AVIA 230 Quiz 6

AVIA 230 Quiz 6 Liberty University

AVIA 230 Quiz Electrical and Communication Systems

Covers the Learn material from Module 6: Week 6.

1. In the United States, the civil regulatory authority for the RF spectrum is
2. All EM waves possess an electric eld and a ___________ eld direction.
3. Because the ESC generates ______, potentially considerable amounts of it, providing adequate cooling is important, especially where the controller incorporates the additional functionality of an integral BEC
4. Line of sight communications allow a radio to transmit and receive a signal __________
5. To function, all aircraft electrical systems must have ____________
6. The _______________ is simply, the product of the directivity with efficiency which accounts for cable, connector losses, and dielectric losses
7. The most common source of power in all-electric sUAS is one or more ____________
8. The smallest among sUAS are generally powered by ____________
9. ____________ combines information with a carrier signal.
10. The payloads, avionics, and communication systems of large UASs can consume substantial amounts of ________, and the electrical systems of these aircraft share much in common with their manned counterparts
11. The motor controller, also commonly known as a(n) _________________________, is a microprocessor that acts as an inverter/switching device to convert DC to a bidirectional pulsing current (as opposed to a sinusoidal waveform) to provide the desired voltage frequency and voltage amplitude to the motor.
12. While passing through the space between antennas the signal becomes very weak and needs to be amplified in a(n) _______________ very close to the antenna.
13. Unlike voltage, the _________ of a cell is not a function of chemistry, but rather of the amount of active plate or electrode material exposed to the electrolyte.
14. Larger sUAS may use an internal combustion engine for propulsion and to drive a _________ as the primary source of electrical power.
15. As the sUAS electrical system becomes more complex, the use of a(n) __________, or common connection point for wires and multiple circuits, becomes more desirable.
16. Measured in units known as ____________, this ow of electrons constitutes the electrical current.
17. This method spreads the signal being transmitted randomly across multiple center frequencies.
18. Operators can control an aircraft from halfway around the world using satellite communications, and it is common to do so. The drawback is that:
19. A more positive EMI-suppression strategy is the use of ________ wire or cable
20. For the signal to be picked up and demodulated by the receiver a certain ___________________ is required.
21. A(n) __________________ is one that radiates equally in all directions. It is a hypothetical concept, one that does not exist in the real world since it requires the existence of a point-source antenna that is impossible to build.
22. EMI is a type of _________.
23. ___________ losses cannot be ignored and they form the bulk of the losses of the link.
24. A commonly used classification for data links is line-of-sight (LOS) and beyond-lineof- sight (BLOS). In _______ systems the UAV is always in line of sight with the GCS.
25. The _________________ technique is what is known as a spread spectrum technique because it changes frequency of transmission in a pseudorandom fashion as if to spread the energy over a larger bandwidth.

