Question 106Electricity & Electronics - 1st Asst/Chief

The correct answer is C) -5.0 VDC. This is because the question states that left rudder order signals are negative in polarity, and a rudder order of 20 degrees left rudder would correspond to a negative voltage output to the rudder servo amplifier. The illustrated functional block diagram and system interface signals table indicate that the full-scale rudder order signal range is -5.0 VDC to +5.0 VDC, corresponding to full-scale left and right rudder orders, respectively. Therefore, a 20 degree left rudder order would result in an output voltage of -5.0 VDC to the rudder servo amplifier. The other answer choices are incorrect because A) -2.25 VDC would correspond to a smaller left rudder order, B) -4.0 VDC is not the full-scale left rudder order signal, and D) +5.0 VDC would correspond to a right rudder order, which is the opposite of what is specified in the question.