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UD4. L15-18 2015__1

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David Nunez
Quiz by David Nunez, updated more than 1 year ago
David Nunez
Created by David Nunez almost 6 years ago
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Resource summary

Question 1

Question
Q1. What is the main parameter to know the Mach Number?
Answer
  • Pressure
  • Temperature
  • Both are true.
  • Both are false.

Question 2

Question
Q2. What is a disadvantage of Thermistors?
Answer
  • Need electrical source.
  • Need pneumatic source.
  • Need hydraulic source.
  • All are false.

Question 3

Question
Q3. What is a direct reading thermometer?
Answer
  • Liquid expansion.
  • Vapor expansion.
  • Bi-metallic helix.
  • All of above are correct.

Question 4

Question
Q4. What is an advantage of Thermocouples?
Answer
  • a) No electrical source needed.
  • b) Temperature compensation to compensate cold junction variations.
  • c) Can measure higher temperatures.
  • d) a and c are correct.

Question 5

Question
Q5. What is the true option about optical pyrometer used by the Eurofighter?
Answer
  • The wavelength of radiation emitted by bodies is temperature dependant.
  • The wavelength of radiation emitted by bodies is pressure dependant.
  • The wavelength of radiation emitted by bodies is temperature independant.
  • None are true.

Question 6

Question
Q6. What is the function of the Drain Hole of the Pitot?
Answer
  • Allows any moisture to leak away without affecting sensing pressure.
  • Allows any moisture to leak away without affecting sensing temperature.
  • Allows any moisture to leak away affecting sensing pressure.
  • All are false.

Question 7

Question
Q7. What is VNE:
Answer
  • Never exceed speed.
  • Not exceed speed.
  • Non exceeding speed.
  • All are correct.

Question 8

Question
Q8. Where is the best place to put the pitot-static on an airplane?
Answer
  • In places where the attitude changes.
  • Behind the boundary layer.
  • In places where the attitude does not change much.
  • All are false.

Question 9

Question
1. About the IVSI (Instantaneous Vertical Speed Indicator), it’s important to know that:
Answer
  • It has a response to nose up and nose down respectively and it’s lag is huge.
  • It has a response to roll left and right and it’s lag is small.
  • It has a response to nose up and nose down respectively and isn’t lag is almost null.
  • Is not affected by G forces.

Question 10

Question
2. About the pressure transducer:
Answer
  • Is a tranlator of the pressure regulator.
  • It works as a conversor sensed pressure into an electrical signal.
  • It is not used in aviation.
  • Is the main part of an aircraft.

Question 11

Question
3. Before do a navigation, it’s important to know:
Answer
  • The direction of the travel.
  • The speed we’ll be traveling.
  • The distance and more.
  • All are correct.

Question 12

Question
4. About the magnetic field on Earth:
Answer
  • Is the same in all the seasons.
  • Is the same regardless the hour in a day.
  • Both are true
  • Both are false

Question 13

Question
5. What is a isoclinal line?
Answer
  • Line that join the points that have the same dip angle.
  • Line with the same magnetic field.
  • A correct, B false.
  • A false, B correct.

Question 14

Question
6. Rigidity is:
Answer
  • Resistant of a material to be broken.
  • Resistant of a material to be doubled.
  • Resistance of the spin axis to tilting.
  • Resistant to pitch up and down.

Question 15

Question
7. What precession is?
Answer
  • When a torque is applied along a direction perpendicular to the spin axis, the gyroscope will not tilt in the same direction of the torque.
  • When you apply a torque, the gyroscope moves to another place.
  • A is true, B false.
  • B is false, A true.

Question 16

Question
8. What is the Gyro Wander?
Answer
  • a) Is the deviation of the ADI.
  • b) There are some types: Real wander, Apparent wander, Transport wander, and Transport Grid wander.
  • c) Is the deviation of the spin axis from its set direction.
  • d) Both B and C are true.

Question 17

Question
Q1. What is a gyroscope?
Answer
  • A. Rigid body without motion in any plane
  • B. Rigid body with one principal moment of inertia much larger than the other two, in high spin around its axis of maximum inertia.
  • C. It's a device for measuring or maintaining orientation, based on the principle of preserving angular momentum
  • D. b) and c) are true

Question 18

Question
Q2. A gyroscope are driven by:
Answer
  • a) Air
  • b) Water
  • c) Electricity
  • d) a) and c) are true

Question 19

Question
Q3. A gyroscope which is N-S aligned
Answer
  • A. Over equator it drifts 15º per hour
  • B. Over north Pole it drifts 15º per hour
  • C. It never have drift effect
  • D. A gyroscope never can be N-S aligned

Question 20

Question
Q4. A gyro wander is a deviation of the spin axis from its set direction. Some real wander happen as a consequence of:
Answer
  • Bearing's friction
  • Angular accelerations
  • Undesired and aleatory
  • All are true

Question 21

Question
Q5. A heading indicator
Answer
  • It's manually aligned with the direct reading magnetic compass
  • It's north seeking
  • Has freedom in one plane
  • It isn't continuously adjusted

Question 22

Question
Q6. Radio Magnetic Indicator shows:
Answer
  • A. Magnetic heading
  • B. Magnetic bearing with respect to ground stations with radio navigation systems
  • C. Distance to ground stations
  • D. a) and b) are true

Question 23

Question
Q7. An artificial horizon
Answer
  • Has vertical spin axis Earth
  • Has three degrees of freedom
  • Indicates airplane attitude relative to pitch and roll axes
  • All are true

Question 24

Question
Q8. Artificial horizons which have air driven system suffer errors due to pendulosity of the system:
Answer
  • A. Acceleration errors
  • B. Turning errors
  • C. Both, a) and b) are true
  • D. Artificial horizons with air driven system don't suffer any error

Question 25

Question
Q1. Quality of information in Inertial Navigation Systems depends on:
Answer
  • A. Accuracy of the initial data.
  • B. Precision of the system alignment with true north.
  • C. None of the above is correct.
  • D. A and B are correct.

Question 26

Question
Q2. Inertial Navigation Systems can be classified in:
Answer
  • A. Inertial and Earth referenced INS.
  • B. Gimballed and Strapdown INS.
  • C. INS with fixes axis and INS referenced in the Earth.
  • D. None of the above is correct.

Question 27

Question
Q3.Some components in the INS are:
Answer
  • Inertial Navigation Unit.
  • Mode Selector Unit.
  • Control Display Unit.
  • All of the above are correct.

Question 28

Question
Q4. Force Balance Acelerometer is based on:
Answer
  • A. The angular displacement of a pendulum
  • B. The vertical displacement of a pendulum
  • C. The horizontal displacement of a pendulum
  • D. A and B are correct.

Question 29

Question
Q5. In the Gyro Stabilised Platform are used:
Answer
  • A. 2 gyros
  • B. 3 gyros
  • C. 4 gyros
  • D. It depends on the different platforms.

Question 30

Question
Q6. Some corrections in the Gyro Stabilised Platform is:
Answer
  • Gyro drift and topple due to apparent and transport wander.
  • Accelerations correction by Coriolis Force.
  • Centripetal acceleration.
  • All of the above are correct.

Question 31

Question
Q8. About FOG:
Answer
  • Are similar to RLG.
  • Are more expensive than RLG.
  • Vibrator is needed.
  • None of the above is correct

Question 32

Question
Q7. Some types of integrators are:
Answer
  • Analogic and digital.
  • Analogic and CC amplifiers.
  • CC amplifiers and AC generator-tacometers
  • All of above are correct.
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