ANS:D - all 'a', 'b' & 'c'

The statement "all 'a', 'b' & 'c'" is correct. Load cells used for the measurement of weight typically have the following characteristics: a) Compact & rugged construction with an accuracy of 0.1 to 1%: Load cells are designed to withstand heavy loads and harsh environments while providing accurate measurements. They are constructed to be sturdy and durable, ensuring reliable performance under various conditions. b) No moving parts and incurs negligible deflection under load: Load cells usually consist of strain gauges or other sensing elements that measure the deformation or strain caused by the applied load. They do not have moving parts that could wear out or introduce errors into the measurement. Additionally, they are designed to minimize deflection under load to maintain accuracy. c) Provision of thermal compensation and is hermetically sealed: Load cells often include features such as thermal compensation to account for temperature variations that could affect the accuracy of weight measurements. They are also typically hermetically sealed to protect sensitive components from environmental factors such as moisture, dust, and corrosion, ensuring long-term reliability. Therefore, all of the options mentioned (a, b, and c) are characteristics commonly found in load cells used for weight measurement.