720 Logic Controls Exam questions and answers Graded A+
720 Logic Controls Exam questions and answers Graded A+ Refer to figure 1. If the car were running up in response to a third floor call, when would the U relay de-energize? When the 3C-3 contact opens Refer to figure 1. What is the purpose of contact M-1? Non-interference Refer to figure 2. What actuates the P.M. switch? Vane or fin How must a latching relay be reset? Energize the reset coil If the synchronous selector ratio were 40 to 1, and the car moved 20 feet, how far will the selector have moved? 6 inches Synchronous selectors may be driven by which o
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720 logic controls exam questions and answers grad