Final answer:
The brakes will not release.
Step-by-step explanation:
After a brake application, if the brake valve is placed in electric holding when the electric brake is not cut in, the result will be that the brakes will not release.
When the brake valve is placed in electric holding, it keeps the brake shoes in contact with the brake drum or disc, preventing the release of the brakes. This is done to ensure the vehicle remains stationary in situations where the electric brake is not engaged.
Without the release of the brakes, they can become overheated and malfunction, potentially causing damage to the brake system.