Excel Technical Services Interview Questions and Answers for Experienced

Glands are used in electrical installations to provide a secure and watertight connection between cables and equipment.

• Glands prevent the entry of dust, moisture, and other contaminants into electrical enclosures.

• They ensure the safety of the electrical system by preventing short circuits and electrical shocks.

• Glands also provide strain relief, protecting cables from damage caused by pulling or twisting.

• Examples o...read more

VCB stands for Vacuum Circuit Breaker and ACB stands for Air Circuit Breaker. Both are types of circuit breakers used in electrical systems.

• VCB uses vacuum as the arc quenching medium, while ACB uses air.

• VCB is more reliable and requires less maintenance compared to ACB.

• VCB is more suitable for medium voltage applications, while ACB is commonly used in low voltage applications.

• VCB has a faster operation time compa...read more

Mcb stands for Miniature Circuit Breaker, Rccb stands for Residual Current Circuit Breaker, and transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.

• Mcb is a type of circuit breaker that automatically switches off electrical circuits during abnormal conditions.

• Rccb is a type of circuit breaker that detects and interrupts abnormal current...read more

Equipment used in motor feeder includes circuit breakers, contactors, overload relays, and motor starters.

• Circuit breakers are used to protect the circuit from overloads and short circuits.

• Contactors are used to control the flow of electricity to the motor.

• Overload relays protect the motor from overheating by monitoring the current flow.

• Motor starters combine the functions of a contactor and overload relay to star...read more

PM of motor & feeder refers to the preventive maintenance of both the motor and feeder systems.

• Regularly inspect and clean motor components to prevent overheating and ensure proper functioning.

• Check feeder connections for any loose or damaged wires that could cause electrical issues.

• Schedule routine maintenance tasks such as lubricating moving parts and testing safety features.

• Keep detailed records of maintenance ...read more

Cable mergers are done to improve efficiency, expand service coverage, and enhance network reliability.

• Cable mergers help companies streamline operations and reduce costs.

• Merging cables allows for better utilization of resources and infrastructure.

• By combining networks, cable companies can offer a wider range of services to customers.

• Mergers also enable companies to invest in advanced technologies and infrastructu...read more