Question

Alternating current (AC) (English)

Answer 1

• AC is the abbreviation of Alternating Current.
• AC is the electromotive force that changes continuously with time.
• Magnitude of AC vary with time.
• AC have frequency of 50 Hz or 60 Hz.
• AC wave shape maybe sinusoidal (mostly), triangular, square or trapezoidal.
• AC can be generated with generator.
• AC can be converted to DC using rectifier.
• AC is not portable.
• We receive AC in our homes from electricity board.
• AC fault protection is easy.
• AC cannot be stored.
• We can step-up or step down voltage using transformer.
• AC is use for fan, lighting, heating, refrigerator, washing machine, etc.
• Two AC with different frequency cannot be interconnected directly.
• AC power can not be transmitted to very long distance. (due to stability)
• AC transmission is economical for small distance.