Description : What three types of storage elements most often are used in modulators?
Last Answer : Capacitor, artificial transmission line, or pulse-forming network.
Description : What is the name given to the "picture" of a circuit such as the one shown in figure 3-2?
Last Answer : A schematic diagram.
Description : Why are the electrostatic fields between the electron gun elements called lenses?
Last Answer : Because they bend electron streams in much the same manner that optical lenses bend light rays.
Description : What is a set of antenna elements called?
Last Answer : Antenna Array.
Description : Which of the following is correct about Power Point movements: a) Entrance, emphasis and exit of elements on a slide itself are controlled by what Power point calls custom animations b) Transitions on the other ... by animating picture to enter, exit or move d) All of the Above e) None of These
Last Answer : d) All of the Above
Description : How long does it take to scan 2 picture elements when 400 are scanned in 50 microseconds?
Last Answer : 0.25 microsec
Description : An image uses 512 x 512 picture elements. Each element can take any of eight distinguishable levels. The maximum entropy in the above image will be:
Last Answer : 786432 bits
Description : What is the name given to the semiconductor device that has three or more elements?
Last Answer : Transistor
Description : Name the two basic elements of the SCLSIS program
Last Answer : Validation and updating
Description : What are the four elements of the MOSFET?
Last Answer : Gate, source, drain, and substrate.
Description : The broadside array consists of a flat reflector and what other elements?
Last Answer : Two or more half-wave dipoles.
Description : Solder used in electronic repair is normally an alloy of what two elements?
Last Answer : Tin and lead.
Description : The electrons in the beam of a klystron are speeded up by a high dc potential applied to what elements?
Last Answer : The accelerator grid and the buncher grids.
Description : What type of antenna has all elements connected to the same energy source?
Last Answer : Driven Array.
Description : Components made up exclusively of discrete elements are classified as what type of electronics?
Last Answer : Miniature.
Description : Microcircuit refers to any component containing what types of elements?
Last Answer : Integrated circuits.
Description : On the diagram below, name the elements of the vacuum tube and their potentials relative to dc ground. time is an example of what type of transmission?
Last Answer : a. Plate, positive. b. Suppressor grid, negative.
Description : What are interface elements?
Last Answer : Those devices that serve to interconnect.
Description : When testing an SCR with an ohmmeter, the SCR will conduct if what two elements are shorted together?
Last Answer : Gate and anode.
Description : What are the three types of circuit breaker trip elements?
Last Answer : Thermal, magnetic, and thermal-magnetic
Description : What is the advantage of adding parasitic elements to a Yagi array?
Last Answer : Increased gain.
Description : As the spacing between elements in a broadside array increases, what is the effect on the major lobes?
Last Answer : They sharpen.
Description : When more than two elements are used in a broadside array, how are the elements arranged?
Last Answer : Parallel and in the same plane.
Description : How is directivity of a collinear array affected when the number of elements is increased?
Last Answer : Directivity increases.
Description : Why is the number of elements used in a collinear array limited?
Last Answer : As more elements are added, an unbalanced condition in the system occurs which impairs efficiency.
Description : What is the maximum number of elements ordinarily used in a collinear array?
Last Answer : Four.
Description : Magnetic induction occurs when there is relative motion between what two elements?
Last Answer : A conductor and a magnetic field.
Description : The energy dissipated by a resistive load is most often in what form?
Last Answer : Heat.
Description : What loop of a cooling system is often supplied by sea water?
Last Answer : The primary loop.
Description : Transmitter power readings are most often referenced to what power level?
Last Answer : 1 milliwatt.
Description : What type of receiver is most often used in radar systems?
Last Answer : Superheterodyne.
Description : Which of the two general classes of antennas is most often used with radar?
Last Answer : Directional.
Description : What type of ranging circuit is most often used with a radar that requires extremely accurate range data?
Last Answer : Range gate or range step.
Description : Which of the two types of deflection coils (fixed or rotating) is used most often?
Last Answer : Fixed.
Description : Fire-control tracking radar most often radiates what type of beam?
Last Answer : A narrow circular beam.
Description : What type of transmission line is often used to connect a television set to its antenna?
Last Answer : Twin lead.
Description : Why is the negative-resistance magnetron often operated with reduced filament voltage?
Last Answer : To reduce the effects of filament bombardment.
Description : What type of reflector is most often used in directive antennas?
Last Answer : Parabolic.
Description : When cleaning the parts of a tape transport, why should you switch lint-free cloths and swabs often?
Last Answer : You may transfer dirt or oxide particles from one part of the tape transport to another
Description : How often should you demagnetize a recorder's magnetic heads?
Last Answer : Every 8 to 25 hours depending on the manufacturer's recommendations.
Description : Approximately how often should you clean a floppy disk drive that gets heavy use?
Last Answer : Once a month
Description : Why are time-domain reflectometers often compared to a radar system?
Last Answer : Both transmit a pulse and analyze the signal reflection.
Description : In what type of memory are often used instructions and programs permanently stored inside the computer?
Last Answer : Read-only memory (ROM
Description : What terms are often used to describe basic half-wave antennas?
Last Answer : Dipole, doublet and Hertz.
Description : Why is the ac induction motor used more often than other types?
Last Answer : They are simple and inexpensive to make.