To take-care the change in frequency of AC current, while using moving iron type instruments,
A. an induction coil is used
B. a condenser of suitable value is used in series with the swamp resistance
C. a condenser of suitable value is used in parallel with the swamp resistance
D. a balancing circuit is provided.
Answer:C
To take-care the change in frequency of AC current, while using moving iron type instruments,
A. an induction coil is used B. a condenser of suitable value is used in series with the swamp resistance C. a condenser of suitable value is used in parallel with the swamp resistance D. a balancing circuit is provided.