An oscilloscope's seconds/division switch is set on 20 ms/div. If a sine wave measures 4 divisions horizontally, what frequency is being measured?

A) 12.5 Hz B) 25 Hz
C) 50 Hz D) More information is needed.


A

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Calculate the value of Zab in the network of Fig. 9.79.

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If a machine has a faulty service brake system this will be the result:

a. the machine's brakes are overheating b. the machine will roll on a hill when the parking brakes are applied c. the machine will slow down normally d. the machine will not slow down normally

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Accident prevention requires an ongoing program, consisting of a variety of techniques

Indicate whether the statement is true or false

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An unregistered, non-purebred horse is called a:

A. hinny B. draft horse C. grade horse D. gelding

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