These motors work on the principle of electromagnetic induction which is the branch of electromagnetism.

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A good example of this is the way power is generated, such as at a hydro-electric power plant.

Required fields are marked *. What do you mean by Thermal conductivity? According to the power supply. Best Robot Dog Toys If a changing current is passed through a coil, a changing magnetic field will be produced, inducing an emf in the coil.

applications for electromagnetic waves EM waves accomplish the transmission of energy through a vacuum or using no medium. The interaction of the signals and the electromagnetic pulses, make the telephones and mobiles very handy. Your IP: 68.66.224.22 This is the modern technology of transportation systems that use the concept of electromagnetism.
Single-phase induction motor. Capacitor starts motor.

One way to use it is in a transformer, which we'll discuss below. The number keys are stored in the magnetic tape on the back of the card, interacts with the magnetic card reader in the door.
An electromagnetic spectrum consists of different range of all possible wavelength or frequencies of electromagnetic radiation. This emf, known as the back emf, acts against the applied voltage that's causing the motor to spin in the first place, and reduces the current flowing through the coils. Here's What You Need to Know, 4 Most Common HVAC Issues & How to Fix Them, Fluid Mechanics & How it Relates to Mechanical Engineering, Hobbyist & DIY Electronic Devices & Circuits, Naval Architecture & Ship Design for Marine Engineers. Actuators are the final control elements which drives the load at specific conditions. If the primary coil sets up a changing flux, the voltage in the secondary coil depends on the number of turns in the secondary: Similarly, the relationship for the primary coil is: Combining these gives the relationship between the primary and secondary voltage: Energy (or, equivalently, power) has to be conserved, so: If a transformer takes a high primary voltage and converts it to a low secondary voltage, the current in the secondary will be higher than that in the primary to compensate (and vice versa).

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Examples of equipment or situations based on electromagnetism are given below: The electromagnetism is concerned with describing the physical phenomena macroscopic in which electric charges are involved, both at rest and in motion.

A transformer in which the secondary has more turns (and, therefore, higher voltage) is known as a step-up transformer. When the data stored on the card and the memory matches, the door opens. When the device is used as a motor, a current is passed through the coil. When the flux generated by one coil changes (as it does continually if the coil is connected to an AC power source), the flux passing through the other will change, inducing a voltage in the second coil.




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