4A Unit 8 Questions and Answers 100% Pass

4A Unit 8 Questions and Answers 100% Pass (4-083-3.2) An electrical distribution system is composed of service, feeders and: Select one: a. Trunk circuits b. Branch circuits c. Primary circuits d. Secondary circuits b. Branch circuits (4-082-2.6) A transformer has a primary voltage of 500 volts and 20 turns on the primary winding. If the secondary winding has 5 turns, the voltage of the secondary is: Select one: a. 4 volts b. 100 volts c. 2500 volts d. 125 volts d. 125 volts (4-078-2.1) A closed electrical circuit will: Select one: a. Close-off the flow of current b. Be series only c. Be parallel only d. Allow current to flow d. Allow current to flow (4-080-2.1) The black demand pointer of a kilowatt hour meter: Select one: a. Moves the red pointer b. Reads the current demand c. Indicates the maximum voltage being drawn d. Must be manually reset d. Must be manually reset (4-081-1.5) The three main types of DC generators: Select one: a. Are self-excited b. Are excited by load current c. Are all separately excited d. Develop constant voltage regardless of load a. Are self-excited (4-081-1.11) A shunt type DC generator produces _____ voltage: Select one: a. Alternating. b. Very low. c. Nearly constant. d. Very high. c. Nearly constant. (4-080-2.5) A kilowatt-hour meter has a small motor which: Select one: a. Moves the meter demand pointer b. Has a speed proportional to power consumption c. Slows down as power consumption increases d. Turns at a constant speed b. Has a speed proportional to power consumption (4-078-2.5) A triple pole single throw switch is one that: Select one: a. Opens and closes three wires of an electrical circuit b. Has three magnetic poles c. Is used for three phase circuits only d. Requires three toggles a. Opens and closes three wires of an electrical circuit (4-078-6.1) A conductor's resistance is: Select one: a. Directly proportional to its cross-sectional area. b. Inversely proportional to its cross-sectional area. c. Unaffected by its cross-sectional area. d. Unaffected by its temperature b. Inversely proportional to its cross-sectional area. (4-078-1.4) Electromotive force: Select one: