Exam 21: Braking , Consequent Pole Motors, Variable Voltage and Magnetic Clutches

A three-phase two-pole motor contains ____ actual poles.

When a generator produces electrical power, it produces ____ torque.

Single-phase motors that use a centrifugal switch to disconnect the start windings cannot be used with variable voltage control. This limits the type of induction motors to capacitor-start capacitor-run and ____ motors.

One type of alternating current motor that can use variable voltage for speed control is the ____________________ or AC series motor.

What is one advantage of consequent pole motors over some others types of variable speed alternating current motors?

Name three methods that can be used to provide braking for a motor.

Many small single-phase motors change speed by varying the amount of voltage applied to the motor. This method changes the speed of the rotating magnetic field of the motor.

Give an overview of universal motors.

A direct-current machine can be used as either a motor or generator.

Consequent pole motors intended to operate with four speeds use ____ windings.

The most accurate method of plug stopping a motor is with a ____.

A two-speed motor will contain six T leads in the terminal connection box.

When plugging, as a general rule, the reversing contactor is of a larger size than the forward contactor because of the increased plugging current.

There are different methods of obtaining a variable AC voltage. One method is with the use of an autotransformer with a ____ tap.