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Showing posts from July, 2023

Significance of Rotor Power Factor

What is Rotor Power Factor? The power factor is a fundamental concept in electrical engineering that describes the relationship between real power (kW) and apparent power (kVA) in an electrical system. It is defined as the cosine of the angle between the voltage and current waveforms in an AC circuit. The power factor is represented by the symbol "pf." Similarly, the rotor power factor refers specifically to the power factor of the rotor in an induction motor. Unlike the stator power factor, which remains almost constant at a value close to unity for most loads, the rotor power factor can vary depending on the motor's operating conditions. Role of Rotor Power Factor in Induction Motors: The induction motor's rotor power factor plays a crucial role in determining the motor's efficiency, torque production, and overall performance. It directly affects the power losses in the motor and the amount of slip. 1. Efficiency: Efficiency is a vital aspect of any motor. It ...

The idea of floating bearing or non locating bearing

Floating bearings, also known as self-aligning bearings or non-locating bearings, are used in various applications where there is a need for rotational freedom or axial movement between two machine components. These bearings are designed to accommodate misalignments and thermal expansion, making them suitable for specific scenarios. Here are some situations where floating bearings are commonly used: 1. Thermal Expansion: In machines and equipment that experience significant temperature variations during operation, such as in large industrial processes or power generation facilities, thermal expansion can occur. Floating bearings allow for axial movement and thermal expansion, preventing excessive stress on the bearings and other machine components. 2. Shaft Misalignment: Floating bearings are often used when there are inherent misalignments between the shaft and the housing due to manufacturing tolerances or operating conditions. These misalignments can lead to increased bearing wear...