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Electrical and Electronic Knowledge Flashcards

6 cards from real IST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Electrical and Electronic Knowledge flashcards as text

  1. What is the purpose of a PLC (Programmable Logic Controller) in an industrial setting?

    Answer: To automate and control industrial machinery and processes

    PLCs are industrial computers used to automate machinery and processes based on programmed logic and sensor inputs.

  2. Which color wire is typically used for the hot (live) conductor in US standard wiring?

    Answer: Black or red

    Black and red wires are used for hot (live) conductors in US electrical wiring standards.

  3. What does 'GFCI' stand for and what does it protect against?

    Answer: Ground Fault Circuit Interrupter — protects against ground fault shock

    GFCI stands for Ground Fault Circuit Interrupter and protects people from electric shock caused by ground faults.

  4. What unit is used to measure electrical power?

    Answer: Watt

    Electrical power is measured in Watts, calculated as Voltage multiplied by Current (P = V × I).

  5. A 120V outlet is connected to a 1,200W appliance. What current does it draw?

    Answer: 10 A

    Current = Power ÷ Voltage = 1,200W ÷ 120V = 10 Amps.

  6. What is the primary safety reason for using lockout/tagout before working on electrical equipment?

    Answer: To prevent unexpected energization that could cause electrocution

    LOTO prevents unexpected energization of electrical equipment, protecting workers from electrocution during maintenance.

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