Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT II: Magnetic Circuits And Electrical Installations
A simple magnetic circuit is made up of a single magnetic material. But a composite magnetic circuit will have minimum of two different materials offering different magnetic properties.
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT II: Magnetic Circuits And Electrical Installations
The closed path followed by magnetic flux is called a magnetic circuit. In a magnetic circuit, the magnetic lines of force leave the north pole pass through the entire circuit and return to the starting point.
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
Electrical Circuits: UNIT I: Dc Circuits: Two Marks Questions And Answers
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
Electrical Circuits: UNIT I: Dc Circuits: Examples
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
Trying to represent a practical power system where a lot of interconnections between several generating stations involving a large number of transformers using three lines corresponding to R, Y and B phase will become unnecessary clumsy and complicated.
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
Before taking up the examples, the formula for Delta (∆)-Star(Y) conversion and also Star-Delta conversion, using impedances as needed, instead of resistance as elements.
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
Limitation of this method is that it cannot be applied on unbalanced load. So under this condition we have I1 – I2,- I3= I and V1=V2=V3=V. Diagram is shown below:
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
The voltage measured between any phase and neutral point is called as phase voltage The current passing through any branch of the three phase load is called phase current.
Line Voltage and Line Current
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
In single phase system two wires are sufficient for transmitting voltage to the load. i.e., phase and neutral. But in three phase system, two ends of each phase are available to supply voltage to the load.
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
A single phase ac voltage can be generated by rotating a turn made up of two conductors, in a magnetic field. Such as ac producing machine is called single turn alternator. But voltage produced by a single turn is very less and not sufficient for practical loads.
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
The circuit shows the three impedance Z1, Z2 and Z3 in parallel with the supply.
Introduction
Subject and UNIT: Basic Electrical, Electronics And Instrumentation Engineering: UNIT I: Electrical Circuits
The resistance, inductance and capacitance are three basic elements of any electrical network. In order to analyze any electric circuit, it is necessary to understand the following three cases.