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Journeyman Electrician Exam 2024
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An electromagnet can be switched on and off - ANSWERAnd advantage of an electromagnet over a permanent magnet is Scatters light uniformly in all directions - ANSWERAn excellent diffuser surface is one that In a photovoltaic cell - ANSWERLight is converted into electricity Armature - ANSWERThe rotating part of a DC motor is known as Fish tape - ANSWERA device used to pull wires through a conduit is called Approximately zero - ANSWERIn making a resistance test, remember that the resistance of a short circuit is Parallel - ANSWERTo increase current capacity, battery cells are connected in 10 - ANSWERThe hot resistance of an incandescent lamp is approximately how many times it's cold resistance Start measuring at the highest range - ANSWERThe proper way of measuring and unknown voltage with a multi-tester is to A charge - ANSWERA capacitor stores what? Paper - ANSWERWhat has the lowest dielectric strength Moisture resistant and thermoplastic - ANSWERType TW conductor is what type?
Low permeability - ANSWERSteel is hard to magnetize because of its Commutator - ANSWERA repulsion motor is equipped with a increase - ANSWERWhen the temperature of a copper wire is raised, the resistance will Starting - ANSWERThe capacitor in a capacitor-start induction-run AC motor is connected in series with what winding? Cover - ANSWERDefined 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 - ANSWERAn ohmmeter consists of a meter movement in series with what? Oil and soap - ANSWERGreece is a lubricant that is basically a combination of what? Open - ANSWERThe 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? SPDT - ANSWERA three-way switch is equivalent to what kind of switch? It makes the operation of each appliance independent with each other - ANSWERThe main reason that electrical appliances are connected in parallel rather than series is? Voltage - ANSWERA step up transformer increases what? Inductive - ANSWERA circuit with a lagging current means the circuit is what? 0.4 ohms - ANSWERIf a conductor has a resistance of 0.2 ohms and the link is doubled, the resistance becomes what? Preventing a short circuit between conducting wires - ANSWERInsulating materials have the function of
Generator - ANSWERWhat is A machine used to transform mechanical energy into electrical energy? Insulator - ANSWERWhat 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 - ANSWERHysteresis losses are caused by? Current - ANSWERIn magnetic and electric circuit analogy, magnetic flux is the analog of what? Commutator - ANSWERA device that reverses the magnetic field polarity to keep a DC motor rotating Length - ANSWERThe resistance of a wire is directly proportional to the what and inversely proportional to the cross-sectional area? It's physical size - ANSWERThe energy in a battery cell depends mainly on what? Preevent the connection from loosening under vibration - ANSWERLocknuts 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 - ANSWERTo cut rigid conduit you should do this Eddy current loss is reduced - ANSWERTransformer cores are built up from laminations rather than from solid metal so that what happens? Dial indicator - ANSWERAn instrument used to check the motor shaft alignment is called what? Power - ANSWERIn AC circuits, the ratio of KW/kVA represents what factor? Larger plate area and smaller distance between plates - ANSWERCapacitance increases with? Electricians knife - ANSWERA tool used by a lineman to remove insulation from a large cable is called?
A volt meter - ANSWERIn 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 - ANSWERTwo switches in one box under one face plate is called what? A "LB" or "T" or similar fitting - ANSWERA 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 - ANSWERA dwelling unit is A wall, a fence, or housing or case - ANSWEREnclosed means, surrounded by what which will prevent persons from accidentally contacting energized parts Copper - ANSWERWhere the conductor material is not specified in the code, the conductors are assumed to be what? Voltage drop - ANSWERThe voltage lost across a portion of a circuit is called the Current - ANSWERIn a series circuit this is common Direct - ANSWERBattery supply what kind of current Piezoelectricity - ANSWERElectron flow produced by means of applying pressure to a material is called what? Expansion joints - ANSWERRaceways shall be provided with this to compensate for thermal expansion and contraction One-half cycle - ANSWERAn alternation is what? Determines if the circuit is alive, determines polarity of DC circuits, and determines if circuit is AC or DC - ANSWERWhat is the function of a neon glow tester?
