Question: 51 Multiple Choice 1 point What is the maximum recommended voltage drop for a branch circuit? 5% 3% 25% 10% 52 Multiple Choice 2 points

51 Multiple Choice 1 point What is the maximum
51 Multiple Choice 1 point What is the maximum recommended voltage drop for a branch circuit? 5% 3% 25% 10% 52 Multiple Choice 2 points Actuators on pneumatic control systems are used to operate Air dampers All of the choices are correct Chilled water valves Hot water valves 53 Multiple Choice 1 point Which of the following is used to supply air flow across the evaporator coil on residential split-system air conditioning systems? O Oil furnace All of the choices are correct Gas furnace Fan-coil unit 54 Multiple Choice 1 point Which choice best describes the condition of a control transformer if the resistance of the primary winding is 25 ohms, and the secondary winding is one ohm? O Good Shorted Bad Open 55 Multiple Choice 2 points Sequencers are commonly used to control electric resistance heaters and they act much like a O Thermal overload Time-delay relay Switching relay O Contactor

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