ATT TEST 8 EXAM NEWEST 2025 ACTUAL EXAM COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!

ATT TEST 8 EXAM NEWEST 2025 ACTUAL EXAM COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!! A constant 12 VDC output is maintained when input is between what values? (IC regulator) - ANSWER-14.5-30V .Connecting several inputs to inverting (-) input produces which type of amp? - ANSWER-Summing amp .External circuits stabilize op amp operation using what type of feedback? - ANSWER-Degenerative .How are op amps packaged? - ANSWER-IC chip .How are relays shown on schematics? - ANSWER-De-Energized .How do you calculate base voltage of Q1 in voltage regulator? - ANSWER-Vz + Vce = Vb .How do you determine output of summing amp? - ANSWER-Output = -(input1 + input2) .How is frequency determined for bridge rectifier? - ANSWER-Output is twice the input frequency .How is frequency determined for full wave rectifier? - ANSWER-Output is twice the input frequency .How is frequency determined for half wave rectifier? - ANSWER-Output frequency is same as input frequency .How is SCR turned off? - ANSWER-Current flow must be interrupted with switch or by shorting anode to cathode .How is turn on voltage determined unijunction transistor? - ANSWER-Eta times Vcc .How type of components do filters use? - ANSWER-Reactive components .If a diode is shorted in power supply what happens? - ANSWER-LED wont illuminate, AC isnt converted to DC .If diode is open in power supply what happens? - ANSWER-LED wont illuminate, pulsating DC missing cycle .If input voltage decreases in voltage regulator, Q2 must do what to maintain constant output? - ANSWER-Decrease resistance to drop less voltage (voltage of Q2 decrease) .If input voltage increases in voltage regulator, Q2 must do what to maintain constant output? - ANSWER-Increase resistance to drop more voltage (voltage of Q2 increase) .If load current decreases in voltage regulator, how is base to emitter biasing affected? - ANSWER-FB decreases .If load current decreases or DC input increases, what needs to be done to maintain constant level of V out (series volt regulator)? - ANSWER-Increase R1 resistance to increase voltage drop on R1 .If load current increases in voltage regulator what needs to be done to maintain constant output? - ANSWER-Decrease resistance to drop less voltage .If load current increases in voltage regulator, how is base to emitter biasing affected? - ANSWER-FB increases .If load current increases in voltage regulator, what needs to be done to maintain constant output? - ANSWER-Decrease resistance to drop less volts .If load current increases or DC input decreases, what needs to be done to maintain constant level of V out (series voltage regulator)? - ANSWER-Increase R1 resistance to decreases voltage drop on R1 .If reverse biased lower than Vz, what is output voltage of shunt regulator? - ANSWER-Output is applied voltage .If voltage decreases what must happen to keep output voltage constant (zener diode regulator)? - ANSWER-Q1 collector-emitter resistance must decrease .If voltage increases what must happen to keep output voltage constant (zener diode regulator)? - ANSWER-Q1 collector-emitter resistance must increase .In a series voltage regulator, V out INCREASES when what happens? - ANSWER-Load current decreases OR DC input increases .In a voltage regulator, which component maintains a constant V out? - ANSWER-Q1 .In a voltage regulator, which components set voltage? - ANSWER-D1 and Q2 .In a zener diode regulator, which faults cause output voltage to approach applied voltage? - ANSWER-D1 open, Short between Collector-Emitter .In parallel voltage regulator, V out decreases when what happens? - ANSWER-When DC input decreases or load current increases .In parallel voltage regulator, V out increases when what happens? - ANSWER-DC input increases or load current decreases .In series voltage regulator, V out DECREASES when what happens? - ANSWER-Load current increases OR DC input decreases