Delmar's Textbook of Electricity Unit 34 Single Phase Motors

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90 degrees out of phase with each other

Maximum torque is produced when current between the start winding and run winding are _______

120 or 24 volts

Single phase motors are generally designed to run on _____

Home appliances such as air conditioners, well pumps, refridgerators and fans

Single phase motors are used almost exclusivly to run _____

Resistance start induction run Capacitor start induction run Capacitor start capacitor run

Split phase motors fall into three general classifications

A rotating magnetic field

Split phase motors operate on the principal of _____.

A two phase power system

Split phase motors split the current flow through two separate windings to simulate _______

Run winding

The ______ winding is made of relatively large wire and is placed in the bottom of the stator core.

Start winding

The ______ winding is made of small wire and is placed near the top of the stator core

The strength of the magnetic field of the stator Strength of the magnetic field of the rotor Phase angle difference between current in the start and run winding

The amount of torque produced by a split phase motor is determined by three factors

Lags the applied voltage due to inductive reactance

The current flow in the run winding of a split phase motor _______ the applied voltage due to ______

More inductive reactance and less resistance

The run winding is made of larger wire placed near the bottom of the core, this gives it more _______ and less ______

Synchronous speed

The speed of the rotating magnetic field is called _____

More resistance and less inductive reactance

The start winding is made of smaller wire, so it has more ________ and less ________.

The start winding and the run winding

The stator of a split phase motor contains two separate windings

Number of poles Frequency of applied voltage

Two factors determine the synchronous speed of a split phase motor.


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