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Assignment sample solution of EE1011 - Basic Electrical Engineering

Q.1 Explain Ohm's Law and its significance in electrical engineering.

Q.2 Describe the role of Kirchhoff's Voltage and Current Laws in circuit analysis.

Q.3 What are the advantages of using AC over DC for power transmission?

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Electrical Engineering Assignment Sample

Q1:

Answer :

Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, provided the temperature remains constant. Mathematically, it is expressed as, where is the voltage, is the current, and is the resistance.

This law is fundamental in electrical engineering as it forms the basis for analyzing electrical circuits. It helps engineers calculate the required values of current, resistance, and voltage in designing and troubleshooting electrical systems. Applications include resistor sizing, circuit protection, and power management in devices.

Q1:

Answer :

Kirchhoff's Voltage Law (KVL) states that the sum of all electrical potential differences around a closed loop in a circuit is zero. Kirchhoff's Current Law (KCL) states that the total current entering a junction equals the total current leaving the junction.

These laws are pivotal for circuit analysis, enabling engineers to solve complex circuits systematically. They are used in determining unknown currents, voltages, and resistances in electrical networks and designing balanced power distribution systems.

Q1:

Answer :

AC is preferred for power transmission due to its efficiency over long distances. It can be easily transformed to higher voltages, reducing current and minimizing losses in transmission lines. AC systems are cost-effective as they use lighter conductors and require simpler insulation.

Additionally, AC enables the operation of three-phase systems, which are more efficient for industrial use. Its ability to power motors and devices directly also makes it versatile for various applications.