AutoQuiz is edited by Joel Don, ISA’s social media community manager.

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 AutoQuiz20151127-pressure-gauges-for-measurementvariables. Click this link for information about the CCST program. This question is from the Level I study guide, Domain 1, Calibration. Level I represents a professional who has a five-year total of education, training, and/or experience.

All physical measurements arise from the fundamental quantities of:

a) mass, length, and time
b) density, viscosity, and specific gravity
c) flow, volume, and temperature
d) pressure, density, and specific gravity
e) none of the above


Click Here to Reveal the Answer

The scientific and engineering community widely accepts the Systeme Internationale d’Unites (SI). Its base units are length, mass, moles, time, temperature, electric current, and light intensity. The base units of the American engineering system are length (foot), mass (lbm), and time (second).

The best answer is A.

The other three answers have properties that derive from the base units of answer A.


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