Electrical 2

A Delta connected set of windings has a phase voltage of 100 V what is the line voltage

100 V

Three phase voltages are blank out of phase with each other

120°

A Delta connected set of windings has a phase current of 10 A what is the line current

17.32 A

To SCRC other create what

A Triac

What machines operate on the same principles of electromagnetic induction as DC generators but they have no commutator

Alternators

To reverse the direction of rotation of a three phase motor reverse blank

Any 2 leads

The squirrel cage rotor is constructed of blank and end Blank embedded in steel laminations

Bars rings

In the consequent pool motor if the number of polls is double the motor Speed will blank

Cut in half

The frequency of the current in a squirrel cage rotor blank as the rotor approaches synchronous speed

Decreases

Line voltage in phase voltage are the same in the blank connection

Delta

In a three phase transformer connections the primary leads are labeled with the letter blank and the secondary leads are labeled with the letter blank

HX

The wound rotor induction motor is popular industry because it has blank starting torque and blank starting current

Hi lo

What function is performed by dielectric oil

Insulating prevent moisture formation provides cool

The revolving armature type of alternator is capable of blank power output and is therefore blank often use than the revolving field type

Less less

In three phase connection what is the voltage measured between the lines

Line voltage

In three phase power systems delivered power blank

Never falls to zero

What is one factor that controls the output frequency of an alternator

Number of stater poles and rotor rotation speed

When calculating the power of a pure resistive load the voltage and current are in phase with each other in the power factor is blank

One

The main power distribution system of a large industrial plant is generally show using a blank diagram

One line

Some motors are constructed so they will operate on either of the two voltages when they're connected to operate on the lower of the two voltages the phase windings are connected and blank

Parallel

In a three phase connection what is the voltage measured measured across one winding

Phase voltage

Some motors are constructed so they will operate on either of two voltages when they are connected to operate the higher of the two voltages the phase windings are connected in blank

Series

When a squirrel cage motor is first started the value of the current draw is blank

Several times the running current

Three lines supply power to a three phase motor if one of these lines should open the motor will continue to single phase power this condition is known as

Single phasing

Power is Carrie to the outside circuit of a revolving armature type of alternator via brushes riding against the

Slip rings

In a Wi-Fi connected system the line voltage is higher than the phase voltage by a factor of what

Square root of three

The non-rotating part of a revolving field type alternator is called the blank

Stater

If a three phase load is a pure reactive load then the power calculated has units of blank

VARS

Line current in phase current are the same in the blank configuration

Why

The three phase connection and which one end of the windings are connected together is called a blank connection

wye

The rotating part of a revolving armature type of alternator is called the blank

Rotor

In a three phase motor the speed of rotation of the magnetic field is called the blank speed

Synchronous

In calculating a parent power or VA in a three phase circuit the phase values of voltage and current or multiplied by blank

Three

And open Delta connection is made using blank single phase transformers

To

True or false To minimize interference telecommunication lines are run as close to phase conductors as possible and as far away from the neutral conductor as possible

False

The higher power output alternators use a revolving blank

Field

The direct current that is an input to the alternators rotor is the blank current

Excitation

If a piece of machinery needs a replacement motor and will be damage if the new motor rotate the wrong way the test equipment needed to test the rotation direction of the new motor is a blank

Faze rotation meter