Step Test KCTCS Electrical Program
flux density
In the English system of measure, magnetic strength is measured in terms of _____.
magnetomotive force
In the English system, the total force producing a magnetic field is the _____.
true
The amount of voltage induced into a conductor depends on the turns of wire, the strength of the magnetic field, and the speed of cutting action.
declination
The angular difference between true north and magnetic north is known as the angle of _____.
Saturation
When a magnetic material's molecules are all lined up, and increases in current flow no longer cause increases in magnetic field strength, the material has reached
saturation
When a magnetic material's molecules are all lined up, and increases in current flow no longer cause increases in magnetic field strength, the material has reached _____.
one
When calculating the power of a pure resistive load, the voltage and current are in phase with each other and the power factor is _____.
Thrust
When using the left-hand generator rule, the thumb points to the direction of _____.
False
The north pole of a compass needle points in the direction of the south geographic pole.
permanent magnets
What type of magnets do not require any power or force to maintain their field?
electromagnetic induction
When a conductor cuts magnetic lines of force, a voltage is induced into the conductor. This principle is called _____.
eddy current; hysteresis
Losses in the core of iron core inductors include _____ and _____ losses.
electromagnet
What type of magnet depends on flowing current to produce a magnetic field?
Line Voltage
In a three-phase connection, what is the voltage measured between the lines?
South
The north magnetic pole of a compass needle is attracted to the _____ magnetic pole of the earth.
south
The north magnetic pole of a compass needle is attracted to the _____ magnetic pole of the earth.
three
In calculating apparent power (VA) in a three-phase circuit, the phase values of voltage and current are multiplied by _____.
Flux Density
In the English system of measure, magnetic strength is measured in terms of _____.
henry (H)
What is the unit of measurement for inductance?
an oscilloscope
What meter measures an amount of voltage during a period of time and produces a two-dimensional image?
an ohmmeter
What meter must NEVER be connected to a circuit when the circuit power is turned on?
electron
What part of an atom has a negative charge?
Lenz's Law
When a closed loop of wire cuts through magnetic flux lines, a current is induced into the loop. The current in the loop sets up a magnetic field that is in opposition to the original magnetic flux. This is essentially _____.
semiconductor
Selenium is a(n) _____.
universal
The _____ motor can operate on either AC or DC voltage.
Connects the circuit to the equipment structure/earth to rout unintended electricity (such as from lightening or a short) safety into the earth.
What does a ground wire do?
prevents an action until some other action has been performed
What does interlocking do?
repulsion
What force is demonstrated in objects with like charges?
one family dwelling load calculation methods
a load calculation on an individual unit in a multifamily dwelling must be calculated in accordance with one of the
50
a luminary that weighs more than ______ lbs shall not be supported independently of the outlet box, unless the outlet box is listed and marked to handle the load
three or more
a multifamily dwelling is a building containing _____ dwelling units
direct
a separately derived system is an electrical source other than a service, having ______ connections to circuit conductors of any other electrical source other than established
service lateral
defined as the underground conductors between the utility electric supply system and the service point
grounded
for the purpose of this load calculation, the terms neutral and _____ are synonymous
dedicated clock outlet
is permitted on a small appliance branch circuit
utilization
the term appliance designates _____ equipment installed as a unit to perform specific functions
Five
Exponential curves are always divided into _____ time constants.
closed
A complete circuit is often referred to as a(n) _____ circuit.
air filter
A precipitator is a type of _____.
9 Volts
A square wave voltage varies between 0 V and 12 V. The positive pulses are 75 μs wide and there is a 25 μs gap between them. What is the DC average of the waveform?
synchronous condenser
A synchronous motor operated with no load and used for power factor correction is sometimes called a _____.
series
Conductive compensation is accomplished by connecting the compensating winding in _____ with the armature.
false
During normal operation of a typical 120-volt appliance circuit, current flows through the hot, grounding, and neutral conductors.
