The field winding of a 110V d.c. motor has a resistance of 15 22 and a time constant of 2s. Determine the inductance and use the tangential method to draw the current/time characteristic when the supply is removed and replaced by a shorting link. From the characteristic, determine (a) the current flowing in the winding 3s after being shorted-out and (b) the time for the current to decay to 5 A.