railway DFCCIL Executive 2025 Mock Test Electrical and Electronics Measurements Indicating Instruments PMMC Instrument
In an ammeter, the deflecting torque is proportional to the current passing through it, and the instrument has full scale deflection of 75° for a current of 4.5 A. What deflection will occur for a current of 1.5 A when the instrument is spring-controlled?
1
25°
2
35°
3
40°
4
20°