unit26

Line voltage and phase voltage are the same in the _____ connection.

delta

When resistors of Load 1 are connected in a delta, the line current is the same as the phase current.

false

The alternator must supply the _____ for each of the loads.

line current

What does IL(Load) represent?

line current of the load

In three-phase power systems, the delivered power _____.

never falls to zero

What does EP(Load) represent?

phase voltage of the load

In a wye-connected system, the line voltage is higher than the phase voltage by a factor of _____.

square root of three

In calculating apparent power (VA) in a three-phase circuit, the phase values of voltage and current are multiplied by _____.

three

IL(Load 1) represents the line current to Load 1 (resistive).

true

If Load 3 is pure capacitive, the current and voltage are 90 degrees out of phase with each other and the power factor is zero.

true

When Load 2 is made up of inductors, the reactive power can be calculated using the line values of voltage and current supplied to the load.

true

If a three-phase load is a pure reactive load, then the power calculated has units of _____.

vars

Line current and phase current are the same in the _____ configuration.

wye

The three-phase connection in which one end of each of the windings are connected together is called a(n) _____ connection.

wye