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

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The permanent magnetic DC motor acquires its magnetic field from a permanent magnetic and an electromagnetic

Indicate whether the statement is true or false

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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

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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

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