railway RRB JE (CBT I + CBT II) Mock Test 2024 Sensors and Industrial Instrumentation Resistive Transducers
A structural member is compressed to produce a strain of 5 μm/m. The nickel wire strain gauge has a gauge factor of -12.1. The pre-stress resistance of the gauge is 120 Ω. The change in resistance due to compressive strain will
1
increase the resistance by 7.26 mΩ
2
decrease the resistance by 7.26 mΩ
3
increase the resistance by 49.6 mΩ
4
decrease the resistance by 49.6 mΩ