Final answer:
A broken spring in a vibrating type voltage regulator typically results in voltage regulation failure, potentially causing overvoltage or undervoltage issues.
Step-by-step explanation:
A broken spring on the vibrating type voltage regulator would normally cause a voltage regulation failure. This is because the spring is an essential component in the mechanism that controls voltage output. When the spring is intact, it helps to maintain the correct tension on the regulator contacts, allowing for precise adjustment of voltage. However, if the spring breaks, the tension is lost, which can lead to either an overvoltage or undervoltage situation. Overvoltage may cause damage to electrical components, while undervoltage could lead to insufficient electrical power being supplied to systems.