Question 372Electricity & Electronics - QMED

The correct answer is B) reduces magnetic force on the plunger and requires more current to trip the relay. Turning the dashpot in the 'lower' direction reduces the magnetic force on the plunger of a magnetic-type overload relay. This in turn increases the setpoint current at which the relay will trip, meaning more current is required to activate the overload protection. The other options are incorrect because increasing the magnetic force (options A and C) would make the relay trip at a lower current, not higher. Reducing the magnetic force and requiring less current to trip the relay (option D) is the opposite of what turning the dashpot 'lower' would do.