MCQ Detailed View

A generator is a device that converts mechanical energy into electrical energy. This process is based on the principle of electromagnetic induction, discovered by Michael Faraday in 1831. According to this principle, when a conductor (like a coil of wire) moves through a magnetic field, it generates an electric current.

Generators are commonly used in power stations, wind turbines, and backup power systems. In all these cases, mechanical energy—produced by water turbines, steam engines, or wind blades—is used to rotate a coil or magnetic field inside the generator. This motion causes electricity to flow through wires connected to the generator.

Let’s examine why the other options are incorrect:

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  Motor: A motor does the opposite of a generator. It converts electrical energy into mechanical energy to run machines like fans, pumps, or appliances.

  
  


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  Transformer: A transformer is used to increase or decrease the voltage of electricity. It does not create electricity; it only modifies its level for efficient transmission.

  
  


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  Coil: A coil is a component used inside many electrical devices, including motors and generators. By itself, a coil doesn’t generate electricity unless it’s part of a generator system.

  
  

In summary, a generator is the key device that takes in mechanical energy—like the rotation of a turbine—and outputs electrical energy used to power homes, factories, and cities. This makes generators essential in energy production systems worldwide.

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