Module 2 Electricity Flashcards
What does this Symbol represent?
Lamp
What does this Symbol represent?
Diode
What does this Symbol represent?
Resistor
What does this Symbol represent?
Transformer
What does this Symbol represent?
Cell
What are the main components of DC Motors?
- Magnetic Field component – (Permanent or Electromagnets)
- A coil (Rotor)
- A commutator
- Brushes
- Power Supply or EMF
What is the Right Hand Slap Rule?
The fingers represent the magnetic field. The direction of the force is the direction you would move your right hand as if you were trying to slap an object.
What are the advantages of using DC motors?
- Speed control over a wide range of both above and below the rated speed. (by changing the voltage)
- High starting Torque
- Accurate steep less speed with constant torque
- Quick starting and stopping reversing and acceleration ( by reversing the current )
What is electromagnetic induction?
it is the production of an electromotive force (emf) across an electrical conductor in a changing magnetic field switching from N-S constantly.
How does a power plant get power to homes/businesses.
Power plants generate electricity by burning fossil fuels, harnessing renewable sources like solar or wind, or using nuclear energy. The electricity produced is then transmitted through high-voltage power lines to substations, where it’s converted to lower voltages for distribution through local power lines to homes and businesses.
What is a transformer?
A transformer is a machine that works using electromagnetic induction. this it allows you to increase or decrease the voltage and intensity of an electric current (alternating), but keeping the power constant.
identify the key infrastructure elements responsible for voltage transformation
Where are transformers used?
Transformers are used in a variety of applications, including power generation, transmission and distribution, lighting, audio systems, and electronic equipment.
