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SACA c201 Electrical Systems
Certification
Study Guide Exam Test
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Q&A
Types of electrical current - โโโ Correct Answer > Direct current (DC) and alternating current (AC). Manual switch operators - โโโ Correct Answer > Toggle switch, push button switch, selector switch, key switch, and rotary switch. Types of power supplies - โโโ Correct Answer > DC power supply and AC power supply.
Electrical output devices - โโโ Correct Answer > Lamp, motor, solenoid, buzzer, and relay. Circuit tester - โโโ Correct Answer > A device used to test the presence of voltage in an electrical circuit. Components of an electrical circuit - โโโ Correct Answer > Power source, load, conductor, and control device. Schematic symbols - โโโ Correct Answer > Visual representations of electrical components used in electrical schematics. Voltage - โโโ Correct Answer > The electrical potential difference between two points in a
Voltmeter - โโโ Correct Answer > A device used to measure voltage in an electrical circuit. Voltage characteristics in series and parallel circuits - โโโ Correct Answer > In series circuits, voltage adds up. In parallel circuits, voltage is the same across all components. Current - โโโ Correct Answer > The flow of electric charge in a circuit. Unit of measurement: amperes (A). Ammeter - โโโ Correct Answer > A device used to measure current in an electrical circuit.
Current characteristics in series and parallel circuits - โโโ Correct Answer > In series circuits, current is the same across all components. In parallel circuits, current adds up. Ground - โโโ Correct Answer > The connection of an electrical circuit to the Earth. Ten rules of electrical safety - โโโ Correct Answer > A set of guidelines to ensure safe practices when working with electricity. Lockout / tag out - โโโ Correct Answer > A safety procedure used to disable machinery or equipment to prevent hazardous energy release.
Digital multimeter (DMM) - โโโ Correct Answer > A device used to measure voltage, current, and resistance in an electrical circuit. Basic electrical units of measurement - โโโ Correct Answer > Volt (V), ampere (A), ohm (ฮฉ). Series and parallel resistance - โโโ Correct Answer > The calculation of total resistance in series and parallel circuits. Ohm's Law - โโโ Correct Answer > A mathematical equation relating voltage, current, and resistance in an electrical circuit. Kirchhoff's Voltage Law - โโโ Correct Answer > The sum of voltage drops in a series circuit is equal to
the applied voltage.
Total power - โโโ Correct Answer > The calculation of total power in a circuit. Kirchhoff's current law - โโโ Correct Answer > The sum of currents entering a node is equal to the sum of currents leaving the node. Series and parallel current - โโโ Correct Answer > The calculation of total current in series and parallel circuits. Circuit protection - โโโ Correct Answer > Devices used to protect electrical circuits from overcurrent or short circuits. Circuit breakers - โโโ Correct Answer > Automatic switches that protect electrical circuits from
overcurrent.
Total inductance and inductive reactance - โโโ Correct Answer > The calculation of total inductance and inductive reactance in series and parallel circuits. AC circuit with inductors - โโโ Correct Answer > The calculation of total load on an AC circuit with inductors. Capacitance - โโโ Correct Answer > The ability of a component to store electrical energy in an electric field. Unit of measurement: farads (F). Types of capacitors - โโโ Correct Answer > Electrolytic capacitor, ceramic capacitor, and film capacitor.
Discharging a capacitor - โโโ Correct Answer > The process of releasing the stored electrical energy in a capacitor. Testing a capacitor - โโโ Correct Answer > Using a DMM to check the capacitance and integrity of a capacitor. Effect of a capacitor - โโโ Correct Answer > 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 - โโโ Correct Answer > The formula for calculating total capacitance in series is: C_T = 1/(1/C
- 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
C_T = C1 + C2 + ... + Cn AC circuit with capacitors - โโโ Correct Answer > The calculation of total load on an AC circuit with capacitors. Time to charge and discharge a capacitor - โโโ Correct Answer > The calculation of the time required for a capacitor to charge or discharge. Functions of capacitors and inductors in an electric power supply - โโโ Correct Answer > Capacitors store electrical energy and provide reactive power, while inductors store magnetic energy and provide reactive power. Reactive symbols - โโโ Correct Answer > Symbols used to represent reactive components in electrical schematics.
Series-parallel circuits - โโโ Correct Answer > Combination of series and parallel circuits in an electrical circuit. Solving a combination circuit - โโโ Correct Answer > The process of analyzing and calculating the values of components in a combination circuit. Variable resistors - โโโ Correct Answer > Resistors whose resistance can be adjusted. Voltage divider network - โโโ Correct Answer > A circuit arrangement that divides the input voltage into smaller voltages.
Troubleshooting a transformer - โโโ Correct Answer > The process of identifying and fixing issues with a transformer using a DMM. Sizing a transformer - โโโ Correct Answer > Determining the appropriate size of a transformer based on the voltage and load requirements. Calculating transformer power loss - โโโ Correct Answer > The calculation of power loss in a transformer due to resistance and magnetizing current. Calculating the current load - โโโ Correct Answer > The calculation of the current drawn by a load connected to a transformer.
Categories of transformers - โโโ Correct Answer > Power transformers and control transformers. Designing a control transformer circuit - โโโ Correct Answer > Creating a circuit using a control transformer to achieve a specific output voltage. Tap on the secondary of a transformer - โโโ Correct Answer > A connection point on the secondary winding of a transformer that allows for voltage adjustment.
