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CPL Test Series
Question Bank
Questions for KW GYRO SCOPE
Answer the following questions
Test Mode
Training Mode
1. Transport wander when flying east at 400 Kts at 45 degrees north is?
7.67° per hour.
5.67° per hour.
8.67° per hour.
6.67° per hour.
2. When, in flight, the needle and ball of a needle-and-ball indicator are on the left, the aircraft is?
Turning left with not enough bank.
Turning left with too much bank.
Turning right with not enough bank.
Turning right with too much bank.
3. Transport wander when flying east at 300 Kts at 40 degrees south is?
6.2° per hour.
7.2° per hour.
-4.2° per hour.
-5.2° per hour.
4. Which instrument employs a gravity erecting device on its gyro?
Directional gyro unit.
Artificial horizon.
Turn indicator.
ASI.
5. The pendulum type detector system of the directional gyro feeds?
A torque motor on the sensitive axis.
A nozzle integral with the outer gimbal ring.
A leveling erection torque motor.
2 torque motors arranged horizontally.
6. A gravity erector system is used to correct errors in?
An artificial horizon.
An inertial platform.
A ROT Indicator.
A DGI.
7. The gimbal error of the directional gyro is due to the effect of?
A bank or pitch attitude of the aircraft.
An apparent weight ad an apparent vertical.
The aircraft's track over the earth.
Too slow precession on the horizontal gimbal ring.
8. A gravity erector system is used to correct the errors on?
A directional gyro.
A turn indicator.
A gyro-magnetic compass.
Artificial horizon.
9. Compared with a conventional gyro, a laser gyro?
Has a longer life cycle.
Has a fairly long starting cycle.
Is influenced by temperature.
Consumes a lot of power.
10. What will be the appartent wander on gyroscope when flying on a northeriy track from 05°S to 05° N.
10° per hour.
120° per hour.
Zero.
15° per hour.
11. Transport wander when flying west at 300 Kts at 25 degrees south is?
-2.33° per hour.
3.34° per hour.
-3.34° per hour.
2.33° per hour.
12. 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.
3, 4.
2, 3, 5.
1, 3, 5.
13. The properties unique to a gyro include? 1.Mass. 2.Inertia. 3.Rigidity. 4. Precession. 5. Rotational velocity.
2, 3.
3, 4.
3, 4.
1, 2.
14. Under normal operating conditions, when an aircraft is in a banked turn, the rate-of-turn Indicator is a valuable gyroscopic flight control instrument ; when it is associated with an attitude indicator it indicates? 1. The angular velocity of the aircraft about the yaw axis. 2. The bank of the aircraft. 3. The direction of the aircraft turn. 4. The angular velocity of the aircraft about the real vertical. The combination of correct statements is?
1, 3.
2, 4.
1, 2.
3, 4.
15. At a low bank angle, the measurement of rate-of-turn actually consists in measuring the?
Roll rate of the aircraft.
Yaw rate of the aircraft.
Angular velocity of the aircraft.
Pitch rate of the aircraft.
16. The yaw damper system, uses a __________ gyro and produces rudder Inputs proportional to_________?
Horizontal rate yaw rate.
Vertical rate yaw and roll.
Vertical displacement roll rate.
Horizontal displacement yaw rate.
17. Which instrument uses a vertical gyroscope fitted with a gravity erection device?
Rate gyro.
Turn indicator.
DGI
Artificial horizon.
18. 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.
7.5°/hour to the right.
7.5°/hour to the left.
15°/hour to the right.
19. The maximum directional gyro error due to the earth rotation is?
90°/hour.
180°/hour.
5°/hour.
15°/hour.
20. The properties of a gyro are? 1. Mass. 2. Rigidity in space. 3. Inertia. 4. Precession . 5. Rigidity with reference to the earth
2, 3, 4, 5.
1, 2, 3, 5.
1, 3, 4, 5.
1, 2, 3, 4.
21. What is the maximum gyro drift rate that can be caused by earth rotation?
20° per hour.
5°per hour.
90° per hour.
15°per hour.
22. The directional gyro axis spins about the local vertical by 15°/hour?
In the latitude 45°.
On the North pole.
In the latitude 30°.
On the equator.
23. Earth rate at 25 degrees south is?
13.59° per hour.
-13.59° per hour.
6.34° per hour.
-6.34° per hour.
24. In a turn at constant rate, the turn indicator reading is?
Proportional to the aircraft true airspeed.
Inversely proportional to the aircraft true airspeed.
Independent to the aircraft true airspeed.
Proportional to the aircraft weight.
25. On the ground, during a left turn, the turn indicator indicates?
Needle in the middle, ball to the righ.
Needle in the middle, ball to the left.
Needle to the left ball to the left.
Needle to the left, ball to the right.
26. The properties that are peculiar to a gyroscope are? 1. Inertia. 2. Precession. 3. Rigidity. 4. Angular momentum
2 and 3.
2 and 4.
2, 3, and 4
1 and 2.
27. DGI errors are caused by 1. Mechnical imperfections. 2. Earth rate. 3. Transport wander. 4. Banking when pitching. 5. Annual migration of the poles
All of the above.
1, 2, 3, 4.
2, 3, 4, 5.
3, 4, 5.
