ACET study guide Exam Questions with 100% Correct Answers

ACET study guide Exam Questions with 100% Correct Answers Binary is in vaules of? - answer1 , 2, 4, 8...... so on incressed by *2 each following Octal place vaules? - answer0-7 each digit holds a place vaule of 3 binargy digits Hex - answer0-9 followed by A-F. A=10 each digit holds 4 in binary Binary divide by rule - answerWhen you divide, no remainder =0, remainder =1 Don't carry foward the remainder. Revese the reminders when translating to binary Classes of fire - answerClass A combustable metrails such as wood Class B flammable liquids & gases Class C electrical fire Class D metal fire.. flammable metals class K Cooking oils or fats When did the CET cert program begin? - answer1965 When did the ETA initate the reneawl? - answer1996 B+ or supply votages products are considered to be? - answer+12 to 300V DC Shaded componets on a schematics mean? - answerOnly exact compents can be replaced Leakage current in electronics should not exceed? - answer500uA Second degree skin burns should? - answerNot be treated with ice and a banadge Rules describing the fire or toxicity retardant types of cabling which may be installed in buildings is contained in? - answerNEC article 770 ESD is most decrtuive to? - answerCMOS semicondutors Lethal current is how many amps? - answer100mA Atomic nunumber - answerNumber of Protons Atmoic weight - answernumber of proton and nutrons Ferrite - answerIs a common inductor core material Total Impedance in a series circuit is found by - answerFinding the net reactance and the net reistance, square each separately, add them together and then find the square root of the sum IN AC curcuit as applied voltage freq changes upward, the inductive reactance in the circuit will? - answerIncress In an AC circuit as the applied voltage frequency increases the capactive reactance in the circuit will - answerIncress In a series circuit when the inductive reactance equal the capacitor reactnces the circuit has______ Impedance - answerMinimum In a parallel circuit when the inductive reactance equals cpacitor reactance, the circuit has_______________ impedance - answerMaximum Resonance is when - answerThe total of the inductive reactances in the circuit equal the toal of all capacitive reactnces _____ cells are prone to battery memory - answerNiCad A conduction loop in motion through magnetic lines of flux has a current induced in it. The physical law that explains this is what? - answerLenz's law An AC generator is also know as - answerSlip ring What element of a DC generator distinguishes it from an AC generator? - answerCommutator AC motor speed dpeneds on the - answerfrequency oif the violtage applied to it. What element of a synchronous AC motor provides startup torque for the motor? - answerSquirrel cage An AC inductor motor require what to operate? - answerSlip IN a variable cap, as the plates open the capacitance: - answerDecreasses Which of the follow cause a generator to produce DC rather than AC voltage? Brushes Armature Commuator Field windings - answerCommutator A 3/8-inch diameter by 3/16-inch caramic disk capactormarked 47 is most likely what vaule? 47nF 47pF 47uF 47mF - answer47 pF Battery voltage a cell provides - answercarbon-zin dry cell provides 1.5vDC Alkaline battiers 1.5vDC Lithium 1.5-3.6 Lead-acid 2.1vDC negative temperature coefficient - answerAs heat goes up, resistance goes down A capacitor will charge to 63.2% of full charge in one time constant - answerin 5 RC times it will be virtually fully charged Varactor - answerA semicondutor with cpactive qualited. The capacitance can vary as the applied reverse biase voltage changes. A high current MOV device would most likely be found - answerin a surge suppressor Which of these would most likely be used as a signal amp? Triode Magnetron Triac DAC - answerTriode