Questions

The term market in economics refers to the place or arrangement where the buyers and sellers come to contact directly or indirectly for buying and selling goods. Market refers to not a specific or particular place it is the place for commodities..

D.C series motor both armature and feild connected in series at noload condition current drawn by the motor is zero Ia=0 flux also zero. but very small amount of flux avalible because of residual magnetism

in series motor speed  =  N α Eb/Φ Eb almost conistant

                                 =    N α 1/Φ

At no load condition d.c series can be run as dangerously very high so d.c series motor
operated at load condition only