Understanding Generators, Motors, and Transformers

What type of energy do generators convert mechanical energy into?

• Chemical Energy

• Electrical Energy

• Thermal Energy

• Nuclear Energy

What is the primary function of an electric motor?

• To convert electrical energy into mechanical energy

• To convert mechanical energy into electrical energy

• To transfer electrical energy from one circuit to another without changing its frequency

• To convert thermal energy into electrical energy

What does a transformer primarily do?

• Converts mechanical energy into electrical energy

• Converts electrical energy into mechanical energy

• Changes the voltage of an electrical power supply

• Stores electrical energy for later use

Which of the following best describes a generator?

• A device that uses electromagnetic induction to convert electrical energy into mechanical energy

• A device that uses electromagnetic induction to convert mechanical energy into electrical energy

• A device that changes the voltage of electricity without changing its form

• A device that stores electrical energy in a magnetic field

Which component is NOT typically found in a motor?

• Rotor

• Stator

• Commutator

• Transformer coil

What is the main characteristic of a transformer?

• It can operate only on DC power

• It can increase or decrease AC voltage

• It converts AC to DC

• It generates mechanical energy

Which of the following is a use of motors?

• Generating electricity for a power grid

• Driving the compressor in a refrigerator

• Increasing the voltage of electricity for long-distance transmission

• Converting high-voltage electricity into low-voltage electricity

What principle do transformers operate on?

• Piezoelectric effect

• Electromagnetic induction

• Thermoelectric effect

• Photoelectric effect

Which of the following statements is true about generators?

• They can only operate with AC power

• They are primarily used to increase the voltage of electricity

• They convert mechanical energy into electrical energy

• They are used to store electrical energy

What is the primary difference between a motor and a generator in terms of energy conversion?

• A motor converts electrical energy into mechanical energy, while a generator does the opposite

• A motor converts mechanical energy into electrical energy, while a generator does the opposite

• There is no significant difference; both can perform the same functions

• A motor increases the voltage of electricity, while a generator decreases it