ATT COMP PRACTICE TEST EXAM QUESTIONS AND
SOLUTIONS MARKED A+
✔✔what value of ac voltage does oscope directly measure? - ✔✔Peak to Peak
✔✔what is the minimum Channel requirement for the display with two waveforms? -
✔✔dual Trace
✔✔what occurs when positive current hits a capacitor plate? - ✔✔it builds up a positive
charge
✔✔step up Transformers produce..... - ✔✔a higher es than ep
✔✔Transformers that has a turn ratio of 7:2..... - ✔✔steps down voltage
✔✔an open in the primary of a transformer.... - ✔✔produces no current in the secondary
✔✔an open in the secondary of a transformer prevents and out voltage in.... - ✔✔the
open secondary
✔✔a partial short in the primary of a transformer.... - ✔✔increase is secondary voltage
✔✔a complete short in the secondary Transformer.... - ✔✔eliminates secondary voltage
✔✔which part of a power supply unit changes pulsating DC to smooth DC? - ✔✔the
filter
✔✔what part of a power supply unit changes AC to pulsating DC? - ✔✔the rectifier
✔✔what section of a power supply unit maintains a constant output voltage? - ✔✔the
regulator
✔✔current flowing through a relays contacts in one direction can only cause what
failure? - ✔✔coned and cratered contacts
✔✔you clean relay contacts with what tool? - ✔✔a burnishing tool
✔✔how do you fix a sealed relay? - ✔✔replace the entire relay
✔✔what is the effect of an open component? - ✔✔prevent current flow
✔✔what is the effect of a shorted component? - ✔✔eliminates the component from the
circuit
SOLUTIONS MARKED A+
✔✔what value of ac voltage does oscope directly measure? - ✔✔Peak to Peak
✔✔what is the minimum Channel requirement for the display with two waveforms? -
✔✔dual Trace
✔✔what occurs when positive current hits a capacitor plate? - ✔✔it builds up a positive
charge
✔✔step up Transformers produce..... - ✔✔a higher es than ep
✔✔Transformers that has a turn ratio of 7:2..... - ✔✔steps down voltage
✔✔an open in the primary of a transformer.... - ✔✔produces no current in the secondary
✔✔an open in the secondary of a transformer prevents and out voltage in.... - ✔✔the
open secondary
✔✔a partial short in the primary of a transformer.... - ✔✔increase is secondary voltage
✔✔a complete short in the secondary Transformer.... - ✔✔eliminates secondary voltage
✔✔which part of a power supply unit changes pulsating DC to smooth DC? - ✔✔the
filter
✔✔what part of a power supply unit changes AC to pulsating DC? - ✔✔the rectifier
✔✔what section of a power supply unit maintains a constant output voltage? - ✔✔the
regulator
✔✔current flowing through a relays contacts in one direction can only cause what
failure? - ✔✔coned and cratered contacts
✔✔you clean relay contacts with what tool? - ✔✔a burnishing tool
✔✔how do you fix a sealed relay? - ✔✔replace the entire relay
✔✔what is the effect of an open component? - ✔✔prevent current flow
✔✔what is the effect of a shorted component? - ✔✔eliminates the component from the
circuit
