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SACA C201 Electrical Systems 1 Certification
Exam 2025/2026 – Insider Study Guide with
Verified Q&A & A+ Solutions
Current ---Answers----the flow of electric charge in a circuit. Unit of measurement: amperes (a). Ammeter ---Answers----a device used to measure current in an electrical circuit. Current characteristics in series and parallel circuits --- Answers----in series circuits, current is the same across all components. In parallel circuits, current adds up. Ohmmeter ---Answers----a device used to measure resistance in an electrical circuit. Resistance characteristics in series and parallel circuits --- Answers----in series circuits, resistance adds up. In parallel circuits, the total resistance is less than the smallest resistance. Continuity ---Answers----the uninterrupted flow of current in an electrical circuit. Metric prefixes used on dmm ---Answers----mega (m), kilo (k), milli (m), micro (μ). Digital multimeter (dmm) ---Answers----a device used to measure voltage, current, and resistance in an electrical circuit.
Basic electrical units of measurement ---Answers----volt (v), ampere (a), ohm (ω). Series and parallel resistance ---Answers----the calculation of total resistance in series and parallel circuits. Ohm's law ---Answers----a mathematical equation relating voltage, current, and resistance in an electrical circuit. Kirchhoff's voltage law ---Answers----the sum of voltage drops in a series circuit is equal to the applied voltage. Series and parallel voltage ---Answers----in a series circuit, the current flows through all the components in the same path. As a result, the total voltage 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 ---Answers----the rate at which work is done or energy is transferred in an electrical circuit. Unit of measurement: watts (w). Total power ---Answers----the calculation of total power in a circuit. Kirchhoff's current law ---Answers----the sum of currents entering a node is equal to the sum of currents leaving the node.
Capacitance ---Answers----the ability of a component to store electrical energy in an electric field. Unit of measurement: farads (f). Discharging a capacitor ---Answers----the process of releasing the stored electrical energy in a capacitor. Testing a capacitor ---Answers----using a dmm to check the capacitance and integrity of a capacitor. Effect of a capacitor ---Answers----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 ---Answers----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 ---Answers----the calculation of total load on an ac circuit with capacitors. Time to charge and discharge a capacitor ---Answers----the calculation of the time required for a capacitor to charge or discharge. Functions of capacitors and inductors in an electric power supply ---Answers---capacitors store electrical energy and provide reactive power, while inductors store magnetic energy and provide reactive power.
Reactive symbols ---Answers----symbols used to represent reactive components in electrical schematics. Series-parallel circuits ---Answers----combination of series and parallel circuits in an electrical circuit. Solving a combination circuit ---Answers----the process of analyzing and calculating the values of components in a combination circuit. Variable resistors ---Answers----resistors whose resistance can be adjusted. Voltage divider network ---Answers----a circuit arrangement that divides the input voltage into smaller voltages. Troubleshooting a short circuit ---Answers----the process of identifying and fixing a circuit with a direct connection between the power source and ground. Troubleshooting an open circuit ---Answers----the process of identifying and fixing a circuit with a break or discontinuity. Operation of a transformer ---Answers----a device that transfers electrical energy between two or more circuits through electromagnetic induction. Calculating the output voltage of a transformer ---Answers---- the calculation of the voltage produced by a transformer based on the turns ratio. Troubleshooting a transformer ---Answers----the process of identifying and fixing issues with a transformer using a dmm.
Types of electrical current ---Answers----direct current (dc) and alternating current (ac). Circuit tester ---Answers----a device used to test the presence of voltage in an electrical circuit. Components of an electrical circuit ---Answers----power source, load, conductor, and control device. Types of power supplies ---Answers----dc power supply and ac power supply. Schematic symbols ---Answers----visual representations of electrical components used in electrical schematics. Manual switch operators ---Answers----toggle switch, push button switch, selector switch, key switch, and rotary switch. Electrical output devices ---Answers----lamp, motor, solenoid, buzzer, and relay. Voltage ---Answers----the electrical potential difference between two points in a circuit. Unit of measurement: volts (v). Voltmeter ---Answers----a device used to measure voltage in an electrical circuit. Voltage characteristics in series and parallel circuits --- Answers----in series circuits, voltage adds up. In parallel circuits, voltage is the same across all components.
Types of capacitors ---Answers----electrolytic capacitor, ceramic capacitor, and film capacitor.
