Technician A says that a constant rate spring has the same deflection rate throughout its entire range of compression. Technician B says that some coil springs have different diameters at the top and bottom of the spring. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
C
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Technician A says that aluminum on the thread of a bolt indicates that the threads in the case are damaged. Technician B says that all bolts should be checked for damage before they are reused. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Pure tungsten has ____ heat resistance and electron emission characteristic ____ all the tungsten electrodes.
A. the best, of B. a similar, to C. the same, as D. the poorest, of
A sling psychrometer can be used to determine the relative humidity by comparing:
A) The dry-bulb and wet-bulb readings. B) The psychrometer reading to a barometer reading. C) The psychrometer reading to the manufacturer's charging chart. D) The still reading and the moving reading.
In the on/off system, the output of the controller __________ as the measured value passes through the gap.
A. changes B. does not change