Answer to Question #291082 in Electrical Engineering for jay

Question

A. State Faradays law of electromagnetic induction.

B. Explain the basic operation of a generator using a suitable diagram to support your answer.

c. List Two (2) pros and cons for:

i. Compact Fluorescent Lights (CFL) ii. Light Emitting Diodes (LEDs)

Answer 1

A. The negative change of magnetic flux divided by time it took to achieve this change equals the electromotive force induced.

B. A magnet on the rotor (rotating part) creates magnetic field. This changing field creates electromotive force (voltage) in the coils:

C. Compact Fluorescent Lights (CFL):

Pros: small size, good brightness.

Cons: low efficiency, low reliability

Light Emitting Diodes (LEDs):

Pros: small size, high brightness

Cons: AC to DC conversion needed, complex technology of production.