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| Q. |
A bridge circuit works at a frequency of 2KHz, the following can be used as detectors for detection of null conditions in the bridge: |
| A. | vibration galvanometers and headphones |
| B. | headphones and tunable amplifiers. |
| C. | vibration galvanometers and tunable amplifiers. |
| D. | vibration galvanometers, headphones and tunable amplifiers. |
| Answer» B. headphones and tunable amplifiers. | |
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