63.2
During the period of time known as the first time constant of an exponential curve, the current will rise to about _____ percent of its full value.
True
Earth contains magnetic poles.
Ghost
High impedance voltmeters can indicate some amount of voltage caused by the capacitance of the ground and induced voltage produced by surrounding magnetic fields. These are generally referred to as ____________________ voltages.
false
High voltage surges are harmless and cannot damage electronic components connected to the power line.
AC only
In a universal motor, inductive compensation can be used when the motor is connected to _____.
square root of three
In a wye-connected system, the line voltage is higher than the phase voltage by a factor of _____.
electron
Magnetism can be explained in terms of _____ spin patterns.
d'Arsonval
Moving coil meter is another name for the _____ meter movement.
synchronous
Clock timers use a small AC ____________________ motor similar to the motor found in a wall clock to provide the time measurement for the timer.
electrons
Electrical current is the flow of _____.
75 %
In a balanced three-phase system, the conductors need be only about _____ the size of conductors for a single-phase, two-wire system of the same kilovolt-ampere (kVA) rating.
multiplying apparent power by the power factor
In a three-phase circuit, the true power (watts) is found by _____.
True
Lightning is the result of static charges built up in clouds that contain a large amount of moisture.
True
Lightning rods provide an easy path to ground for current.
multirange
Most voltmeters are _____ voltmeters, meaning they are designed to use one meter movement to measure several ranges.
full load
Motor starting current is referred to as ____________________ current.
coil
Timer relays are similar to other control relays in that they use a(n) ____________________ to control the operation of some number of contacts.
solate, or disconnect, the device being measured from the circuit and Discharge any capacitors in the circuit. and turn off power
To insure a safe and accurate measurement, what steps must be taken prior to measuring resistance?
Left hand rule
To locate the north pole of an electromagnet, use the
resistance
What causes a wire to become warm when current flows through it?
alternating
What type of current reverses its direction of flow at regular intervals?
sequence control
____________________ forces motors to start or stop in a predetermined order.
white or gray
a cable assembly's ___ conductor can be used as a switch loop
grounded
concrete, brick, or tile walls are recognized as
one family dwellings
general receptacle installation provisions for multifamily dwellings are almost identical to those for
size of service and feeders
load calculations must be performed in order to determine the
strains
multi-conductor cords or cable used to support a box must be protected in a approved manner so that the conductors are not subjected to
listed bushings or grommets
non-metallic sheathed cable passing through holes in metal must be protected by ____ covering metal edges
8
nonmetallic sheathed cable not fastened to the box must be secured within ____ inches of the box
300
voltage between overhead conductors does not exceed ____ volts
with a 20,000 ohm resistor placed across the capacitor terminals.
A capacitor can be safely discharged?
100 volts
A delta connected set of windings has a phase voltage of 100 V. What is the line voltage?
left-hand generator rule
A way of determining the relationships of the motion of the conductor, the magnetic field direction, and the direction of the induced current is by using the _____.
sequence
Cam times are also known as ____________________ timers.
is
If a permanent magnet is cut into pieces, each piece _____ a separate magnet.
lenz's Law
An induced voltage opposes the motion that causes it according to _____.
lenz's law
An induced voltage opposes the motion that causes it according to _____.
7-8
An insulator is a material containing _____ valence electrons.
4
Approximately how many horsepower is an electrical device listed as 3,000 watts?
1
At least how many people should be trained in CPR on the service trucks?
True
Copy machines operate on the principle of static electricity.
false
Current always flows from positive to negative.
true
Diodes are used to suppress the voltage spikes produced by coils that operate on direct current.
unidirectional
Direct current is described as _____.
5
Exponential curves are always divided into _____ time constants.
insulators
Electrostatic charges occur on _____.
True
Normally open auxiliary contacts that control the starting sequence are often called permissive contacts because they permit action to take place.
