Saudi Electricity Company Mechanical Maintenance Foreman Interview Questions and Answers

The commissioning process of a PV solar plant involves testing, adjusting, and optimizing the system to ensure it is functioning properly.

• Testing the electrical components and connections to ensure they are working correctly

• Adjusting the system settings to maximize efficiency and output

• Optimizing the performance of the solar panels to achieve the desired energy production

• Checking for any potential issues or malfunction

Transformer types of testing include routine tests, type tests, and special tests to ensure proper functioning and safety.

• Routine tests include insulation resistance, turns ratio, and polarity tests.

• Type tests are conducted on a prototype to verify design parameters like temperature rise and short-circuit withstand.

• Special tests may include impulse voltage, partial discharge, and noise level tests.

• Testing ensures trans...read more

Electricians play a crucial role in installing and maintaining solar energy systems, ensuring safety and efficiency.

• Install solar panels on rooftops or ground mounts, ensuring proper alignment and angle for maximum sunlight exposure.

• Connect solar panels to inverters, which convert DC electricity to AC electricity for home use.

• Perform electrical wiring and connections, adhering to local codes and safety standards.

• Conduc...read more

UPS is used to provide backup power in case of electrical outages or fluctuations.

• Provides continuous power supply during outages

• Protects sensitive electronic equipment from damage due to power surges or fluctuations

• Allows for safe shutdown of devices to prevent data loss

• Commonly used in data centers, hospitals, and critical infrastructure

• Types include offline, line-interactive, and online UPS

A substation is a facility used to transform voltage levels and distribute electricity to consumers.

• Substations receive high voltage electricity from power plants or transmission lines

• They transform the voltage to a lower level for distribution to homes and businesses

• Substations may also include equipment for switching, controlling, and protecting the power flow

• Examples of substations include step-down substations, dis

A relay is an electrically operated switch that uses an electromagnet to mechanically control the switching of a circuit.

• Relays are used to control high power circuits with low power signals.

• They consist of a coil, armature, and contacts.

• Common types include electromagnetic relays, solid-state relays, and reed relays.

• Examples of relay applications include automotive starter solenoids and industrial control systems.