Frequency
If the loop is rotated at the speed of 2 revolutions each second, the resultant EMF will complete 2 cycles each second. The number of cycles each second is referred to as frequency.
The symbol for frequency is ( f ). It is measured in cycles per second ( CPS ) or more commonly Hertz ( Hz ). The time in which one cycle is completed is known as the periodic time. A frequency of 50 Hz is the standard for the supply system in Ireland.
The frequency of a supply can be calculated as follows:
Example 1
An alternating voltage waveform has a periodic time of 4 mS. Calculate the frequency of the supply?
Solution
Related posts:
Chapter 3
Synchronous Motor Operation
AUDIO ELECTRONICS:CLOSED-CIRCUIT TV
Introduction to The Choice and Comparison of Servo Motors:
Industrial control systems:Definition and functions
Introduction in Troubleshooting AC motors and starters
Speed control of d.c. Motors:Electronic Speed Control Method for DC Motors
FUNDAMENTALS OF ELECTRIC SYSTEMS:INDUCTANCE
How Engines Work part1
INTRODUCTION TO CONVENTIONAL D.C. MOTORS
Electric Motor Manual – INSTALLATION METHODS – Cycling of motors for energy conservation
The Dual-Voltage Nine-Lead Motor's Internal Connections
Timing relays:Clock Timers
Fuel System – Carburetor Service (part2)