Page 1 of 5
Electrical Systems 1 SACA Certification ACTUAL EXAM Questions
with Correct ANSWERS GRADED A+.
In a DC circuit, a capacitor blocks DC and allows AC to pass. In an AC circuit, a capacitor causes a phase
shift between voltage and current.
Total capacitance and capacitive reactance
The formula for calculating total capacitance in series is: C_T = 1/(1/C1 + 1/C2 + ... + 1/Cn). for connected
in parallel, the total capacitance is the sum of the individual capacitances. The formula for calculating total
capacitance in parallel is:
C_T = C1 + C2 + ... + Cn
AC circuit with capacitors
The calculation of total load on an AC circuit with capacitors.
Time to charge and discharge a capacitor
The calculation of the time required for a capacitor to charge or discharge.
Functions of capacitors and inductors in an electric power supply
Capacitors store electrical energy and provide reactive power, while inductors store magnetic energy and
provide reactive power.
Reactive symbols
Symbols used to represent reactive components in electrical schematics.
Series-parallel circuits
Combination of series and parallel circuits in an electrical circuit.
Solving a combination circuit
The process of analyzing and calculating the values of components in a combination circuit.
Variable resistors
Resistors whose resistance can be adjusted.
Voltage divider network
A circuit arrangement that divides the input voltage into smaller voltages.
Troubleshooting a short circuit
The process of identifying and fixing a circuit with a direct connection between the power source and
ground.
Troubleshooting an open circuit
The process of identifying and fixing a circuit with a break or discontinuity.
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Operation of a transformer
Ground
The connection of an electrical circuit to the Earth.
Ten rules of electrical safety
A set of guidelines to ensure safe practices when working with electricity.
Lockout / tag out
A safety procedure used to disable machinery or equipment to prevent hazardous energy release.
Types of electrical current
Direct current (DC) and alternating current (AC).
Circuit tester
A device used to test the presence of voltage in an electrical circuit.
Components of an electrical circuit
Power source, load, conductor, and control device.
Types of power supplies
DC power supply and AC power supply.
Schematic symbols
Visual representations of electrical components used in electrical schematics.
Manual switch operators
Toggle switch, push button switch, selector switch, key switch, and rotary switch.
Electrical output devices
Lamp, motor, solenoid, buzzer, and relay.
Voltage
The electrical potential difference between two points in a circuit. Unit of measurement: volts (V).
Voltmeter
A device used to measure voltage in an electrical circuit.
Voltage characteristics in series and parallel circuits
In series circuits, voltage adds up. In parallel circuits, voltage is the same across all components.
Current
The flow of electric charge in a circuit. Unit of measurement: amperes (A).
Ammeter
Electrical Systems 1 SACA Certification ACTUAL EXAM Questions
with Correct ANSWERS GRADED A+.
In a DC circuit, a capacitor blocks DC and allows AC to pass. In an AC circuit, a capacitor causes a phase
shift between voltage and current.
Total capacitance and capacitive reactance
The formula for calculating total capacitance in series is: C_T = 1/(1/C1 + 1/C2 + ... + 1/Cn). for connected
in parallel, the total capacitance is the sum of the individual capacitances. The formula for calculating total
capacitance in parallel is:
C_T = C1 + C2 + ... + Cn
AC circuit with capacitors
The calculation of total load on an AC circuit with capacitors.
Time to charge and discharge a capacitor
The calculation of the time required for a capacitor to charge or discharge.
Functions of capacitors and inductors in an electric power supply
Capacitors store electrical energy and provide reactive power, while inductors store magnetic energy and
provide reactive power.
Reactive symbols
Symbols used to represent reactive components in electrical schematics.
Series-parallel circuits
Combination of series and parallel circuits in an electrical circuit.
Solving a combination circuit
The process of analyzing and calculating the values of components in a combination circuit.
Variable resistors
Resistors whose resistance can be adjusted.
Voltage divider network
A circuit arrangement that divides the input voltage into smaller voltages.
Troubleshooting a short circuit
The process of identifying and fixing a circuit with a direct connection between the power source and
ground.
Troubleshooting an open circuit
The process of identifying and fixing a circuit with a break or discontinuity.
, Page 2 of 5
Operation of a transformer
Ground
The connection of an electrical circuit to the Earth.
Ten rules of electrical safety
A set of guidelines to ensure safe practices when working with electricity.
Lockout / tag out
A safety procedure used to disable machinery or equipment to prevent hazardous energy release.
Types of electrical current
Direct current (DC) and alternating current (AC).
Circuit tester
A device used to test the presence of voltage in an electrical circuit.
Components of an electrical circuit
Power source, load, conductor, and control device.
Types of power supplies
DC power supply and AC power supply.
Schematic symbols
Visual representations of electrical components used in electrical schematics.
Manual switch operators
Toggle switch, push button switch, selector switch, key switch, and rotary switch.
Electrical output devices
Lamp, motor, solenoid, buzzer, and relay.
Voltage
The electrical potential difference between two points in a circuit. Unit of measurement: volts (V).
Voltmeter
A device used to measure voltage in an electrical circuit.
Voltage characteristics in series and parallel circuits
In series circuits, voltage adds up. In parallel circuits, voltage is the same across all components.
Current
The flow of electric charge in a circuit. Unit of measurement: amperes (A).
Ammeter
