Results
Q1. Deviation compensation in a flux gate compass is done:
Mechanically
Q2. Erection systems are provided for the purpose of:
Erecting and maintaining the gyro in its vertical position.
Q3. Air-driven gyro rotors are prevented from spinning too fast by the:
vacuum relief valve
Q4. 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.
Q5. Why do some gyro instruments topple when the aircraft is placed in an extreme attitude?
because the gimbals reach their limiting stops
Q6. 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.
Q7. Compared with a conventional gyro, a laser gyro:
has a longer life cycle
Q8. The rotational speed of an air-driven gyro is normally:
9000-12000 RPM
Q9. Rigidity in a gyroscope is:
the tendency it has to remain in its plane of rotation and resist attempts to alter its position
Q10. 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
Q11. Precession in a gyroscope is:
the reaction at 90 degrees in direction of rotation caused by a applied force to the spinning wheel
Q12. The operating principle of the pendulous vane unit erecting system is:
The air flow reaction through the open vanes.
Q13. 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.
Q14. Apparent drift in a direction indicator is:
7 1/2°/hour at 30°N and 30°S, and zero at the equator
Q15. How is vacuum provided for the air-driven gyro instruments?
By an engine-driven pump
Q16. What is the main cause of precession?
Bearing friction.
Q17. Failure of the electrical supply to an electrically driven direction indicator may be indicated by:
A red warning flag.
Q18. A laser gyro consists of:
a laser generating two light waves
Q19. The directional gyro keeps its rotation axis aligned toward:
a point in space.
Q20. The error in a direction indicator caused by the convergence of the meridians in northerly and southerly latitudes is called:
transport error