CETA PRACTICE TEST QUESTIONS AND
CORRECT ANSWERS AND
RATIONALES|ALREADY GRADED A|
What is impedance? - ANSWER>>The resistance of a component at a given
frequency
A two terminal device that conducts in only one direction. - ANSWER>>Diode
Insulating board containing conductive tracks for circuit connections. -
ANSWER>>Printed Circuit Board
An electrical device used to store electrical charge. - ANSWER>>Capacitor
When did the ETA initiate renewal? - ANSWER>>1996
all ETA certifications require the passage of the associate CET exam? -
ANSWER>>False
to qualify for master CET status, the examinee must attain a score of 85% on
each separate exam? - ANSWER>>False
The coaxial cable leading to a cable TV is a 75 ohm transmission line. If you
use 10Base2 coax cable for networking, that is a _____ ohm transmission line. -
ANSWER>>50
an associate CET cannot attempt one of the specialty exams? - ANSWER>>false
renewal requires payment of a fee and retesting or providing at least 40 hours
of upgrade training within a 4 year period? - ANSWER>>true
a worker may become certified by ETA as a CST without also becomming
certified as a CET? - ANSWER>>true
,B+, or supply voltages in electronics products are considered to be: -
ANSWER>>+12V to 300V DC
leakage current in an electronic product, between either of the AC power cord
conductors and the chassis or any other exposed metal parts should not exceed:
- ANSWER>>500 microamps
the associate CET exam may be taken after the journeyman exam? -
ANSWER>>false
shaded components on electronic schematics mean: - ANSWER>>only exact
replacement parts may be used
ingested solder fumes or particles_____ - ANSWER>>are toxic
second degree skin burns should ______ - ANSWER>>not be treated with ice
and bandage pack
ESD and static discharge is most destructive to: - ANSWER>>CMOS
semiconductors
if you have never recieved formal training and practiced cpr on a person or
dummy, in the event of finding a fellow worker not breathing, you_________. -
ANSWER>>should not attempt it, but call for help
when working at heights above 6 feet, a _____ is required by OSHA rules. -
ANSWER>>full body harness attached to a lanyard which prevents more than a
6' drop.
What is meant by "transformer action"? - ANSWER>>The transfer of energy
from one circuit to another circuit by
electromagnetic induction
residual voltage is associated with ______. - ANSWER>>charge retained by
capacitors.
What does the acronym ESD stand for? - ANSWER>>Electrostatic Discharge
,Current amounts between ______ and _____ can be lethal. - ANSWER>>100mA,
200mA
What is the number one concern in regards to electrical safety? -
ANSWER>>Shock
Bohr's Atomic Model consists of what three components? - ANSWER>>Protons,
neutrons and electrons
Electrons are arranged in _____ around a nucleus. - ANSWER>>shells
What are three types of materials used in electronics? - ANSWER>>Conductors,
semi-conductors and insulators
In the United States there are five common classifications of fires, which are: -
ANSWER>>A, B, C, D, K.
Coulomb's Law describes the forces of attraction or repulsion between
electrical charges, which are ______________ to the product of the charges
______________ to the distance between them. - ANSWER>>directly
proportional, inversely proportional
The magnetic field that surrounds a magnet can best be described as
invisible lines of force, and are commonly referred to as: - ANSWER>>lines of
flux.
An analog multimeter (AMM) checks for: - ANSWER>>voltage, current and
resistance.
An oscilloscope with two vertical inputs, is commonly referred to as a
_______ oscilloscope. - ANSWER>>dual-trace
Voltage or potential difference is the measure of potential energy between
two points in a circuit and is commonly referred to as: - ANSWER>>voltage drop.
What components value is measured in millihenries? - ANSWER>>Inductor
, Ohm's Law characterizes the relationship between: - ANSWER>>power,
resistance, current and voltage.
A resistor has three color bands of red, brown and brown. What is the ohmic
value of this resistor? - ANSWER>>210 Ohms
Ohm's Law states that resistance is calculated by voltage divided by current.
Using Ohms law, how do you determine power? - ANSWER>>Voltage times
current
Total resistance in a series circuit equals: - ANSWER>>the sum of all the resistor
values within the circuit.
If a series circuit has three resistors valued at 10k Ohms, 15k Ohms and 20k
Ohms, with a voltage source of 15V, the total current will be_____. -
ANSWER>>333.33uA
Current in a parallel circuit is: - ANSWER>>inversely proportional to the circuits
resistance.
With three 2.5k resistors and one 3.4k resistor in parallel, the total resistance
is: - ANSWER>>669.29 Ohms
With one series 8 Ohm resistor connected to two in-parallel resistors, 20 and
30 ohms respectively, what is the total resistance (Rt)? - ANSWER>>20 Ohms
Given a battery rated at 350 ampere-hours how many hours will the battery be
able to provide 7 amperes? - ANSWER>>50
The basic properties associated with alternating voltage and current are: -
ANSWER>>frequency, period, wavelength and amplitude.
