GYROSCOPE - Dgca question bank for pilots

Results

#1. The basic 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

#2. In the building principle of a gyroscope, the best efficiency is obtained through the concentration of the mass:

close to the axis and with a low rotation speed

on the periphery and with a low rotation speed

on the periphery and with a high rotation speed

#3. Rigidity in a gyroscope is:

the reaction 90° in the direction of rotation when applying force to the spinning wheel

a way to express the stability of the inner and outer gimbal rings

the tendency it has to remain in its plane of rotation and resist attempts to alter its position.

#4. Sources of power for Gyroscopic operations in an aircraft are:

Vaccum, gravity and rigidity

Vaccum, pressure and electrical

Rigidity, rotor speed and movement of inertia

#5. The number of degrees of freedom of a gyro is?

One more than the number of gimbals

The same as the number of gimbals

One less than the number of gimbals

#6. A directional gyro requires?

One gimbal, one degree of freedom and a horizontal spin axis

Two gimbals, two degrees of freedom and a horizontal spin axis

Three gimbals, three degrees of freedom and a lateral spin axis

#7. What type of gyro has a horizontal spin axis and one degree of freedom?

Rate gyro

Displacement gyro

Rate integrating gyro

#8. The properties of a gyro are? 1. Mass 2. Rigidity in space 3. Inertia 4. Precession 5. Rigidity with reference to the earth.

1,2,3,4

1,3,4,5

1,2,3,5

#9. Gyro rigidity improve with?

Increasing RPM, mass and radial displacement of mass

Increasing RPM and mass but decreasing radial displacement of mass

Decreasing RPM but increasing mass and radial displacement of mass

#10. The dither motor in a ring laser gyroscope?

Stabilizes the frequency or the laser source

Prevents laser lock

Prevents or minimizes transport wander

#11. A/H indications are reliablie in

±85° pitch, ±90° roll

±55° pitch, ±85° roll

±85° pitch, ±180° roll

± °

#12. During take off roll an a/c fitted with vacuum driven A?H will show:

Climb and bank to right

Only climb and no bank as a/c is on ground

Will read correct as a/c on ground (Irrespective of a/c position, indications will be the same)

#13. An a/c rolls out after 180° steep turn to the right with reference to natural horizon. A/H will show

Climb and slight bank to the right

Level and bank to the left

Climb and slight bank to the left

#14. An a/c rolls out after 180° steep turn to the left with reference to natural horizon. A/H will show.

Climb and slight turn to the right

Level and bank to the left

Climb and slight bank to the left

#15. Among the flight control instruments, the artificial horizon plays an essential part. It uses a gyroscope with: (Note: in this question, the degrees of freedom of a gyro are determined by the number of gimbal rings it comprises)

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

#16. 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 high

too much nose-up and bank too low

too much nose-up and bank correct

#17. Following 180° stabilized turn with a constant attitude and bank, the artificial horizon indicates:

too high pitch up and too high banking

attitude and banking correct

too high pitch-up and too low banking

#18. 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 high

#19. Classic artificial horizon Indications turning through 180° at constant AOB?

Nose up and AOB too low

Nose up and AOB too high

Nose up and correct AOB

#20. During an acceleration phase at constant attitude, the resetting principle of the artificial horizon results in the horizon bar indicating a:

nose-down followed by a nose-up attitude

constant attitude

nose-up attitude

#21. When an aircraft has turned 270 degrees with a constant attitude and bank the pilot observes the following on a classic artificial horizon:

attitude and bank correct

too much nose-up and bank correct

too much nose-up and bank too low

#22. How many degrees of freedom and what is the spin axis of an attitude indiciator?

Local earth vertical two degrees of freedom

Aircraft lateral axis two degrees of freedom

Aircraft horizontal axis one degree of freedom

#23. What would be the indication on an attitude indicator in a right turn?

Climb due to pendulous vanes

No climb

Descent due to pendulous vanes

#24. What will a classic artificial horizon indicate when turning through 90 degree at constant attitude and bank angle?

Correct bank angle and attitude

Too much bank and too much nose up attitude

Too little bank and too much nose up attitude

#25. How will a basic AI respond if an aircraft performs a 270 degree turn at constant bank angle and ROT?

