CETa UPDATED EXAM STUDY GUIDE QUESTIONS AND
ANSWERS GRADED A+
✔✔A ripple counter: - ✔✔Is two or more logical flip-flops connected sequentially with the
input pulses toggling the first one
✔✔When voltage is applied to a capacitor: - ✔✔current is maximum at first, then
reduces as the capacitor becomes charges.
✔✔An electrolytic capacitor in series between the power transformer and the rectifiers
in a power supply: - ✔✔is part of a voltage doubler circuit
✔✔Information travels through optic fiber via the flow of: - ✔✔photons
✔✔You would most likely prefer an analog VOM over a DMM for: - ✔✔accuracy
✔✔Which of these circuits would most likely use a zener diode? - ✔✔a power regulator
✔✔A block in a digital diagram is called a NOR. Which is true? - ✔✔It is a NOT OR or
Inverted OR
✔✔Which of these statements is most true relating to schematic diagrams of electronic
devices? - ✔✔They represent signal paths
✔✔In personal computer technology, ROM indicates: - ✔✔memory that may only be
read from
✔✔A light emitting diode will light when: - ✔✔It is forward biased.
✔✔A zener diode is rated 6.3V. This tells you: - ✔✔it conducts to limit the voltage
across it to 6.3V
✔✔A triac is frequently used: - ✔✔for motor speed control, to electronically turn
equipment on and off
✔✔A technician must be knowledgeable about "ESD": - ✔✔because static discharge
can destroy many components.
✔✔In a motor, the counter-emf voltage induced in the armature the source current. -
✔✔subtracts from
✔✔One significant difference between a TV antenna and a CB antenna would be: -
✔✔TV is polarized horizontal while CB is vertical
, ✔✔"Switching power supplies": - ✔✔sometimes called DC to DC converters, maybe
operated of AC or DC sources
✔✔Which of these would you likely find in a DC motor speed control circuit? - ✔✔An op-
amp
✔✔A transformer on a schematic has two leads connected to the primary and three to
the secondary, one to each end and one in the middle. This is an: - ✔✔center tapped
secondary transformer
✔✔The 9 pin DB9 connector serial port on a PC is commonly called the: - ✔✔RS232
standard
✔✔Three capacitors, of 470pf, 560pf and .47pf are in parallel with each other. The total
is: - ✔✔1030.47pf
✔✔Ohm's law provides equations relating to: - ✔✔Volts, amps and resistance
✔✔A power source such as a generator or battery might be compared to what
component in a water supply system? - ✔✔A water tank
✔✔Which of these is a good indication of the quality of an analog meter? - ✔✔The
ohms per volt rating
✔✔The vertical axis of an oscilloscope display is also called the: - ✔✔Y axis
✔✔If you increase the value of an inductor, the inductive reactance will: - ✔✔increase
✔✔Which would least likely be a high-voltage(above 1000V) capacitor? - ✔✔electrolytic
✔✔The rechargeable cell currently used in many consumer portable products would be:
- ✔✔Lithium-ion
✔✔A solid-state regulator: - ✔✔Varies conduction to maintain a level output voltage
✔✔A current-carrying conductor is placed in a magnetic field perpendicular to the lines
of flux. It tends to move in what direction to the force of magnetic lines of flux, as
determined by Flemings left-hand rule. - ✔✔an opposite
✔✔The antenna used to compare the gain of other antennas is called a: - ✔✔dipole
ANSWERS GRADED A+
✔✔A ripple counter: - ✔✔Is two or more logical flip-flops connected sequentially with the
input pulses toggling the first one
✔✔When voltage is applied to a capacitor: - ✔✔current is maximum at first, then
reduces as the capacitor becomes charges.
✔✔An electrolytic capacitor in series between the power transformer and the rectifiers
in a power supply: - ✔✔is part of a voltage doubler circuit
✔✔Information travels through optic fiber via the flow of: - ✔✔photons
✔✔You would most likely prefer an analog VOM over a DMM for: - ✔✔accuracy
✔✔Which of these circuits would most likely use a zener diode? - ✔✔a power regulator
✔✔A block in a digital diagram is called a NOR. Which is true? - ✔✔It is a NOT OR or
Inverted OR
✔✔Which of these statements is most true relating to schematic diagrams of electronic
devices? - ✔✔They represent signal paths
✔✔In personal computer technology, ROM indicates: - ✔✔memory that may only be
read from
✔✔A light emitting diode will light when: - ✔✔It is forward biased.
✔✔A zener diode is rated 6.3V. This tells you: - ✔✔it conducts to limit the voltage
across it to 6.3V
✔✔A triac is frequently used: - ✔✔for motor speed control, to electronically turn
equipment on and off
✔✔A technician must be knowledgeable about "ESD": - ✔✔because static discharge
can destroy many components.
✔✔In a motor, the counter-emf voltage induced in the armature the source current. -
✔✔subtracts from
✔✔One significant difference between a TV antenna and a CB antenna would be: -
✔✔TV is polarized horizontal while CB is vertical
, ✔✔"Switching power supplies": - ✔✔sometimes called DC to DC converters, maybe
operated of AC or DC sources
✔✔Which of these would you likely find in a DC motor speed control circuit? - ✔✔An op-
amp
✔✔A transformer on a schematic has two leads connected to the primary and three to
the secondary, one to each end and one in the middle. This is an: - ✔✔center tapped
secondary transformer
✔✔The 9 pin DB9 connector serial port on a PC is commonly called the: - ✔✔RS232
standard
✔✔Three capacitors, of 470pf, 560pf and .47pf are in parallel with each other. The total
is: - ✔✔1030.47pf
✔✔Ohm's law provides equations relating to: - ✔✔Volts, amps and resistance
✔✔A power source such as a generator or battery might be compared to what
component in a water supply system? - ✔✔A water tank
✔✔Which of these is a good indication of the quality of an analog meter? - ✔✔The
ohms per volt rating
✔✔The vertical axis of an oscilloscope display is also called the: - ✔✔Y axis
✔✔If you increase the value of an inductor, the inductive reactance will: - ✔✔increase
✔✔Which would least likely be a high-voltage(above 1000V) capacitor? - ✔✔electrolytic
✔✔The rechargeable cell currently used in many consumer portable products would be:
- ✔✔Lithium-ion
✔✔A solid-state regulator: - ✔✔Varies conduction to maintain a level output voltage
✔✔A current-carrying conductor is placed in a magnetic field perpendicular to the lines
of flux. It tends to move in what direction to the force of magnetic lines of flux, as
determined by Flemings left-hand rule. - ✔✔an opposite
✔✔The antenna used to compare the gain of other antennas is called a: - ✔✔dipole
