Q. A bridge circuit works at a frequency of 2KHz, the following can be used asdetectors for detection of null conditions in the bridge: (Solved)
1. vibration galvanometers and headphones
2. headphones and tunable amplifiers.
3. vibration galvanometers and tunable amplifiers.
4. vibration galvanometers, headphones and tunable amplifiers.
- b. headphones and tunable amplifiers.