In one week a work center produces 130 standard hours of work. The hours scheduled are 120, and 105 hours are actually worked. The utilization is:
A) 108.3%. B) 123.8%. C) 80.8%. D) 92.3%. E) 87.5%.
E
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____ is the darkening or lightening of a hue.
A. Contrast B. Value C. Saturation D. Brightness
Steel is a noncombustible material. So why do steel components in buildings, such as W-section beams, steel joists, and joist girders, need protection against fire?
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. An electrician must know the symbols and terms used in automatic control diagrams to be able to wire, install, troubleshoot, and maintain automatic control equipment. 2. Remote control of a controller uses contactors, relays, pushbuttons, sensors, and possibly electronics. 3. Magnetic switches used in controllers cannot be used with remote control and are expensive. 4. The manufacturing and materials-handling industries can predict maintenance with great certainty and help with failure analysis based on E stop systems. 5. SCADA connections and RTUs and HMIs are increasingly being connected through systems that uses a manufacturer-specific protocol for each component.
A spring is a mechanical device often in the form of a ____ coil that yields by expansion or contraction due to ____ applied.
A. helical; pressure B. hexagonal; force C. helical; stress D. helical; force E. a, c, and d