An advantage of an electromagnent over a permanent magnent is that ____. - ANSWER An electromagnent can be switched on and off.
An excellent diffuser surface is one that ____. - ANSWER Scatters light uniformly in all directions.
Light is converted into electricity ____. - ANSWER In a photovol...
An advantage of an electromagnent over a permanent magnent is that ____. - ANSWER An
electromagnent can be switched on and off.
An excellent diffuser surface is one that ____. - ANSWER Scatters light uniformly in all directions.
Light is converted into electricity ____. - ANSWER In a photovoltaic cell.
The rotating part of a DC motor is known as ____. - ANSWER Armature.
A device used to pull wires through a conduit is called ____. - ANSWER Fish tape.
In making a resistance test, remember that the resistance of a short circuit is ____. - ANSWER
Approximately zero.
To increase current capacity, battery cells are connected in ____. - ANSWER Parallel.
The hot resistance of an incandescent lamp is approximately ____ times it's cold resistance. - ANSWER
Ten.
The voltage per turn of the primary of a transformer is ____ the voltage per turn of the secondary. -
ANSWER The same as.
An open resistor when checked with an ohmmeter reads ____. - ANSWER Infinite.
The larger the diameter of the wire, the ____ is its resistance. - ANSWER Lesser.
, Service heads and goosenecks in service entrance cable shall be ____ point of attachment of the service
drops to the building. - ANSWER Above the.
Type TW conductor is a ____ type. - ANSWER Moisture resistant and thermoplastic.
Steel is hard to magnetize because of its ____. - ANSWER Low permeability.
A repulsion motor is equipped with a ____. - ANSWER Commutator.
When the temperature of a copper wire is raised, the resistance ____. - ANSWER Will increase.
The capacitor in a capacitor-start induction-run AC motor is connected in series with the ____ winding. -
ANSWER Starting.
The ____ is defined as the shortest distance measured between a point on the top surface of any direct
buried conductor, cable, conduit and the top surface of finish grade. - ANSWER Cover.
An ohmmeter consists of a meter movement In series with ____. - ANSWER A battery.
Grease is a lubricant that is basically a combination of ____. - ANSWER Oil and soap.
Then continuity of a coil of winding may be determined by measuring the resistance of the coil. If the
resistance measured is infinite, the coil winding is ____. - ANSWER Open.
A three-way switch is equivalent to a ____ switch. - ANSWER SPDT (Single Pole Double Throw)
The main reason that electrical appliances are connected in parallel rather than series is ____. - ANSWER
It makes the operation of each appliance independent with each other.
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