is doing wrong O Repair the problem, test all electrical components and circuits, consult with the customer Diagnose what the unit is doing wrong, isolate the problem, repair the problem OO Test the compressor, check for low-voltage control signals, check the capacitor 25 Multiple Choice 2 points What procedure is one of the easiest ways to check the condition of the switches in an energized electrical circuit? O Millivolt check Current check O Resistance check O Hopscotching 26 Multiple Choice 2 points What is the condition of a single-phase compressor if a technician reads a resistance of infinity (OL) between the "common" and "run" terminals of a hermetic compressor? O Open run winding Good run winding O Closed internal overload O Shorted run winding 27 Multiple Choice 2 points Which of the following electrical test instruments will a service technician need to test and diagnose problems with electrical devices and systems? Ammeter All of the choices are correct Ohmmeter O Voltmeter