Final answer:
The correct answer is to add the difference between the actual and desired stub lengths to the take-up when there is a discrepancy due to bender wear. This compensation ensures accurate bends in conduit work.
Step-by-step explanation:
The correct answer is option a. added to the take-up. When you bend a conduit using a bending tool, 'take-up' is the amount of conduit length that will be absorbed in the bend. If the actual stub length is shorter than what is needed due to bender wear or any other inaccuracy, you need to compensate for this during your next bend.
To adjust for the lesser stub, you add the difference between the actual and the desired stub lengths to the take-up measurement for the next bend. This allows for consistent and accurate bends in cases where equipment wear has caused deviations from the expected bending results.
Remember, disregarding the difference (option b) would lead to repeated inaccuracies, multiplying by 2 (option c) does not make sense in this scenario, and subtracting from the take-up (option d) will exacerbate the error, giving you even shorter stubs on subsequent bends.
If the actual stub length is less than the desired stub length due to bender wear, the difference between the two stub lengths is subtracted from the take-up. Take-up is the length of material that is required to form the stub on a bent pipe.
For example, if the desired stub length is 4 inches and the actual stub length due to bender wear is 3 inches, the difference of 1 inch is subtracted from the take-up.