Today’s automation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for more information about the CCST program.

In a full-wave bridge rectifier circuit used in power supplies, as shown in the post image, which statement below is true?

a) the input current between terminals A and B is a sinusoidal AC current, and the output voltage between terminals X and Y is an inverted AC voltage
b) the output voltage between terminals A and B is an AC voltage, and the input current between terminals X and Y is a square-wave DC current
c) the output voltage between terminals A and B is a constant DC voltage, and the input current between terminals X and Y is a sinusoidal AC current
d) the input current between terminals A and B is a sinusoidal AC current, and the output voltage between terminals X and Y is a constant DC voltage
e) none of the above