Technician A says that crossovers are used to block certain frequencies to allow each type of speaker to perform its job better. Technician B says that a high-pass filter is used to block high-frequency sounds being sent to large woofer speakers, and a low-pass filter blocks low-frequency sounds being sent to tweeters. Who is right?

A) Technician A only B) Technician B only
C) Both technicians A and B D) Neither technician A nor B


A

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The kindling temperature of iron is ____.

A. 600 degrees Fahrenheit B. 1000 degrees Fahrenheit C. 1200 degrees Fahrenheit D. 1600 degrees Fahrenheit

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When the pressure in a caliper is released, the piston is moved back in the cylinder by ________

A) Spring pressure B) The opening of the vent port C) The action of the piston seal D) The leverage of the caliper arms

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Describe the basic characteristics of Free Space Optics.

What will be an ideal response?

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The systems represented by these block diagrams can each be described by a differential equation of the form,


For each system what is the value of N ? For each system what are the a coefficients, starting with an and going down to a0 ? In system (b), what range of values of A will make the system stable?

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