Split Phase AC Motors 14/18

The phases of the three-phase power supplied by the power company are __________ degrees out of phase with each other.

120

The frequency of the AC electricity in most European countries is __________.

50 Hz

The device that is used on a split-phase motor to disconnect the start winding when a predetermined speed has been reached is a __________.

Centrifugal switch

The amount two electrical waveforms are out of phase is measured in __________.

Degrees

Which of the following is an application of a split-phase motor?

Fan Business Machine Centrifugal Pump

Which of the following is an advantage of a split-phase motor?

Is available at a low cost

Which of the following is a type of single-phase AC motor?

Permanent-capacitor Capacitor-start Split-phase

The effective value of AC voltage is also called the __________ voltage.

RMS (Root Mean Square)

Which of the following is not a method that can be used to reverse the rotation of a split-phase motor?

Reverse the power leads

In which of the split-phase motor windings will the current start to flow first?

Start winding Run winding

Which of the following is a category of AC motors?

Three-phase

The rate at which the electrical voltage or current cycle repeats is called __________.

frequency

When two phases of electricity do not start and end at the same time, they are said to be __________.

in-phase

AC electricity flowing in a particular wire is called a __________.

phase

The main set of windings in a split-phase motor is called the __________.

run windings

The waveform that is produced by alternating current looks like a __________.

sine wave

The difference between the synchronous speed and the actual speed at which an AC motor will run is called __________.

slip

The speed at which the rotor/shaft of an AC motor must rotate to exactly match the speed of the rotating magnetic field is called __________.

synchronous speed