CET Study Guide – Comprehensive Preparation Material for Certified Electronics Technician
Exam
The "1" in binary number carries a decimal weight of ___________. - ANS ✔✔32
Which of these is within tolerance for a resistor that is color coded red, black, red and gold? -
ANS ✔✔2000 and 1900 ohm's
Which would be the most likely cause of hum in an amplifier- but only when it is switched to the
CD position? - ANS ✔✔Bad shielded cable from the CD to the amplifier input
When measuring power to a speaker, a doubling of the power represents a 3 dB increase. - ANS
✔✔True
A voltmeter that converts AC to DC by rectifying the voltage would be used to indicate the
correct value of measured _______. - ANS ✔✔Sine waves
Regarding PC's, what does "RAM" mean? - ANS ✔✔Random Access memory
What is the binary number for decimal number 6? - ANS ✔✔0110
In order for a capacitor to function as a coupling capacitor, Xc, must be less than ______ at the
lowest frequency at which the AC circuit is operating. - ANS ✔✔0.1 R
The term for the combination of resistance and reactance that restricts the flow of alternating
current is _______. - ANS ✔✔Impedance
Adding the binary numbers 110111 and 001101 will give which one of these results? - ANS
✔✔1000100
, How should a fuse be installed in a circuit to ensure proper operation? - ANS ✔✔In series with
the load
A lead-acid battery cell, when charged, has a nominal value of ________. - ANS ✔✔3.4 volts
Common analog telephone lines, on hook, may be expected to have what DC voltage level on
one of the wires? - ANS ✔✔-48 v
A dual-trace scope has ___________. - ANS ✔✔Two vertical inputs
What determines the velocity factor in a transmission line? - ANS ✔✔the dielectric material of
the line
As the input frequency to an operational amplifier increases over a broad frequency range (e.g.
1kHz to 1gHz), the output signal level usually ________. - ANS ✔✔decreases
Total power in a series circuit is determined by the _________. - ANS ✔✔Source voltage
multiplied by the current
Integrated circuit failures often exhibit ____________. - ANS ✔✔Audible noise
Which of the following circuit configurations has the same amount of voltage drop across each
of its components? - ANS ✔✔parallel
The Y axis of an oscilloscope is used to measure - ANS ✔✔amplitude
Exam
The "1" in binary number carries a decimal weight of ___________. - ANS ✔✔32
Which of these is within tolerance for a resistor that is color coded red, black, red and gold? -
ANS ✔✔2000 and 1900 ohm's
Which would be the most likely cause of hum in an amplifier- but only when it is switched to the
CD position? - ANS ✔✔Bad shielded cable from the CD to the amplifier input
When measuring power to a speaker, a doubling of the power represents a 3 dB increase. - ANS
✔✔True
A voltmeter that converts AC to DC by rectifying the voltage would be used to indicate the
correct value of measured _______. - ANS ✔✔Sine waves
Regarding PC's, what does "RAM" mean? - ANS ✔✔Random Access memory
What is the binary number for decimal number 6? - ANS ✔✔0110
In order for a capacitor to function as a coupling capacitor, Xc, must be less than ______ at the
lowest frequency at which the AC circuit is operating. - ANS ✔✔0.1 R
The term for the combination of resistance and reactance that restricts the flow of alternating
current is _______. - ANS ✔✔Impedance
Adding the binary numbers 110111 and 001101 will give which one of these results? - ANS
✔✔1000100
, How should a fuse be installed in a circuit to ensure proper operation? - ANS ✔✔In series with
the load
A lead-acid battery cell, when charged, has a nominal value of ________. - ANS ✔✔3.4 volts
Common analog telephone lines, on hook, may be expected to have what DC voltage level on
one of the wires? - ANS ✔✔-48 v
A dual-trace scope has ___________. - ANS ✔✔Two vertical inputs
What determines the velocity factor in a transmission line? - ANS ✔✔the dielectric material of
the line
As the input frequency to an operational amplifier increases over a broad frequency range (e.g.
1kHz to 1gHz), the output signal level usually ________. - ANS ✔✔decreases
Total power in a series circuit is determined by the _________. - ANS ✔✔Source voltage
multiplied by the current
Integrated circuit failures often exhibit ____________. - ANS ✔✔Audible noise
Which of the following circuit configurations has the same amount of voltage drop across each
of its components? - ANS ✔✔parallel
The Y axis of an oscilloscope is used to measure - ANS ✔✔amplitude
