ATT FC COMP TEST EXAM (UPDATED 2025) QUESTIONS
& ANSWERS | LATEST ALREADY GRADED A+ |
COMPLETE STUDY GUIDE WITH 100% ACCURATE
QUESTIONS &ANSWERS. EXCELLENCE GUARANTEED.
What three factors determine the severity of an electric shock? Answer: 1) Amount of
current flowing through the body, 2) Path of current through the body, 3) Length of time
the body is in the circuit
How much current can be lethal? Answer: 50-150 milliamperes
How much more DC than AC does it take to freeze a body to a conductor? Answer: 5
times: 12 ma AC, 60 ma DC
What are three types of burns? Answer: 1) Electrical, 2) Arc, 3) Thermal Contact
What are three well-known examples of electrical protection devices Answer: 1) Fuse,
2) Circuit Breakers, 3) Ground-Fault Circuit Interrupters (GFCIs)
Never use ____ or ____ to extinguish an electrical fire because they are electrically
conductive substances. Answer: water, foam
What are the 4 steps that should be taken in the case of an electrical fire? Answer: 1)
de-energize, 2) call the fire department, 3) control / put out the fire, 4) report fire
Schematic diagrams are drawn so that the date or signal flows through the circuit from
____ to ____. Answer: left, right
What are the two methods to troubleshoot a circuit? Answer: 1) trial and error, 2) logical
procedure
What are the four steps to troubleshooting a circuit? Answer: 1) Analyze the circuit, 2)
Check the setup, 3) Calculate and measure values, 4) Check the results.
What are three characteristics of an open? Answer: 1) infinite resistance, 2) no circuit
current, 3) measure applied voltage
What are three characteristics of a short? Answer: 1) no resistance, 2) increases circuit
current, 3) measures 0 voltage
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, What are the three characteristics of a changed value? Answer: 1) resistance
increases or decreases, 2) increases or decreases circuit current, 3) measures voltage
other than calculated
What is a representation of AC voltage or current? Answer: The sine wave
____ is determined by the number of cycles that occur in one second. Answer:
Frequency
What is the basic unit of measurement for frequency? Answer: the Hertz (Hz)
____ is the length of time required to complete one cycle of an AC sine wave. Answer:
Period
The symbol for period is ____? Answer: T
Time is expressed as a ____. Answer: decimal part of a second
The formula for period is ____. Answer: T = 1 / f
____ is the distance from beginning to end of one complete cycle of an AC sine wave.
Answer: Wavelength
The symbol for wavelength is ____. Answer: λ (lambda)
Wavelength is expressed in ____ or ____. Answer: meters or centimeters
The formula for wavelength is ____. Answer: λ = 300 x 10^6 / f - where f is Hertz
A changed value component changes ____ and ____. Answer: ZT, IT
A ____ eliminates the component from the circuit. Answer: short
The purpose of a transformer is to ____. Answer: transfer power
For transformers power in ___ power out. Answer: always equals
The transformer schematic symbol uses two ____. Answer: inductor symbols
What is the reference designator for a transformer? Answer: T
In a transformer, the ____ receives the input voltage. Answer: primary coil
In a transformer, the secondary coil receives the ____. Answer: induced voltage
Transformers operate on the principle of ____. Answer: mutual inductance
____ transformers increase the applied voltage. Answer: Step-up
____ transformers decrease the applied voltage. Answer: Step-down
What is the turns ratio formula? Answer: NP / NS - where N means number of coils
What is the formula for the secondary voltage in a transformer? Answer: VP / VS = NP
/ NS
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
& ANSWERS | LATEST ALREADY GRADED A+ |
COMPLETE STUDY GUIDE WITH 100% ACCURATE
QUESTIONS &ANSWERS. EXCELLENCE GUARANTEED.
What three factors determine the severity of an electric shock? Answer: 1) Amount of
current flowing through the body, 2) Path of current through the body, 3) Length of time
the body is in the circuit
How much current can be lethal? Answer: 50-150 milliamperes
How much more DC than AC does it take to freeze a body to a conductor? Answer: 5
times: 12 ma AC, 60 ma DC
What are three types of burns? Answer: 1) Electrical, 2) Arc, 3) Thermal Contact
What are three well-known examples of electrical protection devices Answer: 1) Fuse,
2) Circuit Breakers, 3) Ground-Fault Circuit Interrupters (GFCIs)
Never use ____ or ____ to extinguish an electrical fire because they are electrically
conductive substances. Answer: water, foam
What are the 4 steps that should be taken in the case of an electrical fire? Answer: 1)
de-energize, 2) call the fire department, 3) control / put out the fire, 4) report fire
Schematic diagrams are drawn so that the date or signal flows through the circuit from
____ to ____. Answer: left, right
What are the two methods to troubleshoot a circuit? Answer: 1) trial and error, 2) logical
procedure
What are the four steps to troubleshooting a circuit? Answer: 1) Analyze the circuit, 2)
Check the setup, 3) Calculate and measure values, 4) Check the results.
What are three characteristics of an open? Answer: 1) infinite resistance, 2) no circuit
current, 3) measure applied voltage
What are three characteristics of a short? Answer: 1) no resistance, 2) increases circuit
current, 3) measures 0 voltage
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, What are the three characteristics of a changed value? Answer: 1) resistance
increases or decreases, 2) increases or decreases circuit current, 3) measures voltage
other than calculated
What is a representation of AC voltage or current? Answer: The sine wave
____ is determined by the number of cycles that occur in one second. Answer:
Frequency
What is the basic unit of measurement for frequency? Answer: the Hertz (Hz)
____ is the length of time required to complete one cycle of an AC sine wave. Answer:
Period
The symbol for period is ____? Answer: T
Time is expressed as a ____. Answer: decimal part of a second
The formula for period is ____. Answer: T = 1 / f
____ is the distance from beginning to end of one complete cycle of an AC sine wave.
Answer: Wavelength
The symbol for wavelength is ____. Answer: λ (lambda)
Wavelength is expressed in ____ or ____. Answer: meters or centimeters
The formula for wavelength is ____. Answer: λ = 300 x 10^6 / f - where f is Hertz
A changed value component changes ____ and ____. Answer: ZT, IT
A ____ eliminates the component from the circuit. Answer: short
The purpose of a transformer is to ____. Answer: transfer power
For transformers power in ___ power out. Answer: always equals
The transformer schematic symbol uses two ____. Answer: inductor symbols
What is the reference designator for a transformer? Answer: T
In a transformer, the ____ receives the input voltage. Answer: primary coil
In a transformer, the secondary coil receives the ____. Answer: induced voltage
Transformers operate on the principle of ____. Answer: mutual inductance
____ transformers increase the applied voltage. Answer: Step-up
____ transformers decrease the applied voltage. Answer: Step-down
What is the turns ratio formula? Answer: NP / NS - where N means number of coils
What is the formula for the secondary voltage in a transformer? Answer: VP / VS = NP
/ NS
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
