When selecting the proper PLC module, which of the following specifications needs to be considered?
A. type of current
B. voltage level
C. number of terminals needed
D. active-low or high
E. all of the above
Answer: E
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Where parallelism is applied to a planar surface, the tolerance zone is parallel to the primary ____________________ plane.
Fill in the blank(s) with the appropriate word(s).
Use the table in the accompanying figure to find the pitch given a working depth of 0.0368 inches. Round to the nearest thousandth.
A. 52.113 B. 54.832 C. 53.273 D. 54.348
The efficiency of a Carnot cycle operation between the same temperature limits as the diesel cycle above is nearest:
The pressure and temperature at the inlet to an ideal diesel cycle, with P-v diagram shown, are 100 kPa and 10ºC. It has a compression ratio of 18 and a cut-off ratio of 2. The maximum temperature in the cycle is 1400ºC. Assume constant
specific heats from Table below for all calculations.
A) 87%
B) 85%
C) 83%
D) 81%
Why is it dangerous to drill out orifices in metering devices?
A) The metal is too soft to drill through. B) The orifices are conical in shape. C) The metal is too hard to drill through. D) The orifices are rectangular in shape.