What are the three types of modulation that can be applied to an analog signal to enable it to carry information?
What will be an ideal response?
The height of the signal, the frequency of the signal, and the relative starting point, or phase, of the signal.
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The type of electronic distance-measuring instrument that uses a transmitter/receiver at both ends of a measurement line is a(n) _____.
a. infrared b. microwave c. ultrasonic d. visible laser
Inspectors must monitor the quality of milk and dairy products to ensure that the products are:
a. affordable and correctly packaged c. safe and wholesome b. delivered in a timely manner d. nutrient rich and on schedule
The greatest advantage of a digital storage oscilloscope (DSO) is the ____ at which it samples electrical signals.
A. speed B. range C. frequency D. complexity
The "boat people" were
A. the first wave of Vietnamese immigrants who fled to the United States immediately after the fall of Saigon. B. Cuban refugees who fled communism and landed in Florida. C. a second wave of Vietnamese people who sought to escape Vietnam's oppressive communist regime for freedom. D. Cambodians who came to the U.S. seeking a better life after the Vietnam War. E. None of these choices are correct.