What is the duty cycle of a digital pulse train where the pulse width is 10 ms and the period of the waveform is 90 ms?
A) 90% B) 10% C) 11.1% D) 9%
C
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_____ can minimize misunderstanding business communications
A) Digital billing payment programs B) Cell phones C) ?High speed networks D) Personal connection
The permanent magnetic DC motor acquires its magnetic field from a permanent magnetic and an electromagnetic
Indicate whether the statement is true or false
After shutdown of a centrifugal chiller is initiated, the compressor, chilled-water pump, and oil pump stop
but the tower fans continue to run. The most likely reason is the _____. a. stop-to-start timer is activated b. compressor start relay is energized c. condenser water temperature remains high d. recycle shutdown mode has been activated
The two basic methods used to trim windows are _____
a. new style and standard b. picture frame and new style c. conventional and new style d. conventional and picture frame