1. What will happen if the armature rheostat is not in
maximum position while starting
2. What will happen if the armature resistance is in minimum
position and the eld
resistance is in maximum position while starting the motor?
3. How do you reverse the direction of rotation of a DC motor?
4. If the armature connection and the eld connection both
are reversed, does the direction
of rotation of the motor reverse?
length l and width b is given for a rectangle.and the
perimeter of a rectangle is denoted by p.another rectangle
length is 2l and width is 3b and the perimeter of a
rectangle is p1.find the ratio between those two perimeters?