Electrical Systems 1 SACA Certification Study Guide with Complete Solutions

Electrical Systems 1 SACA Certification Study Guide with Complete Solutions Ground - Answer️️ -The connection of an electrical circuit to the Earth. Ten rules of electrical safety - Answer️️ -A set of guidelines to ensure safe practices when working with electricity. Lockout / tag out - Answer️️ -A safety procedure used to disable machinery or equipment to prevent hazardous energy release. Types of electrical current - Answer️️ -Direct current (DC) and alternating current (AC). Circuit tester - Answer️️ -A device used to test the presence of voltage in an electrical circuit. Components of an electrical circuit - Answer️️ -Power source, load, conductor, and control device. Types of power supplies - Answer️️ -DC power supply and AC power supply. Schematic symbols - Answer️️ -Visual representations of electrical components used in electrical schematics. Manual switch operators - Answer️️ -Toggle switch, push button switch, selector switch, key switch, and rotary switch. ©SOPHIABENNETT@ Monday, August 26, 2024 6:09 AM 2 Electrical output devices - Answer️️ -Lamp, motor, solenoid, buzzer, and relay. Voltage - Answer️️ -The electrical potential difference between two points in a circuit. Unit of measurement: volts (V). Voltmeter - Answer️️ -A device used to measure voltage in an electrical circuit. Voltage characteristics in series and parallel circuits - Answer️️ -In series circuits, voltage adds up. In parallel circuits, voltage is the same across all components. Current - Answer️️ -The flow of electric charge in a circuit. Unit of measurement: amperes (A). Ammeter - Answer️️ -A device used to measure current in an electrical circuit. Current characteristics in series and parallel circuits - Answer️️ -In series circuits, current is the same across all components. In parallel circuits, current adds up. Ohmmeter - Answer️️ -A device used to measure resistance in an electrical circuit. ©SOPHIABENNETT@ Monday, August 26, 2024 6:09 AM 3 Resistance characteristics in series and parallel circuits - Answer️️ -In series circuits, resistance adds up. In parallel circuits, the total resistance is less than the smallest resistance. Continuity - Answer️️ -The uninterrupted flow of current in an electrical circuit. Metric prefixes used on DMM - Answer️️ -Mega (M), kilo (K), milli (m), micro (μ). Digital multimeter (DMM) - Answer️️ -A device used to measure voltage, current, and resistance in an electrical circuit. Basic electrical units of measurement - Answer️️ -Volt (V), ampere (A), ohm (Ω). Series and parallel resistance - Answer️️ -The calculation of total resistance in series and parallel circuits. Ohm's Law - Answer️️ -A mathematical equation relating voltage, current, and resistance in an electrical circuit. Kirchhoff's Voltage Law - Answer️️ -The sum of voltage drops in a series circuit is equal to the applied voltage. Series and parallel voltage - Answer️️ -In a series circuit, the current flows through all the components in the same path. As a result, the total voltage ©SOPHIABENNETT@ Monday, August 26, 2024 6:09 AM 4 across the circuit is equal to the sum of the voltages across each of the components. In a parallel circuit, the current can flow through multiple paths. As a result, the voltage across each of the components in a parallel circuit is the same. The total current in the circuit is equal to the sum of the currents through each of the components. Power - Answer️️ -The rate at which work is done or energy is transferred in an electrical circuit. Unit of measurement: watts (W). Total power - Answer️️ -The calculation of total power in a circuit. Kirchhoff's current law - Answer️️ -The sum of currents entering a node is equal to the sum of currents leaving the node. Series and parallel current - Answer️️ -The calculation of total current in series and parallel circuits. Circuit protection - Answer️️ -Devices used to protect electrical circuits from overcurrent or short circuits. Circuit breakers - Answer️️ -Automatic switches that protect electrical circuits from overcurrent. Electrical schematics and wiring diagrams - Answer️️ -Visual representations of electrical circuits and their connections using symbols. ©SOPHIABENNETT@ Monday, August 26, 2024 6:09 AM 5 Electromagnetism - Answer️️ -The interaction between electricity and magnetism. Inductance - Answer️️ -The property of an electrical circuit that opposes changes in current. Unit of measurement: henries (H). Effect of an inductor - Answer️️ -In a DC circuit, an inductor resists changes in current. In an AC circuit, an inductor causes a phase shift between voltage and current. Total inductance and inductive reactance - Answer️️ -The calculation of total inductance and inductive reactance in series and parallel circuits. AC circuit with inductors - Answer️️ -The calculation of total load on an AC circuit with inductors. Capacitance - Answer️️ -The ability of a component to stor