Higher
Permanent magnet motors have _____ efficiency than conventional field-wound motors.
integral
Push button type manual starters are ____________________, not fractional, horsepower starters.
dual element
Fuses which are intended to provide both short circuit protection and overload protection are called ____________________ time delay fuses.
kitchen countertop surfaces
GFCI protection is required for receptacles installed to serve
changing any two motor T leads
How can the direction of rotation of any three phase motors be reversed?
true
Hysteresis loss is often referred to as molecular friction.
WYE
Line current and phase current are the same in the _____ configuration.
delta
Line voltage and phase voltage are the same in the _____ connection.
20
Line voltage devices may have contacts rated for 15 to ____________________ amperes.
magnetite
Lodestone is a name for a naturally occurring magnetic material that is also called _____.
servicing utility
a service point can be described as the point of demarcation between where the _____ ends and the premises wiring begins
twice
a single phase feeder conductor will have a total resistance _____ that of one conductor
wiring systems
ducts used to transport dust, loose stock, or flammable vapors shall not contain _____ of any type
fractional
Motors of 1 horsepower or less are considered ____________________ horsepower.
magnetic and thermal
Overload relays are divided into two separate sections. What are the two sections?
have secure support provided by the support wires and associated fittings
raceways installed within drop ceilings must
same
Relays and contactors operate on the ____________________ principle.
normally open, normally closed, normally closed held open, normally open held closed
the four basic switch symbols.
True
The amount of voltage induced into a conductor depends on the turns of wire, the strength of the magnetic field, and the speed of cutting action.
WYE
The three-phase connection in which one end of each of the windings are connected together is called a(n) _____ connection.
outer
The valence shell of an atom is the _____ shell.
Floating
When one side of the control transformer is not grounded, it is generally referred to as a(n) ____________________ system.
contactor
Inching control requires the use of a separate ____________________ because the power supplied to the motor must be separate from full line voltage.
True
Matter has mass and occupies space.
watts
The amount of electrical power being used in a circuit is measured in ____.
residual magnetism
The amount of magnetism left in a material after the magnetizing force has stopped is called _____.
volt
The amount of potential necessary to cause one coulomb to produce one joule of work is a(n) _____.
150 %
The horsepower rating of three-phase motors and the kilovolt-ampere rating of three-phase transformers are about _____ greater than for single-phase motors or transformers with a similar frame size.
one
The magnetic quantity Weber (Wb) is equal to 100,000,000 lines of flux. If a conductor cuts through one Weber per second, then a voltage of _____ volt(s) is induced into the conductor.
reluctance
The measure of a material's resistance to magnetism is known as _____.
clamp-on
The meter is only connected to one of the lines supplying power when using a(n) _____ ammeter.
grounded
The neutral conductor is also referred to as the _____ conductor.
Ayrton shunt
The resistors are connected in parallel with the meter on some ranges and in series for other ranges when a(n) _____ is used.
armature
The rotating part of a generator is called the _____.
high
The series ohmmeter is used to measure_____ values of resistance.
Servo-Disc
The servomotor featuring a fiberglass and copper rotor is the _____ motor.
pulse-width
The speed of the disc servomotor can be varied by changing the amount of voltage supplied to the armature. The voltage is generally varied using _____.
armature resistance
The speed regulation of a DC motor is proportional to the _____.
bars, rings
The squirrel-cage rotor is constructed of _____ and end _____ embedded in steel laminations.
Ohm's
The statement, "In a DC circuit, the current is directly proportional to voltage and inversely proportional to resistance," is know as _____ law.
on delay and off delay
What are the two basic types of timers?
solder melting type and bimetal strip
What are the two types of thermal overloads?
What is a reason for sealing load contacts inside a vacuum chamber?
