Very basic question which an electrical student or professional may be asked is what is electric current and electric charge. The electric current is actually the flow of electric charge from one point to other point of the conductor or wire or cable. In electric circuits this charge is often carried by moving electrons in a… Read More »
All material used at the project site shall be approved prior to the start of IP Telephony system installation works. Materials and documentation relevant to a particular section of works will be checked by the site/project engineer prior to the commencement of work ensuring that these are of the correct type as reviewed by the… Read More »
What is Circuit Breaker? Electrical circuit breaker is a switching device which can be operated manually or automatically for controlling and protection of electrical power system respectively, it is a mechanical switching device, capable of making, carrying and breaking currents under normal circuit conditions. Circuit breaker is also capable of making and carrying for a… Read More »
The purpose of this document is to specify the procedure for the various activities in the installation of 132 kV cables and fiber optic Cables. The instructions of operation and maintenance manual must be observed for whole of the process for the cable laying installation and termination. Roles & Responsibilities Project Manager: Lead all construction… Read More »
The purpose of this document is to detail the testing & commissioning procedures of the Building Management System BMS. Below is list of some necessary tools & instruments. Calibration certificates of the testing equipment will be produced during testing and commissioning. Laptop with Ethernet cross cable Multi-meter. (A valid test/calibration certificate will be available for… Read More »
Section 1: Electrical interview questions and answers about switchgear and protection What are the functions of protective relays? To detect the fault and initiate the operation of the circuit breaker to isolate the defective element from the rest of the system, thereby protecting the system from damages consequent to the fault. Give the consequences of… Read More »