A(n) ________ gain device allows two subscribers to share the same line and helps to reduce the number of cable pairs needed to feed subscribers from a central office
Fill in the blank(s) with correct word
pair
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Consider a house in Atlanta, Georgia, that is maintained at 22°C and has a total of 20 m2 of window area. The windows are double-door type with wood frames and metal spacers and have a U-factor of 2.5?W/m2•K (see Prob. 1–120 for the definition of U-factor). The winter average temperature of Atlanta is 11.3°C. Determine the average rate of heat loss through the windows in winter.
What will be an ideal response?
Which of the following is one of the original and still most widely used applications for waveguide?
A. FM broadcasting B. Radar installations C. Transmission lines D. AM broadcasting
The two most common types of overcurrent protective devices are _____
A) circuit breakers and fuses B) safety switches and load centers C) heaters and blowers D) Edison-base fuses and time-delay devices
When a the line of sight in a multiview is perpendicular to a hole, the hole appears ____.
A. round B. elliptical C. oval D. as a line E. none of the above