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CPL Test Series
Question Bank
Questions for KW GYRO SCOPE
Answer the following questions
Test Mode
Training Mode
1. What will be the appartent wander on gyroscope when flying on a northeriy track from 05°S to 05° N.
15° per hour.
Zero.
10° per hour.
120° per hour.
2. The gyro in DGI has. 1. One degree of freedom. 2. Two degrees of freedom. 3. Vertical axis. 4. Horizontal axis
2, 4.
2, 3.
1, 3.
1, 4.
3. A slaved directional gyro derives it's directional signal from?
A direct reading magnetic compass.
The flux valve.
The flight director.
The air-data-computer.
4. 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 dependent on the ground speed of the aircraft, its true track and the average latitude of the flight.
Is at its greatest value when the aircraft follows a meridional track.
Is, in spite of this, insignificant and may be neglected.
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.
5. The building principle of a gyroscope, the best efficiency is obtained through the concentration of the mass?
Close to the axis and with a high rotation speed.
On the periphery and with a high rotation speed.
Close to the axis and with a low rotation speed.
On the periphery and with a low rotation speed.
6. Heading information given by a gyro platform, is given by a gyro at?
1 degree-of-freedom in the horizontal axis.
2 degrees-of-freedom in the vertical axis.
2 degrees-of-freedom in the horizontal axis.
1 degree-of-freedom in the vertical axis.
7. 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 too low.
Too much nose-up and bank too high.
Attitude and bank correct.
Too much nose-up and bank correct.
8.
The diagram representing a left turn with insufficient rudder is?
1.
2.
3.
4.
9. What error is caused by movement of the gyro relative to the earth in a DGI?
Longitude latitude error.
Earth rate.
Real wander.
Transport wander.
10. A gyro with one degree of freedom is used in a?
Directional gyro unit.
Slaved gyro compass.
Turn indicator.
Artificial horizon.
11. Following 180° stabilized turn with a constant attitude and bank, the artificial horizon indicates?
Too high pitch-up and correct baning.
Too high pitch-up and too low banking.
Too high pitch up and too high banking.
Attitude and banking correct.
12. The maximum directional gyro error due to the earth rotation is?
180°/hour.
15°/hour.
5°/hour.
90°/hour.
13. Earth rate at 25 degrees south is?
13.59° per hour.
-6.34° per hour.
6.34° per hour.
-13.59° per hour.
14. What is the maximum gyro drift rate that can be caused by earth rotation?
15°per hour.
20° per hour.
90° per hour.
5°per hour.
15. DGI errors are caused by 1. Mechnical imperfections. 2. Earth rate. 3. Transport wander. 4. Banking when pitching. 5. Annual migration of the poles
2, 3, 4, 5.
All of the above.
3, 4, 5.
1, 2, 3, 4.
16. At a low bank angle, the measurement of rate-of-turn actually consists in measuring the?
Pitch rate of the aircraft.
Roll rate of the aircraft.
Angular velocity of the aircraft.
Yaw rate of the aircraft.
17. In a Turn-indicator, the measurement of rate of turn consists for?
High bank angles, in measuring the yaw rate.
High bank angles, in measuring the roll rate.
Low bank angles, in measuring the yaw rate.
Low bank angles, in measuring the roll rate.
18. A Standby horizon or emergency attitude indicator?
Is fully independent of external energy resources in an emergency situation.
Contains its own separate gyro.
Only works of there is a complete electrical failure.
Is automatically connected to the primary vertical gyro if the alternator fails.
19. Which instrument uses a vertical gyroscope fitted with a gravity erection device?
Turn indicator.
DGI
Rate gyro.
Artificial horizon.
20.
When viewed from above a gyro is seen to rotate on a vertical spin axis, as illustrated in the diagram. if a force tends to push the right side downwards?
It will tilt upwards at the back.
It will tilt upwards at the right.
It will tilt upwards at the front.
It will tilt upwards at the left.
21. To obtain heading information a gyro-stabilised platform requires?
A horizontal axis and one degree of freedom.
A vertical axis and one degree of freedom.
A lateral axis and two degrees of freedom.
A vertical axis and two degrees of freedom.
22. The input signal of the amplifier of the gyro-magnetic compass resetting device originates from the?
Directional gyro erection device.
Error deterctor.
Directional gyro unit.
Flux value.
23. The properties of a gyro are? 1. Mass. 2. Rigidity in space. 3. Inertia. 4. Precession . 5. Rigidity with reference to the earth
1, 2, 3, 5.
2, 3, 4, 5.
1, 3, 4, 5.
1, 2, 3, 4.
24. Transport wander when flying west at 300 Kts at 25 degrees south is?
-2.33° per hour.
3.34° per hour.
2.33° per hour.
-3.34° per hour.
25. Earth rate at 45 degrees north is?
-15° per hour.
