And advantage of an electromagnet over a permanent magnet is - ANSWERAn electromagnet can be switched on and off
An excellent diffuser surface is one that - ANSWERScatters light uniformly in all directions
Light is converted into electricity - ANSWERIn a photovoltaic cell
The rotating part...
And advantage of an electromagnet over a permanent magnet is - ANSWERAn electromagnet can be
switched on and off
An excellent diffuser surface is one that - ANSWERScatters light uniformly in all directions
Light is converted into electricity - ANSWERIn a photovoltaic cell
The rotating part of a DC motor is known as - ANSWERArmature
A device used to pull wires through a conduit is called - ANSWERFish tape
In making a resistance test, remember that the resistance of a short circuit is -
ANSWERApproximately zero
To increase current capacity, battery cells are connected in - ANSWERParallel
The hot resistance of an incandescent lamp is approximately how many times it's cold resistance -
ANSWER10
The proper way of measuring and unknown voltage with a multi-tester is to - ANSWERStart
measuring at the highest range
A capacitor stores what? - ANSWERA charge
What has the lowest dielectric strength - ANSWERPaper
A form of air switch in which the moving element is a hinged blade wedge between stationary
contact blades when closed is a what switch - ANSWERKnife
, If a bare live conductor is touched accidentally, the severity of the electric shock is determined
primarily by - ANSWERThe contact resistance between the bare wire in the person at the point of
contact
Steel is hard to magnetize because of its - ANSWERLow permeability
A repulsion motor is equipped with a - ANSWERCommutator
When the temperature of a copper wire is raised, the resistance will - ANSWERincrease
The capacitor in a capacitor-start induction-run AC motor is connected in series with what winding? -
ANSWERStarting
Defined as the shortest distance measured between a point on the top surface of any direct buried
conductor, cable, conduit and a top surface of finish grade - ANSWERCover
An ohmmeter consists of a meter movement in series with what? - ANSWERA battery
Greece is a lubricant that is basically a combination of what? - ANSWEROil and soap
The 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 what? - ANSWEROpen
A three-way switch is equivalent to what kind of switch? - ANSWERSPDT
The main reason that electrical appliances are connected in parallel rather than series is? - ANSWERIt
makes the operation of each appliance independent with each other
The voltage per turn of the primary of a transformer is ________the voltage per turn of the
secondary - ANSWERThe same as
And open resister when checked with an ohmmeter reads - ANSWERInfinite
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