In a Ward-Leonard circuit, if the brake is set but the motor is slipping through, what is the problematic circuit?

In a Ward-Leonard circuit, a key function is to control the speed and torque of the motor through a series of components, typically involving a generator and a motor. When the brake is set yet the motor is slipping through, it indicates that there is an issue with the ability of the circuit to maintain appropriate control under a given load.

The term "suicide circuit" refers to a configuration wherein the control system may not adequately disconnect or inhibit operation under certain failure conditions. In this context, if the motor is slipping even when the brake is applied, it points to a failure where the circuit does not prevent the motor from trying to operate against the brake's holding power. This situation implies a potential malfunction or inefficiency within the safety mechanisms of the circuit that should keep the motor from slipping when the brake is engaged.

Therefore, identifying the "suicide circuit" as the problematic aspect aligns well with the understanding that it fails to provide the necessary safety constraints, leading to the described issue of slippage despite the brake being applied.