A. copper lugs
B. resistance wires
C. insulation pads
D. brazing
A. Lenz’s law
B. Ohm’s law
C. Faraday’s law of electromagnetic induction
D. none of the above
A. oscillating magnetic field
B. pulsating magnetic flux
C. relative rotation between field and armature
D. all above
A. rotary converter
B. mercury are rectifier
C. induction motor D.C. generator set
D. synchronous motor D.C. generator set
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
A. mica
B. copper
C. cast iron
D. carbon
A. external current
B. armature current
C. shunt current
D. load current