Question

A generator converts :

• A. electrical energy to mechanical energy
• B. mechanical energy to electrical energy
• C. mechanical energy to solar energy
• D. solar energy to electrical energy

Hint:

Remember these common energy conversions:
{Generator:} Mechanical \(\rightarrow\) Electrical (Generates electricity)
{Motor:} Electrical \(\rightarrow\) Mechanical (Uses electricity to do work)
Solar Cell: Solar \(\rightarrow\) Electrical The question is about a "generator".

Answer 1

The Correct Option is B

Concept: A generator is a device that plays a crucial role in electricity production. Its function is based on the principle of electromagnetic induction. Step 1: Understanding the function of a generator A generator is designed to produce electrical energy. To do this, it requires an input of some other form of energy. In most common generators (like those in power plants or portable generators), this input is mechanical energy. For example, a turbine (rotated by steam, water, or wind) provides mechanical energy to turn the coils of wire within a magnetic field (or rotate magnets near coils). This relative motion between conductors and magnetic fields induces an electromotive force (voltage), which can drive an electric current. Step 2: Analyzing the energy conversions in the options
(1) electrical energy to mechanical energy: This describes the function of an {electric motor}, not a generator. Motors use electricity to produce motion.
(2) mechanical energy to electrical energy: This accurately describes the function of a {generator}. It takes mechanical input (like rotation) and converts it into electrical output.
(3) mechanical energy to solar energy: This conversion is not typical. Solar energy originates from the sun.
(4) solar energy to electrical energy: This describes the function of a {solar cell} (photovoltaic cell), not a generator in the common electromechanical sense. Step 3: Identifying the correct conversion A generator's primary role is to convert mechanical energy into electrical energy.