Explain how the accompanying figure demonstrates how to find the center of circle and the arc.
What will be an ideal response?
The center of the circle and arc may be easily found by measuring the vertical and horizontal center lines from the machined surfaces.
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?A steep drop in plastics production in 2008-2009 can be attributed to the ____.
A. ?World Trade Center bombing B. ?financial crisis that started in 2008 C. ?wars in Afghanistan and Iraq D. ?demand for crude oil
Air, steam, and water under pressure are all examples of _____.
a. vapors b. non-hazardous materials c. stored energy d. DC power sources
When truing a grinding wheel, it is essential to start:
A) At the low (closest to the spindle) point on the wheel B) At the highest point on the wheel C) Wherever the wheel happens to be when you set the diamond at an approximate position for dressing D) At a point about midway between high and low
What are proportional controls?
A) Proportional controls integrate the signals from several sensors and control the system operation based on the proportion of sensors requiring conditioning. B) Proportional controls increase or decrease the output of a controlled device in proportion to the level of the measured condition. C) Proportional controls regulate the starting and stopping of the system to keep the run time ratio as low as possible. D) Proportional controls have the ability to measure the controlled variable and the system output and dynamically adjust the setpoint to achieve more precise control.