The application calls for a sensor to detect the leading edge of plastic parts at a fixed distance about than 20 mm from the sensor location. Access from one side only is permitted. What is the best sensor to use?
A) Capacitive proximity
B) Diffused beam fixed focus photoelectric
C) Diffused beam background suppression photoelectric
D) Diffused beam shart cutoff photoelectric
E) None of the above
B
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The inverter stage in a flux vector drive allows ____.
A. control over the synthetic AC B. AC to be turned into DC current C. current to be stepped down D. voltage to be removed
An advantage of a warm-air electric furnace compared to an oil or gas furnace is:
A) Lower operating cost in most parts of the country. B) No vent pipes, chimney, or makeup air are required. C) Warmer supply air temperatures. D) Lower power requirements.
Today many PM systems are maintained through paperwork only.
Answer the following statement true (T) or false (F)