Other sets

1. A commonly used classification for data links is line-of-sight (LOS) and beyond-line of-sight (BLOS). In _______ systems the UAV is always in line of sight with the GCS.
2. A(n) __________________ is one that radiates equally in all directions. It is a hypothetical concept, one that does not exist in the real world since it requires the existence of a point-source antenna that is impossible to build.
3. Line of sight communications allow a radio to transmit and receive a signal
4. The _________________ is the essential nexus of the unmanned aircraft, interconnecting avionics, payload, command and control, onboard computers, and receivers, among other components, into a synergistically holistic, integrated system.
5. The _________________ technique is what is known as a spread spectrum technique because it changes frequency of transmission in a pseudorandom fashion as if to spread the energy over a larger bandwidth.
6. Because all the electrical systems require a __________ circuit through which to conduct the current, a nonconductive structure presents designers of composite UASs with a challenge not facing those tasked with creating structures of metal.
7. As the sUAS electrical system becomes more complex, the use of a(n) __________, or common connection point for wires and multiple circuits, becomes more desirable.
8. For the signal to be picked up and demodulated by the receiver a certain ___________________ is required.
9. The payloads, avionics, and communication systems of large UASs can consume substantial amounts of ________, and the electrical systems of these aircraft share much in common with their manned counterparts.
10. A __________ converts some of the horsepower developed by the engine to power for the electrical system by providing relative motion between a conductor (a winding consisting of multiple loops or turns of wire) and a magnetic, usually electromagnetic, field.
11. A _________ signal carries a power level that overwhelms the receiver making it di]cult or impossible to navigate or complete an intended application. Whether
12. The radiated wave may arrive at the receiver via not only a direct path but also other paths due to reflection, refraction, and diffraction. What is the term given to this occurrence?
13. losses cannot be ignored and they form the bulk of the losses of the link.
14. All EM waves possess an electric field and a ___________ field direction.
15. What part of a radio takes digital data and mixes it with a carrier signal before sending it to an amplifier?
16. The most common source of power in all-electric sUAS is one or more
17. One of the major drawbacks to LiPo batteries is the chance of a run away chemical reaction. During this event the battery can
18. All generators produce a(n) _________ output that must be either mechanically or electronically rectified to DC.
19. Ohm’s law is mathematically expressed in the following way:
20. _____________ results in a binary stream of data.
21. The first step in designing an RF system for a UAS would be to decide the _________ required for the application we have in mind.
22. Laboratory testing greatly improves the performance of the payload systems and helps ensure their safe and effective operation in the field.
23. This step occurs during which step in the design process?
24. When considering electric motors, an ESC refers to the
25. Because the ESC generates ______, potentially considerable amounts of it, providing adequate cooling is important, especially where the controller incorporates the additional functionality of an integral BEC
26. EMI is a type of _________.

Other set

1. What part of a radio takes digital data and mixes it with a carrier signal before sending it to an amplier?
2. The most common source of power in all-electric sUAS is one or more ____________
3. Aviation quality wire (i.e., manufactured according to FAA standards and specications) is sized according to the American Wire Gage (AWG) system in which larger numbers indicate a _________ diameter wire.
4. While passing through the space between antennas the signal becomes very weak and needs to be amplied in a(n) _______________ very close to the antenna.
5. Because the ESC generates ______, potentially considerable amounts of it, providing adequate cooling is important, especially where the controller incorporates the additional functionality of an integral BEC
6. EMI is a type of _________.
7. Ohm’s law is mathematically expressed in the following way:
8. The motor controller, also commonly known as a(n) _________________________, is a microprocessor that acts as an inverter/switching device to convert DC to a bidirectional pulsing current (as opposed to a sinusoidal waveform) to provide the desired voltage frequency and voltage amplitude to the motor.
9. An __________ radiates eciently when electromagnetic energy is guided through a transmission line under matched conditions
10. Measured in units known as ____________, this ow of electrons constitutes the electrical current.
11. Unlike voltage, the _________ of a cell is not a function of chemistry, but rather of the amount of active plate or electrode material exposed to the electrolyte.
12. Even the least complex, remotely piloted aircraft (RPA) rely upon ______________ to receive, process, and distribute input signals to achieve command and control and often for propulsion.
13. For a given UAS circuit, anticipated peak current ow, the maximum voltage drop acceptable in the circuit, and conductor length, from bus to component ground, are likely the most important factors in selecting the correct
14. A _________ signal carries a power level that overwhelms the receiver making it dicult or impossible to navigate or complete an intended application. Whether
15. The _______________ is simply, the product of the directivity with eciency which accounts for cable, connector losses, and dielectric losses
16. All generators produce a(n) _________ output that must be either mechanically or electronically rectied to DC.
17. Line of sight communications allow a radio to transmit and receive a signal __________
18. All EM waves possess an electric eld and a ___________ eld direction.
19. For the signal to be picked up and demodulated by the receiver a certain ___________________ is required.
20. As the sUAS electrical system becomes more complex, the use of a(n) __________, or common connection point for wires and multiple circuits, becomes more desirable.
21. ___________ losses cannot be ignored and they form the bulk of the losses of the link.
22. This method spreads the signal being transmitted randomly across multiple center frequencies.
23. When considering electric motors, an ESC refers to the _________________
24. The first step in designing an RF system for a UAS would be to decide the _________ required for the application we have in mind.
25. Operators can control an aircraft from halfway around the world using satellite communications, and it is common to do so. The drawback is that: