lesson 5 Squirrel- Cage motors
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The ? is the stationary part of an AC motor; it consists of a laminated iron core and windings (or coils) that convert electrical energy to the energy of a magnetic field. | show 🗑
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show | shaft
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show | true
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? has a high starting torque, low starting current, and low slip. | show 🗑
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show | shorting ring
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? motors are suitable for equipment with very high-inertia starts, such as cranes and hoists. | show 🗑
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A squirrel-cage motor is very similar to a ? , but with a rotating secondary. | show 🗑
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? motors are designed for a broad variety of applications, such as in HVAC applications providing power for fans and blowers and in industrial applications providing power for pumps. | show 🗑
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The left-hand coil rule describes the ? of the magnetic poles created by the current flow. | show 🗑
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show | right-hand motor
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true/false When troubleshooting a motor control circuit, the voltage at the transformer secondary side should be checked if the voltage reading at the control transformer primary is correct. | show 🗑
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When troubleshooting a 3-phase motor, the motor windings should be checked for any opens or shorts by using a DMM set to measure ? . | show 🗑
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show | transformer
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true/false The bars of Design B motors are narrow and are placed deep in the iron, which increases the reactance and raises the current, while maintaining normal starting torque. | show 🗑
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The rotor's magnetic field and the stator's magnetic field interact to create ? . | show 🗑
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