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 information about the CCST program. This question comes from the Level 1 study guide, Domain 3, Troubleshooting. Level I represents a professional who has a five-year total of education, training, and/or experience.
When the percentage of flow through a valve equals the percentage of plug movement, a valve has:
a) linear flow characteristic
b) equal percentage flow characteristic
c) quick opening flow characteristic
d) curved flow characteristic
e) none of the above