10+ Manager – Electrical Interview Questions and Answers

Reflected waves are waves that bounce back after hitting a boundary. In drives, they can cause voltage spikes and affect performance.

• Reflected waves occur when a wave encounters a boundary and bounces back.

• In electrical drives, reflected waves can cause voltage spikes and affect the performance of the system.

• To simplify the impact of reflected waves in drives, measures like impedance matching and using filters can be implemented.

• Impedance matching ensures that the load impeda...read more

Power transformers are protected from hot spot failure through various measures.

• Hot spot failure in power transformers occurs when excessive heat is generated in a localized area, leading to insulation degradation and potential breakdown.

• To protect against hot spot failure, transformers are equipped with temperature monitoring devices such as thermocouples or resistance temperature detectors (RTDs).

• These temperature sensors continuously monitor the temperature of critical com...read more

Electrical Engineers in construction are responsible for designing, installing, and maintaining electrical systems in buildings and infrastructure.

• Designing electrical systems for buildings and infrastructure

• Ensuring compliance with electrical codes and regulations

• Collaborating with architects, contractors, and other engineers

• Supervising the installation of electrical systems

• Testing and troubleshooting electrical systems

• Maintaining and repairing electrical systems

• Ensuring saf...read more

Different types of motor starters include DOL, star-delta, and soft starters, each with unique working principles.

• Direct Online (DOL) starter provides full voltage to the motor at start, suitable for small motors.

• Star-delta starter initially connects the motor in star configuration for reduced starting current, then switches to delta configuration.

• Soft starters gradually increase voltage to the motor, reducing starting current and mechanical stress.

• Variable Frequency Drives (...read more

Electrical load calculation is crucial for construction works to ensure proper electrical system design and prevent overloading.

• Determine the total connected load of all electrical equipment and appliances

• Calculate the demand load based on the expected usage of the equipment and appliances

• Consider diversity factors to account for the likelihood of all equipment being used simultaneously

• Add safety factors to ensure the electrical system can handle unexpected loads

• Examples of e...read more

OLTC (On Load Tap Changer) is a device used in transformers to regulate the voltage output by changing the number of turns in the transformer winding.

• OLTC is used to adjust the voltage output of a transformer while it is in operation.

• It works by changing the tap position on the transformer winding to increase or decrease the number of turns.

• This allows for voltage regulation without interrupting the power supply.

• OLTC can be operated manually or automatically based on the requ...read more

Transformers and generator protection and relay coordination study are important aspects of electrical management.

• Transformers protection involves measures to prevent damage to transformers from overloading, short circuits, and other faults.

• Generator protection involves measures to prevent damage to generators from overloading, short circuits, and other faults.

• Relay coordination study involves analyzing the performance of protective relays in a power system to ensure that the...read more

Protection of 132 KV switchyard involves various measures to ensure safety and reliability of the electrical system.

• Installation of protective devices such as circuit breakers, relays, and fuses to detect and isolate faults

• Implementation of grounding systems to prevent electrical shock and limit fault currents

• Regular maintenance and testing of protective equipment to ensure proper functioning

• Implementation of interlocking systems to prevent unauthorized access and ensure safe...read more

My current CTC is confidential.

• I prefer not to disclose my current CTC as it is confidential information.

• I am open to discussing my expected salary for this position.

• I believe my skills and experience make me a strong candidate for this role.

• I am willing to negotiate a fair compensation package based on the responsibilities and expectations of the position.

Protection of transformer involves using various devices and techniques to prevent damage and ensure safe operation.

• Use of overcurrent protection devices such as fuses and circuit breakers to prevent excessive current flow

• Installation of differential relays to detect internal faults and isolate the transformer

• Implementation of temperature monitoring systems to prevent overheating

• Regular maintenance and testing of protective devices to ensure proper functioning

• Ground fault pro...read more