What is a reason for sealing load contacts inside a vacuum chamber?
torque motor
What is a special type of motor designed to operate with the rotor stalled without damage to the motor?
metal oxide varistor
What is one device used for spike suppression in either direct or alternating current circuits?
d'Arsonval movement
What is one of the most common analog meter movements?
to maintain a path of current when the button is released
What is the function of the contact referred to as a holding, sealing, or maintaining contact?
8
What is the maximum number of valence electrons in an atom?
magnetism
What is the most common method of producing electricity?
wood or fiberglass
What is the safest type of ladder to use if one is necessary?
an atom
What is the smallest part of an element that still retains the properties of that element?
wattmeter
What meter measures true power in a circuit?
0.75 inches
half round and flat top raceways not over 4 inches in width must be covered by ______ or more concrete or wood
multiple services
if the load requirements of a single phase installation are greater than the servicing agency normally supplies through one service ______ are permitted
compliance ratings
when calculating appliance load in a one-family dwelling
single row that provides the maximum distance
where multiple rows of raceways enter a box, calculate each row separately and use the
controlled by automatic means only
working space illuminations shall not be
adequate mechanical strength
conductors must have ______ and sufficient capacity to carry the current for the load as calculated
8
conductors must have a vertical clearance of at least _____ ft above the roof surface
buses
panel-boards include over-current devices as well as
not required
ready accessibility to wiring in luminary is
wye-connection
the neutral point is the common point on a ______ in a polyphase system
the calculated load
the service disconnecting mean for a standard load calculation for a single unit of a multifamily dwelling unit must have a rating of at least
non coincident
the smaller of two or more ________ loads can be omitted, as long as they are never energized simultaneously
five
type AC cable must have a bending radius at least _____ times the diameter of the cable
be indirectly buried
type USE cable used for service laterals can
plaster(mud)
volume in boxes can be increased by using _____ rings, domed covers, extension rings, or similar items
main bonding jumper
when metal parts are required to be electrically connected an _____ is installed thereby guaranteeing electrical conductivity
17.32 amps
A delta-connected set of windings has a phase current of 10 A. What is the line current?
40 A
A delta-connected three-phase alternator is driving a wye-connected resistive load. The alternator output voltage is 480 V. The load resistors are 12 Ω each. What is the phase current in the alternator?
Motor
A device that converts electrical energy into mechanical energy is called a(n) _____.
10
A drip loop's lowest point has a minimum vertical clearance of _____ inches
True
A feed-through GFCI receptacle can provide GFCI protection for regular receptacles installed "downstream" on the same branch circuit.
False
A thundercloud contains only positive electric charges.
10 amps
An electrical circuit has a voltage of 50 V and a resistance of 5 Ω. What is the value of current?
True
Instantaneous contacts change their positions immediately when the coil is energized and change back to their normal positions immediately when the coil is de-energized.
flux
Magnetic lines of force are referred to as _____.
True
Manual control may be accomplished by simply connecting a switch in series with the motor.
True
Manual push button line voltage starters are manufactured with two or three line voltage contacts.
ampere
One coulomb per second is equal to one _____.
True
Pneumatic timers are adjustable over a wide range of time periods.
pot
Solder melting type overloads are often called solder ____________________ overloads.
1200
The Holtz motor operates at _____ RPM.
Eddy
The continuous change of both amplitude and polarity of the magnetic field causes currents to be induced into the metal core material; these currents are called ____________________ currents.
True
The current flow through the MOV is called leakage current and is so small that it does not affect the operation of the circuit.
DC
The d'Arsonval meter movement is operated by applying _____ current to the coil
True
The grounding prong of a plug should never be cut off or bypassed.
ampere-turns
The strength of an electromagnet is primarily proportional to its
iron, nickel, and cobalt
The three substances that form natural magnets are
iron, nickel, and cobalt
The three substances that form natural magnets are _____.
R-L
The time required for current in an inductor to reach its full Ohm's law value is called the _____ time constant.
ohm
The unit of resistance to current flow is the _____.