In an inductor/coil inductance varies as the _______ of the number of turns. -
ANSWER>>Square
CORRECT ANSWERS AND
RATIONALES|ALREADY GRADED A|
What is impedance? - ANSWER>>The resistance of a component at a given
frequency
A two terminal device that conducts in only one direction. - ANSWER>>Diode
Insulating board containing conductive tracks for circuit connections. -
ANSWER>>Printed Circuit Board
An electrical device used to store electrical charge. - ANSWER>>Capacitor
When did the ETA initiate renewal? - ANSWER>>1996
all ETA certifications require the passage of the associate CET exam? -
ANSWER>>False
to qualify for master CET status, the examinee must attain a score of 85% on
each separate exam? - ANSWER>>False
The coaxial cable leading to a cable TV is a 75 ohm transmission line. If you
use 10Base2 coax cable for networking, that is a _____ ohm transmission line. -
ANSWER>>50
an associate CET cannot attempt one of the specialty exams? - ANSWER>>false
renewal requires payment of a fee and retesting or providing at least 40 hours
of upgrade training within a 4 year period? - ANSWER>>true
a worker may become certified by ETA as a CST without also becomming
certified as a CET? - ANSWER>>true
,B+, or supply voltages in electronics products are considered to be: -
ANSWER>>+12V to 300V DC
leakage current in an electronic product, between either of the AC power cord
conductors and the chassis or any other exposed metal parts should not exceed:
- ANSWER>>500 microamps
the associate CET exam may be taken after the journeyman exam? -
ANSWER>>false
shaded components on electronic schematics mean: - ANSWER>>only exact
replacement parts may be used
ingested solder fumes or particles_____ - ANSWER>>are toxic
second degree skin burns should ______ - ANSWER>>not be treated with ice
and bandage pack
ESD and static discharge is most destructive to: - ANSWER>>CMOS
semiconductors
if you have never recieved formal training and practiced cpr on a person or
dummy, in the event of finding a fellow worker not breathing, you_________. -
ANSWER>>should not attempt it, but call for help
when working at heights above 6 feet, a _____ is required by OSHA rules. -
ANSWER>>full body harness attached to a lanyard which prevents more than a
6' drop.
What is meant by "transformer action"? - ANSWER>>The transfer of energy
from one circuit to another circuit by
electromagnetic induction
residual voltage is associated with ______. - ANSWER>>charge retained by
capacitors.
What does the acronym ESD stand for? - ANSWER>>Electrostatic Discharge
,Current amounts between ______ and _____ can be lethal. - ANSWER>>100mA,
200mA
What is the number one concern in regards to electrical safety? -
ANSWER>>Shock
Bohr's Atomic Model consists of what three components? - ANSWER>>Protons,
neutrons and electrons
Electrons are arranged in _____ around a nucleus. - ANSWER>>shells
What are three types of materials used in electronics? - ANSWER>>Conductors,
semi-conductors and insulators
In the United States there are five common classifications of fires, which are: -
ANSWER>>A, B, C, D, K.
Coulomb's Law describes the forces of attraction or repulsion between
electrical charges, which are ______________ to the product of the charges
______________ to the distance between them. - ANSWER>>directly
proportional, inversely proportional
The magnetic field that surrounds a magnet can best be described as
invisible lines of force, and are commonly referred to as: - ANSWER>>lines of
flux.
An analog multimeter (AMM) checks for: - ANSWER>>voltage, current and
resistance.
An oscilloscope with two vertical inputs, is commonly referred to as a
_______ oscilloscope. - ANSWER>>dual-trace
Voltage or potential difference is the measure of potential energy between
two points in a circuit and is commonly referred to as: - ANSWER>>voltage drop.
What components value is measured in millihenries? - ANSWER>>Inductor
, Ohm's Law characterizes the relationship between: - ANSWER>>power,
resistance, current and voltage.
A resistor has three color bands of red, brown and brown. What is the ohmic
value of this resistor? - ANSWER>>210 Ohms
Ohm's Law states that resistance is calculated by voltage divided by current.
Using Ohms law, how do you determine power? - ANSWER>>Voltage times
current
Total resistance in a series circuit equals: - ANSWER>>the sum of all the resistor
values within the circuit.
If a series circuit has three resistors valued at 10k Ohms, 15k Ohms and 20k
Ohms, with a voltage source of 15V, the total current will be_____. -
ANSWER>>333.33uA
Current in a parallel circuit is: - ANSWER>>inversely proportional to the circuits
resistance.
With three 2.5k resistors and one 3.4k resistor in parallel, the total resistance
is: - ANSWER>>669.29 Ohms
With one series 8 Ohm resistor connected to two in-parallel resistors, 20 and
30 ohms respectively, what is the total resistance (Rt)? - ANSWER>>20 Ohms
Given a battery rated at 350 ampere-hours how many hours will the battery be
able to provide 7 amperes? - ANSWER>>50
The basic properties associated with alternating voltage and current are: -
ANSWER>>frequency, period, wavelength and amplitude.
In an inductor/coil inductance varies as the _______ of the number of turns. -
ANSWER>>Square
