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Journeyman Electrician Exam
An electromagnet can be switched on and off correct answersAnd advantage of an electromagnet over a permanent magnet is Scatters light uniformly in all directions correct answersAn excellent diffuser surface is one that In a photovoltaic cell correct answersLight is converted into electricity Armature correct answersThe rotating part of a DC motor is known as Fish tape correct answersA device used to pull wires through a conduit is called Approximately zero correct answersIn making a resistance test, remember that the resistance of a short circuit is Parallel correct answersTo increase current capacity, battery cells are connected in 10 correct answersThe hot resistance of an incandescent lamp is approximately how many times it's cold resistance Start measuring at the highest range correct answersThe proper way of measuring and unknown voltage with a multi-tester is to A charge correct answersA capacitor stores what? Paper correct answersWhat has the lowest dielectric strength
Knife correct answersA form of air switch in which the moving element is a hinged blade wedge between stationary contact blades when closed is a what switch The contact resistance between the bare wire in the person at the point of contact correct answersIf a bare live conductor is touched accidentally, the severity of the electric shock is determined primarily by The same as correct answersThe voltage per turn of the primary of a transformer is ________the voltage per turn of the secondary Infinite correct answersAnd open resister when checked with an ohmmeter reads Lesser correct answersThe larger the diameter of a wire, the _____is it's resistance? Above correct answersService heads and goosenecks in service entrance cable shall be what point of attachment of the service drops to the building? Moisture resistant and thermoplastic correct answersType TW conductor is what type? Low permeability correct answersSteel is hard to magnetize because of its Commutator correct answersA repulsion motor is equipped with a increase correct answersWhen the temperature of a copper wire is raised, the resistance will Starting correct answersThe capacitor in a capacitor-start induction-run AC motor is connected in series with what winding? Cover correct answersDefined 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 A battery correct answersAn ohmmeter consists of a meter movement in series with what?
Eddy current loss is reduced correct answersTransformer cores are built up from laminations rather than from solid metal so that what happens? Dial indicator correct answersAn instrument used to check the motor shaft alignment is called what? Power correct answersIn AC circuits, the ratio of KW/kVA represents what factor? Larger plate area and smaller distance between plates correct answersCapacitance increases with? Electricians knife correct answersA tool used by a lineman to remove insulation from a large cable is called? Specific gravity correct answersThe condition of a liquid electrolyte in a battery is measured in terms of its what? Smaller than the smallest resistance in the combination correct answersIn a parallel circuit, the total resistance is? Generator correct answersWhat is A machine used to transform mechanical energy into electrical energy? Insulator correct answersWhat is a material with atoms in which the electrons tend to stay in their orbits? high frequency alternating current in a coil with an iron core correct answersHysteresis losses are caused by? Current correct answersIn magnetic and electric circuit analogy, magnetic flux is the analog of what? Commutator correct answersA device that reverses the magnetic field polarity to keep a DC motor rotating
Length correct answersThe resistance of a wire is directly proportional to the what and inversely proportional to the cross-sectional area? It's physical size correct answersThe energy in a battery cell depends mainly on what? Preevent the connection from loosening under vibration correct answersLocknuts are sometimes used in making electrical connections on studs. In these cases the purpose of the locknut is to what Use a hacksaw and Ream the ends correct answersTo cut rigid conduit you should do this A volt meter correct answersIn the course of normal operation the instrument which will be at least effective in indicating that a generator may overheat because it is overloaded, is Two gang switch correct answersTwo switches in one box under one face plate is called what? A "LB" or "T" or similar fitting correct answersA conduit body is this A single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation correct answersA dwelling unit is A wall, a fence, or housing or case correct answersEnclosed means, surrounded by what which will prevent persons from accidentally contacting energized parts Copper correct answersWhere the conductor material is not specified in the code, the conductors are assumed to be what? Voltage drop correct answersThe voltage lost across a portion of a circuit is called the Current correct answersIn a series circuit this is common Direct correct answersBattery supply what kind of current
Short-circuited correct answersGive a test lamp lights when placed in series with a condenser and a suitable source of DC, it is a good indication that the condenser is AC correct answersTo transmit power economically over considerable distances, it is necessary that the voltage beehive. High voltages are readily obtainable with what kind of currents?
