Leighton Contractors Senior Engineer Interview Questions and Answers

Bus bar schemes are different ways of connecting bus bars in power systems.

• Single bus bar scheme

• Double bus bar scheme

• Main and transfer bus bar scheme

• Ring bus bar scheme

• Breaker and a half scheme

• Mesh bus bar scheme

The equipment sequence for any line bay starts with the circuit breaker and ends with the transformer.

• The circuit breaker is the first equipment in the sequence.

• Next comes the isolator switch.

• After that, the earth switch is operated.

• Then the line disconnector is opened.

• Finally, the transformer is disconnected from the line.

• The sequence is reversed when the line bay is put back into service.

P6 is a project management software used for scheduling, Float is the amount of time an activity can be delayed without delaying the project, Critical activities are tasks that must be completed on time to prevent project delays.

• P6 is a software used for project scheduling and management

• Float is the amount of time an activity can be delayed without affecting the project deadline

• Critical activities are tasks that have z...read more