15° per hour.
Zero.
6.34° per hour.
26. A turn indicator is an instrument which indicates rate of turn. Rate of turn depends upon: 1.Bank angle. 2. Aeroplane speed. 3. Aeroplane weight. The combination regrouping the correct statements is?
2 and 3.
1 and 2.
1, 2, and 3.
1 and 3.
27. Compared with a conventional gyro, a laser gyro?
Has a fairly long starting cycle.
Has a longer life cycle.
Consumes a lot of power.
Is influenced by temperature.
28. The number of degrees of freedom of a gyro is?
One less than the number of gimbals.
Not related to the number of gimbals.
One more than the number of gimbals.
The same as the number of gimbals.
29. When an aircraft has turned 270 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.
Attitude and bank correct.
Too much nose-up and bank correct.
Too much nose-up and bank too high.
30. When, in flight, the needle and ball of a needle and ball indicator are on the right, the aircraft is?
Turning right with not enough bank.
Turning left with not enough bank.
Turning right with too much bank.
Turning left with too much bank.
31. The properties that are peculiar to a gyroscope are? 1. Inertia. 2. Precession. 3. Rigidity. 4. Angular momentum
2 and 3.
2, 3, and 4
2 and 4.
1 and 2.
32. Rigidity Increases with?
Increasing RPM and concentrating mass at the periphery.
Increasing RPM and spin axis length.
Increasing RPM, and concentrating mass close to the centre.
Decreasing RPM and radius.
33. An airborne Instrument, equipped with a gyro with 1 degree of freedom and a horizontal spin axis is a?
Fluxgate compass.
Turn indicator.
Directional gyro.
Gyro-magnetic compass.
34. Earth rate at 45 degrees north is?
10.61° per hour.
13.59° per hour.
-13.59° per hour.
-10.61° per hour.
35. 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
1, 4.
2, 3.
1, 3.
2, 4.
36. When, in flight, the needle of a needle and ball indicator is on the right and the ball on the left, the aircraft is?
Turning right with too much bank.
Turning left with not enough bank.
Turning left with too much bank.
Turning right with not enough bank.
37. The heading information originating from the gyro-magnetic compass flux value is sent to the?
Erector system.
Error detector.
Amplifler.
Heading indicator.
38. An airborne Instrument, equipped with a gyro with 2 degrees of freedom and a horizontal spin axis is?
A flux gate compass.
A turn indicator.
A directional gyro.
An artificial horizon.
39. The directional gyro axis spins about the local vertical by 15°/hour?
In the latitude 45°.
In the latitude 30°.
On the North pole.
On the equator.
40. The properties unique to a gyro include? 1.Mass. 2.Inertia. 3.Rigidity. 4. Precession. 5. Rotational velocity.
3, 4.
1, 2.
2, 3.
3, 4.
41. On the ground, during a right turn, the turn indicator indicates?
Needle to the right, ball to right
Needle to the right, ball to left.
Needle in the middle, ball to left.
Needle in the middle, ball to right.
42. A gravity erection device would be used on?
Artificial horizon.
VSI
DGI.
Turn and slip Indicator.
43. The dither motor in a ring laser gyroscope?
Prevents laser lock.
Increases accuracy at all rotation rates.
Prevents or minimises transport wander.
Stabilises the frequency or the laser source.
44. 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?
Two degrees of freedom, whose axis is oriented and continuously maintained to local vertical 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.
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.
45. Gyro rigidity improves with?
Increasing RPM, mass and radial displacement of mass.
Decreasing RP but increasing mass and radial displacement o mass.
Decreasing RPM and mass but increasing radial displacement of mass.
Increasing RPM and mass but decreasing radial displacement of mass.
46. The indications on a directional gyroscope or gyrocompass are subject to errors, due to: 1. Rotation of Earth, 2. Aeroplane motion on Earth. 3. Lateral and transversal aeroplane bank angles. 4. North change. 5. Mechanical defects. Chose the combination with true statements only?
3, 4, 5.
1, 2, 4, 5.
1, 2, 3, 5.
2, 3, 5.
47. In a turn at constant rate, the turn indicator reading is?
Independent to the aircraft true airspeed.
Proportional to the aircraft weight.
Proportional to the aircraft true airspeed.
Inversely proportional to the aircraft true airspeed.
48. The rate-of -turn is the?
Yaw rate in a turn aircraft.
Pitch rate in a turn.
Speed in a turn.
Change-of-heading rate of the aircraft.
49. The gyro-magnetic compass torque motor?
Is fed by the flux value.
Causes the directional gyro unit to precess.
Causes the heading indicator to precess.
Feeds the error detector system.
50. A gravity type erector is used in a vertical gyro device to correct errors on?
A directional gyro unit.
An artificial horizon
A gyro-magnetic indicator.
A turn indicator.
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