Module 26311- Motor Controls Midterm Exam Fully Solved.a relay designated as a 3PDT-SB relay ______ - Answer c. has three NO and three NC(normally closed) contacts the minimum voltage needed to keep a relay coil energized is called the ____ voltage - Answer
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contactors and motor starters categorized for use in low-duty cycle applications where the control requirements are well defined are called ____ - Answer c. definite-purpose contactors/ motor starters in figure 1, the component marked 1 is an ____ - Answer a. overload contact in figure 1, the components marked 2 in the figure are - Answer d. melting alloy heater assemblies if the heater in a fixed IEC bimetallic overload relay fails, _____ - Answer c. the entire overload relay must be replaced the nameplate on a motor indicates that the motor has an FLC of 13A and a service factor (SF) of 1.15. the additional current this motor can safely handle for intermittent power demands is ______ - Answer c. 1.95A all of the following are accessories that can be added to basic contactors of magnetic motor starters to expand their capability except______ - Answer d. a bi-metallic overload module when calculating the inrush VA for a control transformer, use the inrush VA for all of the following control circuit devices except the _____ - Answer a. limit switch when the start and stop pushbuttons mounted in two or more control stations are connected into a motor control circuit, the start buttons must be connected in _____, and the stop in ________ - Answer a. parallel, series in figure 2, a temperature switch is represented by the symbol marked___ - Answer a. a in figure 2, a pressure switch is represented by the symbol marked___ - Answer d. f