A dynamo converts

The correct answer is Mechanical energy into electric energy.

Explanation:

• A dynamo is a device or generator that converts mechanical energy into electrical energy.
• It used rotating coils of wire and magnetic fields to convert mechanical rotations into a pulsing direct electric current.
• Dynamos were the first electrical generators capable of supplying power to industries, and many other electric-power conversion devices were based upon the principle of dynamo.
• This principle is fundamental in various devices like generators, alternators, and dynamos, which are crucial components in producing electricity for numerous applications, from power generation in power plants to providing electricity in portable devices and vehicles.

Thus, A dynamo converts mechanical energy into electric energy.