Maintenance Technician 2025 Complete Practice Test

When a solenoid does not generate sufficient force to actuate a device, increasing the current is an effective action to take. The force exerted by a solenoid is directly proportional to the current flowing through its coil. By increasing the electrical current, you enhance the magnetic field strength generated by the solenoid, which in turn increases the force exerted on the plunger or armature.

The solenoid's design relies on the principle of electromagnetism; therefore, the relationship between current and magnetic force is critical. If the current is raised, the electromagnetic force becomes stronger, allowing the solenoid to actuate the device as intended.

Other choices might not provide practical solutions: reducing the permeability of the core would actually weaken the magnetic field, stretching the return spring could lead to mechanical issues or further decrease the force necessary for actuation, while "none of the above" suggests there are no possible actions, which is not the case since increasing current is viable.