Coulomb's Law
What law states that the force of electrostatic attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them?
voltmeter
What meter is designed to be connected directly across the power source?
an ohmmeter
What meter measures resistance?
open
When a component is used to perform the function of start it is generally normally ____________________
approved power strip
a ______ or an accessible plug and receptacles can serve as the disconnecting means
125 volt, single phase, 15 or 20 amp rated
a _______ receptacle outlet shall be installed at an accessible location for the servicing of heating, air conditioning and refrigeration equipment
at least one wall switch controlled lighting outlet
a detached garage with electric power must have
considered a coincident load
a heat pump with supplementary heat is
a single conductor
a multi conductor cable, optical fiber cable, or flexible cords of two or more conductors is treated as
black, red, blue
a widely accepted practice is to identify 3 phase underground (Hot) conductors as _____ in 208/120 volt, 4-wire, wye connected systems
reamed
all ends of IMC or RMC must be
fitting
an _____ is a accessory such as a locknut or bushing whose function is mechanical
connecting appliances
an appliance branch circuit supplies energy to one or more outlets for the purpose of
functioning to de-engergize
an arc-fault circuit interrupter (AFCI) provides protection from the effects of arc faults by _____ the circuit when an fault is detected
require one lighting outlet
attic spaces used for storage or containing equipment that may require servicing
How are mechanical interlocks shown in a schematic diagram?
by dashed lines extending from each coil
NFPA
formal interpretations of the NEC are governed by
20
grounding conductors are required for circuits over _____amps
conducting
grounding electrodes is an _____ object that establishes a direct connection to earth
150
if the over protection rating for an appliance is not marked and the appliance is rated over 13.3 amps , the over current protection device shall not exceed _____ % of the rated current
sliding panels
in exterior walls are not counted as wall sapce
four
or fewer luminary wires and equipment grounding conductor can be omitted from box fill calculations where they enter a box
can be supported by trees
outdoor luminaries and associated equipment
70 lbs
outlet boxes or outlet box systems used as the sole support of a ceiling suspended fan that weigh more than
Tamper-resistant
receptacles are identified by the letters TR
water shall not enter the service raceway or equipment
service entrance and overhead service conductors shall be arranged so that
22 inches
what is the angle pull for a raceway in the horizontal dimension where the trade size of the larges raceway is 3 and the sum of the other raceways in the same row
individually
where a box contains both straight and angle pulls, or straight pulls and splices, calculate each type of pull ____ to find the dimension
box fill
wire connectors, pigtails, lock nuts, bushings, raceway connectors, grounding screws, and equipment bonding jumpers are not factors when calculating
troughs(sheet metal or non metallic)
wire ways are _____ with hinged or removable covers to a house and protect electric wires and cables
messenger
wire, together with a strain insulators, is used to support conductors in all spans exceeding 40 ft
attract; repel
A basic law of magnetism states that unlike poles _____ and like poles _____.
480 volts
A delta connected set of windings has a phase voltage of 480 V. What is the line voltage?
senses magnetic field strength sent to the motor to heat from current to open the contacts
How do magnetic type overload relays operate?
true
Overload relays are designed to open the circuit when the current becomes 115 percent to 125 percent of the motor full load current.
parallel
Shunt generators contain only a shunt field winding connected in _____ with the armature.
flexible metal tape armor
Type AC cable shall have an
contacts that latch and prevents power to be maintained on the coils
What are coil clearing contacts?
from negative to positive
Within a lightning bolt, current flows _____.
in a raceway
cable installed under a building must be _____ unless the wiring methods is type MC or MI cable that is identified for direct burial
guard strips or running boards
cables not installed on the face do not require
factory assembled and listed as a unit
circuit breakers and fuses can be connected in parallel provided they are
circular mils
conductor sizes are expressed in American wire gauge or in
galvanic action
contact of dissimilar metals should be avoided wherever possible to lesson the potential for
How is mechanical interlocking accomplished?
