Journeyman Electrician Exam Questions and Answers Already Passed

Journeyman Electrician Exam Questions and Answers Already Passed An electromagnet can be switched on and off And advantage of an electromagnet over a permanent magnet is Scatters light uniformly in all directions An excellent diffuser surface is one that In a photovoltaic cell Light is converted into electricity Armature The rotating part of a DC motor is known as Fish tape A device used to pull wires through a conduit is called Approximately zero In making a resistance test, remember that the resistance of a short circuit is Parallel To increase current capacity, battery cells are connected in 10 The hot resistance of an incandescent lamp is approximately how many times it's cold resistance Start measuring at the highest range The proper way of measuring and unknown voltage with a multi-tester is to A charge A capacitor stores what? Paper What has the lowest dielectric strength Knife 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 The contact resistance between the bare wire in the person at the point of contact If a bare live conductor is touched accidentally, the severity of the electric shock is determined primarily by The same as The voltage per turn of the primary of a transformer is ________the voltage per turn of the secondary Infinite And open resister when checked with an ohmmeter reads Lesser The larger the diameter of a wire, the _____is it's resistance? Above Service heads and goosenecks in service entrance cable shall be what point of attachment of the service drops to the building? Moisture resistant and thermoplastic Type TW conductor is what type? Low permeability Steel is hard to magnetize because of its Commutator A repulsion motor is equipped with a increase When the temperature of a copper wire is raised, the resistance will Starting The capacitor in a capacitor-start induction-run AC motor is connected in series with what winding? Cover 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 A battery An ohmmeter consists of a meter movement in series with what? Oil and soap Greece is a lubricant that is basically a combination of what? Open 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? SPDT A three-way switch is equivalent to what kind of switch? It makes the operation of each appliance independent with each other The main reason that electrical appliances are connected in parallel rather than series is? Voltage A step up transformer increases what? Inductive A circuit with a lagging current means the circuit is what? 0.4 ohms If 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 Insulating materials have the function of Voltage source and a conductor For current to flow the very basic circuit requirements are Pendant A device or equipment which is suspended from overhead either by means of a flexible cord carrying current, or otherwise is a? The highest resistance has the highest voltage In a series circuit with unequal resistances Recording The kilowatt hour meter can be classified as what kind of instrument? Eddy current loss is reduced Transformer cores are built up from laminations rather than from solid metal so that what happens? Dial indicator An instrument used to check the motor shaft alignment is called what? Power In AC circuits, the ratio of KW/kVA represents what factor? Larger plate area and smaller distance between plates Capacitance increases with? Electricians knife A tool used by a lineman to remove insulation from a large cable is called? Specific gravity The condition of a liquid electrolyte in a battery is measured in terms of its what? Smaller than the smallest resistance in the combination In a parallel circuit, the total resistance is? Generator What is A machine used to transform mechanical energy into electrical energy? Insulator What 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 Hysteresis losses are caused by? Current In magnetic and electric circuit analogy, magnetic flux is the analog of what? Commutator A device that reverses the magnetic field polarity to keep a DC motor rotating Length The resistance of a wire is directly proportional to the what and inversely proportional to the cross-sectional area? It's physical size The energy in a battery cell depends mainly on what? Preevent the connection from loosening under vibration Locknuts 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 To cut rigid conduit you should do this A volt meter In 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 Two switches in one box under one face plate is called what? A "LB" or "T" or similar fitting A 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 A dwelling unit is A wall, a fence, or housing or case Enclosed means, surrounded by what which will prevent persons from accidentally contacting energized parts Copper Where the conductor material is not specified in the code, the conductors are assumed to be what? Voltage drop The voltage lost across a portion of a circuit is called the Current In a series circuit this is common Direct Battery supply what kind of current Piezoelectricity Electron flow produced by means of applying pressure to a material is called what? Expansion joints Raceways shall be provided with this to compensate for thermal expansion and contraction One-half cycle An alternation is what? Determines if the circuit is alive, determines polarity of DC circuits, and determines if circuit is AC or DC What is the function of a neon glow tester? Chapter 5 What chapter in the code is mobile homes referred to? Are sure the power is turned off Never approach a victim of an electrical injury until you Real power A wattmeter indicates what? Accessible The connection of a ground clamp to a grounding electrode shall be Capacitive reactance exceeds the inductive reactance in the circuit The current will lead the voltage when this happens Shall Mandatory rules of the code are identified by the use of what word Longevity What is not one of the considerations that must be evaluated in judging equipment? A current transformer To increase the range of an AC Ammeter what is most commonly used? Short-circuited Give 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 To transmit power economically over considerable distances, it is necessary that the voltage beehive. High voltages are readily obtainable with what kind of currents?