1-: a shunt wound motor having an armature of 80 turns and mean area 3.6×10^-2ma...

1-: a shunt wound motor having an armature of 80 turns and mean area 3.6×10^-2ma operates from 12V d.c supply and rotates in a constant magnetic field of 0.4T.when no load is attached and all fictional effects are neglected what is the rotational equilibrium speed?.
2-:an 8ohm loudspeaker is to be coupled to an audio amplifier of internal resistance 3.2kilo-ohms.if the loudspeaker is connected accriss the secondary of a transformer, determine the turn ratio and the reflected resistance In the primary circuit for maximum power transfer.?

In Physics
2 Answers Available
Asked by ameh on 20th February, 2019