AC FUNDAMENTALS

1. ALTERNATIVE VOLTAGE :-A voltage that changes its polarity and magnitude at regular intervals of time is called an advertisement voltage

 2. SINUSOIDAL ALTERNATIVE QUANTITY-- An alternative quantity which varies according to sine of angle wt is known as sinusoidal alternative quantity

 3. GENERATION OF ALTERNATIVE VOLTAGE AND CURRENT-- An alternative voltage can be generated either
a)by rotating a coil in a uniform magnetic field at constant speed
b)by rotating a uniform magnetic field within a stationary coil at a constant speed.


4. Equation of alternative EMF and CURRENT









5. IMPORTANT TERMS--
a) waveform
b) instantaneous value
c) cycle
d) Alternation
e) Time period
f) Frequency
g) Amplitude

6. IMPORTANT RELATIONS--
a) Relation between frequency and time period
b) Realtion between frequency and angular velocity

 7. Different forms of alternative voltage equation

 8. Values of alternative voltage and current

 9. Peak value-- The maximum value attained by an alternative quantity during one cycle is called its peak value

DEFINATION OF RETAILING AND FUNCTION OF RETAILERS

 Retailing is the set of business valuesthat add values to the products and services sold to customer for their personal and family use

Functions performed by retailors:-
1. Providing as assortment of products and services
2. Breaking Bulk
3. Holiding inventories
4. Providing services