CETA COMPREHENSIVE SET ANSWERS AND
QUESTIONS SET A+
✔✔The display of a DMM would probably be: - ✔✔LCD
✔✔A disadvantage of LCD is: - ✔✔Environmental temperature sensitivity
✔✔A series DC motor with no load: - ✔✔maybe damaged by excessive speed
✔✔Which motor maintains a constant speed with changing load? - ✔✔Shunt
✔✔A small power drill or electric mixer would probably be powered by a - ✔✔Series
Motor
✔✔0 db when referring to audio signals means: - ✔✔decibels referenced to 1 milliwatt
✔✔If a class A differential amplifier is using only one of its two possible inputs, what will
the output shape be? - ✔✔Exactly the same as the one input
✔✔Voltage is: - ✔✔Potential difference between two points
✔✔What is a term describing many op-amp circuits? - ✔✔inverting
✔✔The gain of an op-amp is directly, but inversely, related to bandwidth as input
frequency increases: - ✔✔Always
✔✔The audio detector circuit in an AM radio most commonly is a: - ✔✔diode
✔✔A differential amplifier with two identical in-phase signals on the inputs will have an
output of: - ✔✔zero
, ✔✔A fuse which has its fusible wire wrapped around an insulator is: - ✔✔Slo-blo type
fuse
✔✔The power transformer in a power supply: - ✔✔Might step voltages up or down
✔✔Which of the below would be considered "basic" components of a non switching
power supply? - ✔✔Filter, regulator, rectifier, transformer
✔✔The average of a full sine wave rectified voltage is : - ✔✔.637 X Peak
✔✔The ripple frequency for a half wave rectifier operating from 60 Hz electrical power
is: - ✔✔60 HZ
✔✔The effective voltage of a 100v Peak-to-peak sine wave is: - ✔✔35.35 VAC
✔✔A pi filter is an inductor with: - ✔✔A capacitor at each end to common
✔✔An inductor opposes any change in: - ✔✔current
✔✔A capacitor opposes any change in: - ✔✔voltage
✔✔A capacitor will charge to what percent of full charge in one RC time? - ✔✔63.2
✔✔Moving one plate of a capacitor further away from the other will: - ✔✔decrease
capacitance
✔✔The fact that an inductor opposes any change in current is true of: - ✔✔AC and DC
signals
✔✔If you increase the value of a capacitor, the capacitive reactance will: - ✔✔decrease
✔✔In checking a capacitor to see if it is really shorted, open or leaky: - ✔✔you would
use the highest ohm meter range.
✔✔The capacitor in a power supply capacitive filter: - ✔✔Is in parallel with the load
✔✔The time required to discharge a capacitor depends on the: - ✔✔combination of
LRC across its terminals.
✔✔With a given filter type, pure filtering is easiest with: - ✔✔High frequencies
✔✔A power supply whose output voltage does not change whether the load is light or
heavy would have what percent of regulation? - ✔✔0
QUESTIONS SET A+
✔✔The display of a DMM would probably be: - ✔✔LCD
✔✔A disadvantage of LCD is: - ✔✔Environmental temperature sensitivity
✔✔A series DC motor with no load: - ✔✔maybe damaged by excessive speed
✔✔Which motor maintains a constant speed with changing load? - ✔✔Shunt
✔✔A small power drill or electric mixer would probably be powered by a - ✔✔Series
Motor
✔✔0 db when referring to audio signals means: - ✔✔decibels referenced to 1 milliwatt
✔✔If a class A differential amplifier is using only one of its two possible inputs, what will
the output shape be? - ✔✔Exactly the same as the one input
✔✔Voltage is: - ✔✔Potential difference between two points
✔✔What is a term describing many op-amp circuits? - ✔✔inverting
✔✔The gain of an op-amp is directly, but inversely, related to bandwidth as input
frequency increases: - ✔✔Always
✔✔The audio detector circuit in an AM radio most commonly is a: - ✔✔diode
✔✔A differential amplifier with two identical in-phase signals on the inputs will have an
output of: - ✔✔zero
, ✔✔A fuse which has its fusible wire wrapped around an insulator is: - ✔✔Slo-blo type
fuse
✔✔The power transformer in a power supply: - ✔✔Might step voltages up or down
✔✔Which of the below would be considered "basic" components of a non switching
power supply? - ✔✔Filter, regulator, rectifier, transformer
✔✔The average of a full sine wave rectified voltage is : - ✔✔.637 X Peak
✔✔The ripple frequency for a half wave rectifier operating from 60 Hz electrical power
is: - ✔✔60 HZ
✔✔The effective voltage of a 100v Peak-to-peak sine wave is: - ✔✔35.35 VAC
✔✔A pi filter is an inductor with: - ✔✔A capacitor at each end to common
✔✔An inductor opposes any change in: - ✔✔current
✔✔A capacitor opposes any change in: - ✔✔voltage
✔✔A capacitor will charge to what percent of full charge in one RC time? - ✔✔63.2
✔✔Moving one plate of a capacitor further away from the other will: - ✔✔decrease
capacitance
✔✔The fact that an inductor opposes any change in current is true of: - ✔✔AC and DC
signals
✔✔If you increase the value of a capacitor, the capacitive reactance will: - ✔✔decrease
✔✔In checking a capacitor to see if it is really shorted, open or leaky: - ✔✔you would
use the highest ohm meter range.
✔✔The capacitor in a power supply capacitive filter: - ✔✔Is in parallel with the load
✔✔The time required to discharge a capacitor depends on the: - ✔✔combination of
LRC across its terminals.
✔✔With a given filter type, pure filtering is easiest with: - ✔✔High frequencies
✔✔A power supply whose output voltage does not change whether the load is light or
heavy would have what percent of regulation? - ✔✔0
