Questions

An occluded front is a type of weather front formed in the process of cyclogenesis when a cold front is overtaken a warm front. When this happens, the warm air is separated from the cyclone center at the Earth's surface.

An occluded front likely bring much precipitation kind of weather.

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