This article will explains about slip frequency and induced emf in an induction motor. When three phase supply applied to stator winding of an induction motor, rotating magnetic field induced. This magnetic field rotating in a speed is called as synchronous speed.
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This article explains about effect of the rotor resistance in a slipring induction motor. Effect of the rotor resistance and reactance plays vital role to generate torque in an induction motor. Incase of standard induction motor , it is impossible to access rotor circuit from external. But Slip ring induction motor has a special type
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This article explains about more important terms used in induction motor which are synchronous speed and slip. These characteristics are popularly used. So everyone must to know about it. Let us see in details Synchronous Speed (Ns) in an induction motor When we give three phase supply to stator of a induction motor, there is
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This article written about understanding about temperature co efficient of resistance and how it behaves with conductors. When we measure electric current in a electric load during different time it may show slightly current variation to lower side, event there is a constant voltage applied in it. The load may operates at different temperature according
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Transformers MCQ is contains huge collections of multiple choices questions about Transformers, Types of transformers, Emf Equation, Transformation Ratios, Copper and Iron losses , Equivalent circuits on load and no load, Parallel operation, Voltage Regulation, Testing and maintenance of transformers, Auto transformers and special types transformers Recommended Articles About Transformers
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Reset in 8051 microcontroller is an operation to reset all operation , clears register value and set to it initialize mode.
To reset microcontroller RESET (Pin No: 9) must be active high at least two machine cycle.
Reset in 8051 microcontroller and its types, How it works? Read More »
The 8051 microcontroller has on chip oscillator circuits, which act as clock generating source for it. The output pulses of oscillator circuits are stable . So, it can be used to synchronize the operation of all circuit block inside the microcontroller and external circuits.
Clock cycle and machine cycle in microcontroller Read More »
The pin diagram of 8051 microcontroller gives information about input and output ports, interrupts, serial ports etc. about microcontroller. So, it will be useful to configure it perfectly in any kind of circuit to be build. The 8051 microcontroller has 40 pin to communicate with external machines and interfaces. Each pin has its unique functions.
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This 8051 micro controller is designed by intel company in 1980. It designed in based of Harvard architecture used in embedded system. The 8051 micro controller block diagram is shown below. This divided into various parts as various parts. Let us study in details.
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positive shunt clipping circuits is device which restricts positive wave form to flow across output devices,
Shunt Clipping Circuits Read More »
The Series clipping circuits is mostly used in electronics circuit to trim unwanted portion of signals. So that necessary magnitude of signal can be passed to further stage for processing. The clipping circuit is most necessary to clip more than desired amount of signal. Because it will safe devices from damages due to unexpected large
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This article will explain in detail about efficiency of transformer under various conditions. As we know that efficiency is most important criteria in all equipments. This efficiency determines performance of a machine. Also defines about how it is useful for practical applications Definition of efficiency Efficiency of a equipment generally said as ratio of output
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As long as study that flux induced in primary winding in linked with secondary of the transformer without any losses. But in practical scenario it is not correct. There are few amount of flux definitely leaks while linking with secondary winding. If transformer is air core, flux transfer via air medium. On other hand iron
Leakage Reactance of transformer Read More »
This article shows about, why high voltage transmission is required in transmission of electrical power. The Alternating supply generated from generating station preferably transmitted with high voltage level. Because transmission of supply with high tension supply has numerous advantages as follows
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Transmission line are neural scheme of electrical system. Because it transfer electrical energy from power stations to different locations. To transmit electrical energy suitable conductor and transmission system is necessary. This article study about classification of transmission lines basis on distance travelled by electrical energy through conductor. Because load center are not lumped at single place. It will be spread to all over area.
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