Armature reaction in a generator results in_____________?

A. demagnetisation of leading pole tip and magnetisation of trailing pole tip
B. demagnetisation of trailing pole tip and magnetisation of leading pole tip
C. damagnetising the center of all poles
D. magnetising the center of all poles

When an ideal fluid flows past a sphere________________?

A. highest intensity of pressure occurs around the circumference at right angles to flow
B. lowest pressure intensity occurs at front stagnation point
C. lowest pressure intensity occurs at rear stagnation point
D. total drag is zero