Preview Questions Electrical Technician | Role Specific Skill

Question 1: How do you troubleshoot a circuit that has a constant high voltage reading but fails to supply current?

Which action should you take?

Choose only one option

Verify that the power supply is not overvolting and damaging the circuit

Check the load for resistance to current flow or malfunctioning components

Check the circuit breaker settings to ensure the load is within the safe limits

Inspect the grounding system for voltage leakage

Question 2: When installing a PLC (Programmable Logic Controller), what must be ensured during wiring and configuration?

Which action should you take?

Choose only one option

The PLC is installed near the control panel for better access

The PLC programming is completed before installation begins

Properly wired inputs and outputs, and the correct voltage ratings for the system

The PLC is connected to all devices in the system using a dedicated ground wire

Question 3: How do you identify grounding issues during electrical maintenance of a distribution system?

Which action should you take?

Choose only one option

Use a clamp meter to check for any stray current on the ground system

Visually inspect grounding connections for corrosion and loose parts

Measure the ground resistance to ensure it is within the acceptable range

Compare the system's voltage to ground potential at various points and look for discrepancies

Question 4: If a transformer's secondary voltage drops when a load is applied, what is the most probable cause?

Which action should you take?

Choose only one option

Short in the secondary winding

Open primary winding

Incorrect transformer rating

Load exceeding the transformer capacity

Question 5: What is the first step when installing a new electrical panel?

Which action should you take?

Choose only one option

Verify the panel is correctly labeled for the electrical system

Ensure proper grounding and verify the circuit breaker ratings

Check the overall layout of the panel to ensure it aligns with the schematic

Inspect the wiring for signs of wear before installation

Question 6: What is the best tool to locate a ground fault in a system?

Which action should you take?

Choose only one option

Multimeter

Clamp meter

Voltage tester

Megger (Insulation Tester)