CETA PREP TEST study guide Test QUESTIONS With 100%
Verified Answers
If a class A differential amplifier is using only one of its two possible inputs,
what will the output shape be? - ANSWER Exactly the same as the one
input
Voltage is: - ANSWER Potential difference between two points
What is a term describing many op-amp circuits? - ANSWER inverting
The gain of an op-amp is directly, but inversely, related to bandwidth as
input frequency increases: - ANSWER Always
The audio detector circuit in an AM radio most commonly is a: - ANSWER
diode
A differential amplifier with two identical in-phase signals on the inputs will
have an output of: - ANSWER zero
A fuse which has its fusible wire wrapped around an insulator is: -
ANSWER Slo-blo type fuse
The power transformer in a power supply: - ANSWER Might step voltages
up or down
Which of the below would be considered "basic" components of a non
switching power supply? - ANSWER Filter, regulator, rectifier, transformer
The average of a full sine wave rectified voltage is : - ANSWER .637 X
Peak
, The ripple frequency for a half wave rectifier operating from 60 Hz
electrical power is: - ANSWER 60 HZ
The effective voltage of a 100v Peak-to-peak sine wave is: - ANSWER
35.35 VAC
A pi filter is an inductor with: - ANSWER A capacitor at each end to
common
An inductor opposes any change in: - ANSWER current
A capacitor opposes any change in: - ANSWER voltage
A capacitor will charge to what percent of full charge in one RC time? -
ANSWER 63.2
Moving one plate of a capacitor further away from the other will: -
ANSWER decrease capacitance
The fact that an inductor opposes any change in current is true of: -
ANSWER AC and DC signals
If you increase the value of a capacitor, the capacitive reactance will: -
ANSWER decrease
In checking a capacitor to see if it is really shorted, open or leaky: -
ANSWER you would use the highest ohm meter range.
The capacitor in a power supply capacitive filter: - ANSWER Is in parallel
with the load
The time required to discharge a capacitor depends on the: - ANSWER
combination of LRC across its terminals.
With a given filter type, pure filtering is easiest with: - ANSWER High
, frequencies
A power supply whose output voltage does not change whether the load is
light or heavy would have what percent of regulation? - ANSWER 0
A power supply which measures 50 volts when under a small load and 40
volts under a heavy load has what percent regulation using the % of
regulation formula(%=(EnL-EfL)/EfLX100)? - ANSWER 20
Correctly connecting a properly rated zener diode across a power supply
load will: - ANSWER limit the output DC
A triac in a power control circuit: - ANSWER acts as an on/off switch
What specification should not be of concern regarding wire conductors? -
ANSWER capacitance
The normal open circuit voltage for each nickel-cadmium cell is
approximately? - ANSWER 1.2 volts
Lead free type solder for electronics work is made from: - ANSWER Silver
and Tin
Soldering stations used for electronics circuit-board work have historically
been(approximately): - ANSWER 30 Watts
Solder flux mainly: - ANSWER removes oxides on metals to be soldered
Laminations used for the core of a transformer: - ANSWER must be
insulated from each other
I=1 amp, R=10,000 ohms. What is the value of the voltage? - ANSWER
10,000 volts
Verified Answers
If a class A differential amplifier is using only one of its two possible inputs,
what will the output shape be? - ANSWER Exactly the same as the one
input
Voltage is: - ANSWER Potential difference between two points
What is a term describing many op-amp circuits? - ANSWER inverting
The gain of an op-amp is directly, but inversely, related to bandwidth as
input frequency increases: - ANSWER Always
The audio detector circuit in an AM radio most commonly is a: - ANSWER
diode
A differential amplifier with two identical in-phase signals on the inputs will
have an output of: - ANSWER zero
A fuse which has its fusible wire wrapped around an insulator is: -
ANSWER Slo-blo type fuse
The power transformer in a power supply: - ANSWER Might step voltages
up or down
Which of the below would be considered "basic" components of a non
switching power supply? - ANSWER Filter, regulator, rectifier, transformer
The average of a full sine wave rectified voltage is : - ANSWER .637 X
Peak
, The ripple frequency for a half wave rectifier operating from 60 Hz
electrical power is: - ANSWER 60 HZ
The effective voltage of a 100v Peak-to-peak sine wave is: - ANSWER
35.35 VAC
A pi filter is an inductor with: - ANSWER A capacitor at each end to
common
An inductor opposes any change in: - ANSWER current
A capacitor opposes any change in: - ANSWER voltage
A capacitor will charge to what percent of full charge in one RC time? -
ANSWER 63.2
Moving one plate of a capacitor further away from the other will: -
ANSWER decrease capacitance
The fact that an inductor opposes any change in current is true of: -
ANSWER AC and DC signals
If you increase the value of a capacitor, the capacitive reactance will: -
ANSWER decrease
In checking a capacitor to see if it is really shorted, open or leaky: -
ANSWER you would use the highest ohm meter range.
The capacitor in a power supply capacitive filter: - ANSWER Is in parallel
with the load
The time required to discharge a capacitor depends on the: - ANSWER
combination of LRC across its terminals.
With a given filter type, pure filtering is easiest with: - ANSWER High
, frequencies
A power supply whose output voltage does not change whether the load is
light or heavy would have what percent of regulation? - ANSWER 0
A power supply which measures 50 volts when under a small load and 40
volts under a heavy load has what percent regulation using the % of
regulation formula(%=(EnL-EfL)/EfLX100)? - ANSWER 20
Correctly connecting a properly rated zener diode across a power supply
load will: - ANSWER limit the output DC
A triac in a power control circuit: - ANSWER acts as an on/off switch
What specification should not be of concern regarding wire conductors? -
ANSWER capacitance
The normal open circuit voltage for each nickel-cadmium cell is
approximately? - ANSWER 1.2 volts
Lead free type solder for electronics work is made from: - ANSWER Silver
and Tin
Soldering stations used for electronics circuit-board work have historically
been(approximately): - ANSWER 30 Watts
Solder flux mainly: - ANSWER removes oxides on metals to be soldered
Laminations used for the core of a transformer: - ANSWER must be
insulated from each other
I=1 amp, R=10,000 ohms. What is the value of the voltage? - ANSWER
10,000 volts