contactors operating a mechanical lever that prevents the other contactor from closing while one is energized
wall space
determines the minimum number of receptacles in a given dwelling
do not require GFCI protection
kitchen receptacles not servicing countertops such as a refrigerator ______ unless they are installed within 6ft of the sink
outer liquid tight, non-metallic, sunlight-resistant jacket
liquid tight flexible conduit (LFMC) is a raceway of circular cross section having an _____over an inner flexible metal core
may adopt the NEC as written or amend the code with more or less stringent regulations
local ordinances
one receptacle outlet
one family dwellings require at least _____ installed at the front and back of the dwelling
guarded
panel boards having doors or covers are considered
the listed product complies with UL standards
the UL logo indicates that
floor area
the ______ for each floor shall be computed using the outside dimensions
higher the voltage drop
the higher the resistance through a conductor the
0.5
the minimum approved trade size for EMT is _____ inches
Load
Contactors are equipped with contacts intended to connect high current loads to the power line; these large contacts are called ____________________ contacts.
10 foot
overhead service conductors, accessible only yo pedestrian traffic . must have a minimum of _______ clearance
compound
A generator containing both series and shunt fields is called a _____ generator.
shunt
The DC motor, known as a "constant speed motor," is the _____ motor.
useful
The static charge sometimes used during spray painting is an example of a(n) _____ static charge.
less than
The velocity of AC through a conductor is _____ the speed of light.
120 degrees
Three-phase voltages are _____ out of phase with each other.
neutron
What part of an atom has no charge?
giga(G)
What standard prefix in engineering notation indicates multiplication by 1,000,000,000?
direct
What type of current flows in only one direction?
false
With automatic control, an operator has to initiate certain actions.
AHJ
a _____ is the organization, office, or individual responsible for enforcing the requirements of a code
red conductor
in a cable can be used as a underground conductor when supplying power to a switch
60
An electric motor is running on 120 V. The current is measured to be 2 A. How many ohms of resistance is the motor?
6
at least ______ inches of free conductor shall be left at each outlet , junctions, and switch point
one
at least _______ wall switch-controlled lighting outlet shall be installed in every habitable room or dwelling
size and number of raceways
box calculations for 4 awg and larger conductors are performed based on the
20
branch circuits in kitchens should be _____ amp circuits
True
An electroscope can be used to determine the polarity of an electrostatic charge.
for electrical conductors, providing access to predetermined cells of a cellular floor
A header is a transverse raceway
high
A voltmeter has a very _____ resistance connected in series with the meter movement.
shading
All solenoids that operate on alternating current must have a(n) ____________________ coil.
bidirectional
Alternating current is described as _____.
By pushing the stop button with above average pressure to allow the contacts and heat devices to coil then the start button can be pushed to start the motor again.
How is a manual push button starter reset?
demagnetized
If an object is placed in the field of an strong electromagnet connected to an AC line, the object will be _____.
contacts
If any one of the overloads should trip, a mechanical mechanism opens the load ____________________ and disconnects the motor from the line.
False
In schematics, electrical components are always shown in their energized or on state.
never falls to zero
In three-phase power systems, the delivered power _____.
electrons
Insulators are the only materials that can hold _____ stationary.
False
Integral horsepower manual starters with low voltage release will restart automatically after a power failure without being reset.
True
Jogging can be accomplished using a double-acting push button.
dashpot
Magnetic overload relays can be divided into two major types: electronic and
False
Magnetic type overload relays are sensitive to ambient temperature.
False
Manual control is characterized by the use of push buttons, limit switches, pressure switches, and other sensing devices to control the operation of a magnetic contractor or starter.
True
Many industries prefer to ground the control system and it is a very common practice.
bearings
Some common causes of motor overloads are bad ____________________ in either the motor or the load the motor operates.
True
Some motors can draw up to 600 percent of rated full load current during starting.
