Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Atree of electric networkis set of branches which is a set of branches which contains all the nodes of the network but does not form any closed path. It is similar to what anetwork topologyis to a communications network.Let us explain the tree of electric network as defined above.The above figure-1, shows an electric network with five nodes 1,2,3,4 and 5.Now, if we remove the branches 1-2, 2-3, 3-4 and 4-1 from the circuit, we will get, the graph as shown below in figure-2.The above graph as sho

Define Electrical Engineering?Electrical engineering is the branch of engineering that studies and applies electricity, electronics, and electromagnetism. Explain Quality Assurance Engineering.QA Engineering assists various software development teams with responsibilities such as application creation, application testing, implementation, and debugging, essentially being involved in the development process from start to finish. How can you tell a circuit is inductive, capacitive, or merely resis

When we talk of cut set matrix in graph theory, we generally talk of fundamental cut-set matrix. A cut-set is a minimum set of branches of a connected graph such that when removed these branches from the graph, then the graph gets separated into 2 distinct parts called sub-graphs and the cut set matrix is the matrix which is obtained by row-wise taking one cut-set at a time. The cutset matrix is denoted by symbol [Qf].Example of Cutsets Matrix of a CircuitTwo sub-graphs are obtained from a graph

Incidence matrix is that matrix which represents the graph such that with the help of that matrix we can draw a graph. This matrix can be denoted as [AC] As in every matrix, there are also rows and columns in incidence matrix [AC].The rows of the matrix [AC] represent the number of nodes and the column of the matrix [AC] represent the number of branches in the given graph. If there are ‘n’ number of rows in a given incidence matrix, that means in a graph there are ‘n’ number of nodes. Similarly,

Define Substation?A substation is a switching, transforming, or converting station located between the generating station and the low tension distribution network, typically near the consumer’s load center. Name the types of substation? Indoor substation Outdoor substation Pole mounted substation Underground substation. Define Indoor Substation?The indoor Substation is one in which the equipment is located indoors for voltages up to 11kV due to cost considerations. In the event of a contaminate

1). What is Power System?The Power system is a system that is made up of the components that are used in the Distribution, Generation, and Transmission systems. The power system serves to create electrical energy by using coal and diesel as inputs. The system is equipped with components such as a Motor, Circuit breaker, Synchronous generator, Transformer, and Conductor, among other things.2). What is meant byP-V curves? P is an abbreviation for pressure, V is an abbreviation for volumein the P-V

What are H Parameters (Hybrid Parameters?)Hybrid parameters (also known as h parameters) are known as ‘hybrid’ parameters as they use Z parameters, Y parameters, voltage ratio, and current ratios to represent the relationship between voltage and current in a two port network. H parameters are useful in describing the input-output characteristics of circuits where it is hard to measure Z or Y parameters (such as in a transistor).H parameters encapsulate all the important linear characteristics of

1). What is the use of the negative phase sequence relay?The negative sequence relays protect generators and motors from imbalanced loading that might result from phase-to-phase faults.2). What is the differential relay’s operating principle?The phasor difference of two (or)more similar electrical variables needs to exceed a specific threshold for a differential relay to activate.3). Why is distance protection selected as primary protection for thetransmission lines over overcurrent protection?F

What is Two Port Network?Atwo port networkis an electrical network model with one pair of input terminals and one pair of output terminals. It is commonly used to model the voltage and current characteristics of complex electrical networks.The figure below shows a two port network.A single phase transformer is an ideal example of two port network.When an electrical signal is applied across the input ports, there would be an electrical signal across output ports.The relation between input and out

What is a Y Parameter?Y parameters (also known as admittance parameters or short-circuit parameters) are properties used in electrical engineering to describe the electrical behavior of linear electrical networks. These Y-parameters are used in Y-matrixes (admittance matrixes) to calculate the incoming and outgoing voltages and currents of a network.Y-parameters are also known as “short-circuit impedance parameters”, as they are calculated under open-circuit conditions. That is to say that Ix=∞,