Results
Q1. Deviation compensation in a flux gate compass is done:
Mechanically
Q2. How is vacuum provided for the air-driven gyro instruments?
By an engine-driven pump
Q3. Failure of the electrical supply to an electrically driven direction indicator may be indicated by:
A red warning flag.
Q4. Why do some gyro instruments topple when the aircraft is placed in an extreme attitude?
because the gimbals reach their limiting stops
Q5. The operating principle of the pendulous vane unit erecting system is:
The air flow reaction through the open vanes.
Q6. Apparent drift in a direction indicator is:
7 1/2°/hour at 30°N and 30°S, and zero at the equator
Q7. A rate integrating gyro is a detecting element used in: 1. An inertial attitude unit 2. An automatic pilot 3. A stabilizing servo system 4. An inertial navigation system 5. A rate-of-turn indicator. The combination of correct statements is:
1,4.
Q8. Precession in a gyroscope is:
the reaction at 90 degrees in direction of rotation caused by a applied force to the spinning wheel
Q9. The directional gyro keeps its rotation axis aligned toward:
a point in space.
Q10. Erection systems are provided for the purpose of:
Erecting and maintaining the gyro in its vertical position.
Q11. Rigidity in a gyroscope is:
the tendency it has to remain in its plane of rotation and resist attempts to alter its position
Q12. The rotational speed of an air-driven gyro is normally:
9000-12000 RPM
Q13. The basis properties of a gyroscope are: 1. The gyro’s weight. 2. The rigidity in space. 3. The inertia. 4. The high RPM. 5. The precession. The combination of correct statements is:
2,5
Q14. Compared with a conventional gyro, a laser gyro:
has a longer life cycle
Q15. Air-driven gyro rotors are prevented from spinning too fast by the:
vacuum relief valve
Q16. Among the systematic errors of the “directional gyro”, the error due to the earth rotation make the north reference turn in the horizontal plane. At a mean latitude of 45°N this reference turns by:
10.5°/hour to the right.
Q17. The error in a direction indicator caused by the convergence of the meridians in northerly and southerly latitudes is called:
transport error
Q18. A laser gyro consists of:
a laser generating two light waves
Q19. What is the main cause of precession?
Bearing friction.
Q20. In the building principle of a gyroscope, the best efficiency is obtained through the concentration of the mass:
on the periphery and with a high rotation speed.