2500
The Greeks were the first to discover electricity about _____ years ago.
True
The National Electrical Code® gives minimum safety standards for electrical work and is not intended to be a "How-To" manual.
3600
The Warren motor operates at _____ RPM.
run
The _____ winding is made of a few turns of large wire and is located at the bottom of the stator core of a split-phase motor.
start
The _____ winding is made of many turns of small wire and is located at the top of the stator core of a split-phase motor.
Control Relay
The addition of a(n) ____________________ to the jog circuit eliminates the problem of the holding contacts making connection before the normally closed section of the jog push button makes connection.
true
The conductor size, fuse or circuit breaker size, and overload size are generally determined using the National Electrical Code® and/or local codes.
high
The consequent-pole motor is used where _____ running torque must be maintained at different speeds.
Brushless DC
The motor that does not contain a wound armature, commutator, or brushes is the _____ motor
neutrons and protons
The nucleus of an atom contains _____.
field excitation current
The output voltage of a generator is usually controlled by the amount of _____.
high; low
The wound-rotor induction motor is popular in industry because it has _____ starting torque and _____ starting current.
false
Thermal overload relays trip faster when located in a cool area than in a warm area.
left
To locate the north pole of an electromagnet, use the _____-hand rule.
Wire numbers
To simplify the task of converting the schematic diagram into a wiring diagram, ____________________ are added to the schematic diagram.
single phase motors that operate on 240 volts
What are manual push button line voltage starters with two contact models intended to control?
electron, neutron, and proton
What are the three principle parts of an atom?
mechanical connection
What does it mean when components are shown connected by a dashed line in a schematic diagram?
the equipment can restart when the power is restored
What is the disadvantage of the automatic restart feature on equipment such as lathes, milling machines, saws, drill presses, or any other type machine that may have an operator present?
Henry (H)
What is the unit of measurement for inductance?
short
What type of circuit generally occurs when the conductors leading from and back to the power source become connected?
two of the three phase lines would be shorted
What would happen if both contactors were energized at the same time?
parallel
When a component is used to perform the function of start it is generally connected in ____________________ with the existing START button.
closed
When a component is used to perform the function of stop in a control circuit, it will generally be a normally ____________________ component.
Series
When a component is used to perform the function of stop in a control circuit, it will generally be connected in ____________________ with the motor starter coil.
Grounded
When one side of the secondary winding of a control transformer is grounded, the control system is referred to as a(n) ____________________ system.
shunt
When the field winding of a DC motor is connected in parallel with the armature, the motor is called a _____ motor.
current
When using the left-hand generator rule, the center finger points to the direction of _____.
Schematic
____________________ diagrams show electrical components in their electrical sequence without regard for physical location.
not more than the rating
a single receptacle installed on a branch circuit with no other device or outlet shall have amp rating ______ of that circuit
specific distance requirements
although not stipulated in the NEC, some local jurisdictions have adopted ______ for service conductors
Phase voltage
In a three-phase connection, what is the voltage measured across a single winding?
Fleming
The direction of induced current can be determined by using _____'s left-hand generator rule.
analog
A test meter that uses a scale and pointer to indicate values is a(n) _____ meter.
6.93 A
A wye-connected alternator that has phase voltages of 277 V is feeding two loads. The first load is wye-connected inductors that have 40 Ω of XL. The second load is delta-connected capacitors that have XC of 60 Ω. How much is the alternator phase current?
VARS
If a three-phase load is a pure reactive load, then the power calculated has units of
reverse the polarity of the induced voltage
If a voltage is being induced into a conductor by electromagnetic induction, reversing the direction of motion of the conductor will _____.
True
If current is flowing in a circuit containing an inductor and the power switch is opened, the magnetic field surrounding the inductor collapses and induces voltage into the inductor, resulting in a voltage spike.
line current
The alternator must supply the _____ for each of the loads.
