Florida Journeyman Electrician CB Exam 1

Florida Journeyman Electrician CB Exam 1 An advantage of an electromagnet over a permanent magnet is that... - an electromagnet can be switched. An excellent diffuser surface is one that... - scatters light uniformly in all directions Light is converted into electricity... - in a photovoltaic cell The rotating part in a DC motor is known as... - an armature A device used to pull wires through a conduit is called... - fish tape In making a resistance test, remember that the resistance of a short circuit is... - approximately zero To increase current capacity, battery cells are connected in... - parallel The hot resistance of an incandescent lamp is approximately ______ times its cold resistance. - 10 times The proper way of measuring an unknown voltage with a multi-tester is to... - start measuring at the highest range A capacitor stores... - a charge ______ has the lowest dielectric strength. - paper A form of air switch in which the moving element is a hinged blade wedge between stationary contact blades when closed is a _____ switch. - knife If a bare live conductor is touched accidentally, the severity of the electric shock is determined primarily by... - contact resistance at point of contact The voltage per turn of the primary of a transformer is _____ the voltage per turn of the secondary. - sane as An open resistor when checked with an ohmmeter reads _____. - infinite The larger the diameter of a wire, the _____ is its resistance. - lesser Service heads and goosenecks in service entrance cable shall be _____ point of attachment of the service drops to the building. - above the Type TW conductor is a _____ type. - moisture resistant and thermoplastic Steel is hard to magnetize because of its _____. - low permeability A repulsion motor is equipped with a _____. - communtator When the temperature of a copper wire is raised, the resistance _____. - will increase The capacitor in a capacitor-start induction-run AC motor is connected in series with the _____ winding. - 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. - cover An ohmmeter consists of a meter movement in series with... - a battery Grease is a lubricant that is basically a combination of... - oil 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... - open A three-way switch is equivalent to a _____ switch. - SPDT The main reason that electrical appliances are connected in parallel rather than series is _____. - each appliance independent A step-up transformer increases... - voltage A circuit with a lagging current means that the circuit is... - inductive If a conductor has a resistance of 0.2ohms and the length is doubled, the resistance becomes... - 0.4ohms Insulating materials have the function of... - preventing a short between wires For current to flow, the very basic circuit requirements are... - voltage source and a conductor A device or equipment which is suspended from overhead either by means of a flexible cord carrying current, or otherwise is a... - pendant In a series circuit with unequal resistances... - highest resistance has the highest voltage The kilowatt-hour meter can be classified as a/an _____ instrument. - recording Transformer cores are built up from laminations rather than from solid metal so that... - eddy current loss is reduced