unit 17

two

Consequent pole motors that are intended to operate with three speeds contain ____ separate stator windings.

phase rotation meter

It is possible to determine the direction of rotation of a motor before power is connected to it with the use of a ____ meter.

self-synchronous

Selsyn motors are used to provide position control and angular feedback information in industrial applications. The word selsyn is a contraction derived from ____.

differential

The ____ selsyn is used to produce the algebraic sum of the rotation of two other selsyn units.

1.732

The line current supplying a squirrel-cage motor can be computed using the formula: I(LINE) = VA / (E(LINE) x ____)

150% -200%

The pull-out torque for most synchronous motors will range from ____ of rated full-load torque.

amortisseur

The rotor of a synchronous motor contains a set of squirrel-cage bars similar to those found in a type A rotor. This set of squirrel-cage bars is used to start the motor and is known as the ____ winding.

120

The rotor of a wound rotor motor is constructed by winding three separate coils on the rotor ___ degrees apart

induced

The squirrel-cage motor is an induction motor, which means that the current flow in the rotor is produced by ____ voltage from the rotating magnetic field of the stator.

1500

What is the synchronous speed of a four-pole motor connected to 50 Hz?