Sengar Security And Services Interview Questions and Answers

Earth is a safety wire that carries fault current to the ground, while neutral is a current-carrying wire that completes the circuit.

• Earth wire is connected to the ground to prevent electric shock

• Neutral wire carries current back to the source in a circuit

• Earth wire is usually colored green or green/yellow, while neutral wire is usually colored white or gray

The type of connection used in the primary winding of step-down transformers is delta connection.

• Delta connection is commonly used in the primary winding of step-down transformers.

• It provides a path for the flow of current in a closed loop.

• Delta connection is known for its ability to handle unbalanced loads efficiently.

• It is often used in industrial applications where the load may vary.

• Delta connection is denoted by th

Safety valve in a transformer is used to release excess pressure to prevent damage to the transformer.

• Safety valve releases excess pressure to prevent damage to the transformer

• It helps in maintaining the pressure within safe limits

• If the pressure exceeds the set limit, the safety valve opens to release the pressure

• Regular maintenance and testing of safety valves are important to ensure proper functioning