Exam 13: Installing Control Systems and Reading Large Schematic Diagrams

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The notation (2300V 3 θ\theta 60 Hz) means that the motor is ____-phase.

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B

Current transformers produce an output current of 5 amperes under a(n) ____________________ condition.

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short circuit

A(n) ____________________ box indicates terminal numbers for the relay and these numbers should not be confused with wire numbers.

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square

A ____ switch permits power to be supplied to the circuit or not.

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In the schematic, the connections made inside the MCC are shown with ____ lines.

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What is the meaning of the notation (200A 5000V DISCONNECT SWITCH)?

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Terminal strips are used as connection points between the control wiring inside the cabinet and inputs or outputs to the machine or control panel.

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What is the advantage of connecting components to a terminal strip?

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What letter indicates a connection between terminals?

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What is the primary difference between the point-to-point and terminal strip methods?

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____________________ diagrams can be misleading in that they show all components grouped together.

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Some control components, such as limit switches, photodetectors, or flow switches, may be located on the machine itself, while other components such as control relays and motor starters may be located inside a cabinet.

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Why is practice important for reading schematic diagrams?

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