28. A turn indicator is built around a gyroscope with?
0 degree of freedom.
1 degree of freedom.
3 degrees of freedom.
2 degrees of freedom.
29. The heading information originating from the gyro-magnetic compass flux value is sent to the?
Heading indicator.
Error detector.
Amplifler.
Erector system.
30. To obtain heading information a gyro-stabilised platform requires?
A horizontal axis and one degree of freedom.
A vertical axis and two degrees of freedom.
A lateral axis and two degrees of freedom.
A vertical axis and one degree of freedom.
31. Note: in this question, the degrees of freedom of a gyro are determined by the number of gimbal rings it comprises. Among the flight control instruments, the artificial horizon plays an essential part. It uses a gyroscope with?
One degree of freedom, whose horizontal axis is maintained in a horizontal plane by an automatic erecting system.
One degree of freedom, whose vertical axis oriented in the direction of the real vertical to the location is maintained in this direction by an automatic erecting system.
Two degrees of freedom, whose horizontal axis corresponding to a reference direction is maintained in a horizontal plane by an automatic erecting system.
Two degrees of freedom, whose axis is oriented and continuously maintained to local vertical by an automatic erecting system.
32. When an aircraft has turned 360 degrees with a constant attitude and bank, the pilot observes the following on a classic artificial horizon?
Too much nose-up and bank correct.
Attitude and bank correct.
Too much nose-up and bank too low.
Too much nose-up and bank too high.
33. The gyro in a vertical reference data generator has? 1. One degrees of freedom. 2. Two degrees of freedom. 3. Vertical axis. 4. Horizontal axis
2, 3.
2, 4.
1, 3.
1, 4.
34. The heading read on the dial of a directional gyro is subject to errors, one of which is due to the movement of the aircraft. This error?
Is at its greatest value when the aircraft follows a meridional track.
Is dependent on the ground speed of the aircraft, its true track and the average latitude of the flight.
Shows itself by an apparent rotation of the horizontal axis of the gyroscope which seems to turn at 15° per hour to the right in the northern hemisphere.
Is, in spite of this, insignificant and may be neglected.
35. Gyroscope rigidity is increased by _______ RPM and concentrating the mass at the _________ of the rotor?
Decreasing hub.
Increasing rim.
Decreasing rim.
Increasing hub.
36. The building principle of a gyroscope, the best efficiency is obtained through the concentration of the mass?
On the periphery and with a low rotation speed.
Close to the axis and with a low rotation speed.
On the periphery and with a high rotation speed.
Close to the axis and with a high rotation speed.
37. A slaved directional gyro derives it's directional signal from?
The air-data-computer.
The flight director.
A direct reading magnetic compass.
The flux valve.
38. The purpose of the torque motor in a gyro stabilised magnetic compass is to?
Preccess the directional gyro.
Move the selsyn stator or calibrate the compass.
Remove flux valve errors.
Align the heading pointer with true heading prior to flight.
39. 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?
2, 3, 4.
1, 4.
2, 3, 5.
1, 2, 3, 4, 5.
40. For an aircraft flying a true track of 390° between the 005°S and 005°N parallels, the precession error of the directional gyro due to apparent drift is equal to?
+5°/hour.
Depends only on the aircraft's ground speed.
0°/hour.
-5°/hour.
41. Rigidity Increases with?
Increasing RPM and spin axis length.
Decreasing RPM and radius.
Increasing RPM, and concentrating mass close to the centre.
Increasing RPM and concentrating mass at the periphery.
42. An airborne Instrument, equipped with a gyro with 1 degree of freedom and a horizontal spin axis is a?
Turn indicator.
Fluxgate compass.
Directional gyro.
Gyro-magnetic compass.
43. A gyro with one degree of freedom is used in a?
Directional gyro unit.
Turn indicator.
Artificial horizon.
Slaved gyro compass.
44. A gravity type erector is used in a vertical gyro device to correct errors on?
An artificial horizon
A directional gyro unit.
A turn indicator.
A gyro-magnetic indicator.
45. What type of gyro has a horizontal spin axis and one degree of freedom?
Rate gyro.
Displacement gyro.
Rate integrating gyro.
Space tyro.
46. Heading information given by a gyro platform, is given by a gyro at?
2 degrees-of-freedom in the vertical axis.
1 degree-of-freedom in the horizontal axis.
2 degrees-of-freedom in the horizontal axis.
1 degree-of-freedom in the vertical axis.
47. Earth rate at 45 degrees north is?
10.61° per hour.
13.59° per hour.
-13.59° per hour.
-10.61° per hour.
48. The gyro-magnetic compass torque motor?
Feeds the error detector system.
Causes the directional gyro unit to precess.
Is fed by the flux value.
Causes the heading indicator to precess.
49. The heading reference unit of a three-axis data generator is equipped with a gyro with?
2 degrees of freedom and horizontal spin axis.
1 degree of freedom and vertical spin axis.
2 degrees of freedom and vertical spin axis.
1 degree of freedom and horizontal spin axis.
50. When an aircraft has turned 90 degrees with a constant attitude and bank, the pilot observes the following on a classic artificial horizon?
Too much nose-up and bank too low.
Too much nose-up and bank too high.
Attitude and bank correct.
Too much nose-up and bank correct.
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