Correct option is D
Creep test: This test checks if the energy meter disc moves (or "creeps") when there is no load, ensuring that the meter does not record energy consumption when it shouldn't.
Starting test: This test ensures that the energy meter starts registering energy consumption at a very low current, typically a small percentage of the full load current.
Long period dial test: This test involves running the meter for an extended period to check its accuracy over time, ensuring consistent performance.
Braking test: This test is not typically associated with testing AC energy meters. Braking tests are more relevant in the context of motors or vehicles, where braking performance is evaluated.
Therefore, the correct option is Braking test.
