Journeyman Electrical Closed Book Exam 1 Questions and Answers 100% Pass

Journeyman Electrical Closed Book Exam 1 Questions and Answers 100% Pass An advantage of an electromagnent over a permanent magnent is that ____. An electromagnent can be switched on and off. 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 of a DC motor is known as ____. 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 it's cold resistance. Ten. 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 electrical 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 conducted is touched accidentally, the severity of electrical shock is determined primarily by ____. The contact resistance between the bare wire and the person at the point of contact. The voltage per turn of the primary of a transformer is ____ the voltage per turn of the secondary. The same as. An open resistor when checked with an ohmmeter reads ____. Infinite. The larger the diameter of the 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 ____. Commutator. 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. Then 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 (Single Pole Double Throw) The main reason that electrical appliances are connected in parallel rather than series is ____. It makes the operation of each appliance independent with each other. A step-up transformer increases ____. Voltage. A circuit with a lagging current means the circuit is ____. Inductive. If a conductor has a r distance of 0.2 Ohms and the length is doubled, the resistance becomes ____. 0.4 Ohms. Insulating materials have the function of ____. Preventing a short circuit between conducting wires. For current to flow the very basic circuit requirements are ____. Voltage source and a conductor. A device of equipment which is suspended overhead either by means of a flexible cord carrying current, or otherwise is a ____. Pendant. In a series circuit with unequal resistances ____. The 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. An instrument used to check the motor shaft alignment is called a ____. Dial indicator. In AC currents, the ratio of kw/kva represents the ____ factor. Power. Capacitance increases with ____. Larger plate area and smaller distance between plates. A tool used by a lineman to remove insulation from large cables is called ____. Electrician's knife. The condition of a liquid electrolyte in a better is measured in terms of its ____. Specific gravity. In a parallel circuit, the total resistance is ____. Smaller than the smallest resistance in the combination. A ____ is a machine used to transform mechanical energy into electrical energy. Generator. An ____ is a material with atoms in which the electrons tend to stay in their orbits. Insulator. Hysteresis losses ____. Are caused by high frequency alternating current in a coil with an iron core. In magnetic and electric circuit analogy, magnetic flux is the analog of ____. Current. A device that rev roses the magnetic field polarity to keep a DC motor rotating is a ____. Commutator The resistance of a wire is directly proportional to the ____ and inversely proportional to the cross-sectional area. Length. The energy in a battery cell depends mainly on ____. Its physical size.