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The resistance to magnetic flux is called
reluctance

What is the MKS unit for magnetic flux
Weber

Hardened steel is difficult to magnetize because
of its low permiability

to measure electrical potential you should use a
Voltmeter

How should a voltmeter be connected in a circuit to measure voltage?
In parallel with the potential points being measured

What is used to measure electrical resistance
ohmmeter and megohmmeter

What property of a material is present in every electrical circuit?
resistance

Resistors are connected to electrical circuits to
Limit current

Resistors connected in series across a voltage source to obtain a lower voltage are called voltage
dividers

opposition to any voltage change in a circuit is caused by
capacitance

What is the basic unit for measuring the capacitance of a capacitor
Farad

When capacitors are connected in parallel the effective capacitance of the circuit is
increased

the opposition to any crrent change in an ac circuit caused by inductance is called
inductive resistance

Unit used to measure inductive resistance
Ohm

The ineraction between the roto and stator in an ac motor that causes the rotor to rotate is caused by the
magneticfeilds

In a Y connected load or source, the line voltage is found by what formual?
El= sqroute 3Ip

the formula for finding line current in a Y connected load or source is
IL=Ip

In a delta connected load what formula
EL=EP

The Cos 0 used in 3 phase power formulas is the
power factor

One way of measuring power in a 3 phase circuit is by the use of
3wattmeters

When measuring the power of a 3 phase circuit at 50 percent power factor using only two wattmeters one wattmeter will read
Zero

Dielectric strength is usually expressed in
volts

few electrons and poor conductor is
insulator

what are insulating materials sometimes called
Dielectrics

by how much dose the heat caused by current flowing through a wire increase?
the square of the increase in current

Ohms law simple terms
The higher the voltage the more current flow through a given resistance

Desirable characteristics of conductor insulation include
flexibility and mechanical strength

A channel that holds and protects cables or wires is a
Raceway

BX cable has the same general characteristics as
flexible conduit

to which transformer winding is voltage supplied?'
Primary

To which transformer winding is the load connected?
Secondary

The volt amperes of the primary winding and the volt amperes of the secondary winding are
equal

The output or capacity of a transformer is measured in
kVa

Transformer losses are classified as copper losses and
core losses

Transformer core eddy current losses are reduced by using a
laminated core

What voltage will appear across the secondary terminals of an auto transformer if the common winding should open
primary

A variable transformer is a continuously adjustable
autotransformer

while working on a current transformer the secondary winding must be
short circuited

electric current is measured in amperes which are
Coulomb per second

According to ohms law voltage is equal to
resistance times current

What happens to total current flow if the voltage of a series circuit is doubled and the resistance stays constant
doubles

What is common to all components of a series circuit
current

if one leg of parallel circuit develops an open the total current will
decrease

What is common to all components of a parallel circuit
voltage

General purpose transformers are usually
dry type

A synthetic liquid used in Transformers is known as
askarel

With a delta delta transformer if one transformer is damaged and removed from service the two remaining transformers can be connected as
open Delta

In what type of 3 phase motor starters are auto transformers used
compensating

The installation of dry type transformers in doors are covered by what rules
NEC