DEFINITIONS :

                                                                                                                                                                                         

Auto-transformer :

A transformer used to step voltage up or down. The primary and secondary wingdings share common turns,  and it provides no isolation.

ARMATURE       :    The part of an electric generator in which the voltage is induced.

Armature              :    A winding that develops current output from a generator when it turns cut a magnetic                                                   

                                   flux.

Arc                        :    Sparking that results when undesirable current flows between two points of differing  

                                   potential. This may be due to leakage through the intermediate insulation or a leakage 

                                   path due to contamination.

      

Amplitude            :    The maximum value of a wave.

Alternating Current : (AC) A current which periodically changes its direction .

Alternating Voltage   :  A voltage which periodically changes its polarity.

1.   What is electric network?

A. The interconnection of two (or) more circuit elements called as electric network.

2.  What is ohm's law ?

A. Temperature remaining constant.The potential difference across the ends of the conductor is directly proportional to the current flowing through it

        

                                    V  ∝ I or V = IR 

3. What is power?   

A. The power absorbed by the resistor is given by P = IR 

                                                                               =  I²R Watts 

4. What is conductance ?

A. The reciprocal of resistance is called as conductance units are mho .