A universal RLC bridge uses_________________?

A. Maxwell bridge configuration for measurement of inductance and De Santas bridge for measurement of capacitance
B. Maxwell Wein bridge for measurement of inductance and modified De Santy’s bridge for measurement of capacitance
C. Maxwell Wein bridge for measurement of inductance and Wein bridge for measurement of capacitance
D. Any of the above

Main causes of noisy solenoid are______________?

A. strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force
B. uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts
C. both of above
D. none of the above