Subtopic: Measurement of force, stress, torque, speed, displacement and acceleration on machine elements – shafts, couplings, keys, bearings and knuckle joints
Question Statement:
In agricultural implement draft measurement, an extended octagonal ring transducer (EORT) is widely preferred because:
Options:
(A) It can independently measure horizontal force, vertical force, and moment with minimal cross-sensitivity
(B) It requires zero calibration
(C) It is made of cast iron
(D) It only measures torque
Answer Key:
A
Step-by-Step Solution & Explanation
EORT strain gauge dynamometers have nodal points where strain due to normal force is zero while shear force is maximum, enabling orthogonal force decoupling.