Nose up and bank

Nose down and bank

Noise level and bank

#26. What are the errors in a DGI? 1. Transport wander 2. Earth rate 3. Heading errors when banking and pitching, 4. Mechanical imperfections.

1,2,3

1,2,4

All of the above

#27. What is the function of the altitude nut on a DI?

To correct Coriolis effect

To compensate for earth rate error

To compensate for latitude error

#28. What error is introduced into a DGI due to movement of the gyro relative to the earth?

Transport wander

Earth rate error

Altitude error

#29. The maximum directional gyro error to the earth rotation is:

20°/hour

15°/hour

4°/hour

#30. A directional gyro is: 1. a gyroscope free around two axis 2. a gyroscope free around one axis 3. capable of self-orientation around an earth-tied direction 4. Incapable of self-orientation around an earth -tied direction. The combination of correct statements is:

2,3

2,4

1,4

#31. An airborne instrument, equipped with a gyro with 2 degrees of freedom and horizontal spin axis is:

a flux gate compass

a directional gyro

a turn indicator

#32. 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….

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 dependent on the ground speed of the aircraft, its true tack and the average latitude of the flight

is at its greatest valve when the aircraft follows a meridian track

#33. The gimbal error of the directional gyro is due to the effect of:

an apparent weight and an apparent vertical

two slow procession on the horizontal gimbal ring

a bank or pitch attitude of the aircraft

#34. The characteristics of the directional gyro (DG) used in a gyro stabilized compass system are:

two degrees of freedom, whose axis aligned with the vertical to the location is maintained in this direction by an erecting system

two degrees of freedom, whose horizontal axis corresponding to the reference direction is maintained in the horizontal plane by an automatic erecting system

one degree of freedom, whose vertical axis, aligned with the real vertical to the location is maintained in this direction by an automatic erecting system

#35. The indication of the directional gyro as an on-board instrument are valid only for a short period of time. The causes of this inaccuracy are: 1. the earth’s rotation 2. the longitudinal acceleration 3. the aircraft’s motion over the surface of the earth 4. the mechanical defects of the gyro 5. the gyro’s weight 6. the gimbal mount of the gyro rings. The combination of the correct statements is:

1,3,4

1,3,4,6

2,5,6

#36. The indications on a directional gyroscope or gyrocompass are subject to errors, due to: 1. rotation of Earth 2. aero plane motion on Earth 3. lateral and transversal aero plan bank angles 4. north change 5. mechanical defects The combination of correct statements is:

2,3,5

3,4,5

1,2,3,5

#37. A/C turns with rate 1 at TAS = 150, Bank angle

CHECK ANSWER

BANK = TAS/10 + 7 = 15+7 = 22°

#38. An a/c turns left from Hdge 045° to 315° at rate 1. Time taken will be. Bank = TAS/10 + 7

30 sec

45 sec

90 sec

#39. An a/c is turning with rate I with TAS = 250 kts. Find bank angle required.

CHECK ANSWER

BANK = TAS/10 + 7 = 250/10 + 7 = 25°+7 = 32°

#40. An aircraft if flying at a 120kt true airspeed, In order to achieve a rate 1 turn, the pilot will have to bank the aircraft at an angle of:

12°

19°

30°

#41. To maintain same rate of turn, if CAS is increased, bank should be

Increased

Decreased

Same

#42. In comparison to low level, to maintain same rate of turn, RAS at higher level is to be –

Increased

Decreased

Same

#43. In comparison to low level at higher level, if RAS is kept constant to maintain same rate. Bank is to be

Increased

Decreased

Same

#44. The ball in a serviceable slip indicator is ___ by _ and ___ indicate the state of slip.

Held central, gravity, does not always

Positioned, Acceleration, does not always

Held central, gravity, always

#45. Increasing altitude at constant TAS will ____ the angle of Bank required to achieve a rate 1 turn,

Increase

Decrease

Not affect

#46. Following a left engine failure the pilot of a multi engine a/c uses rudder to oppose yaw and keeps the a/c on hdg while using bank to prevent side slip. The TSI will show:

both needle and ball central

Both needle and ball to the right

Needle central and ball to the right. Since a/c is maintained hdg; the a/c is not turning, so needle is central

#47. The rate turn indicator uses a gyroscope: 1. with one degree of freedom 2. with two degrees of freedom 3. the frame of which is supported by two return springs 4. the spinning wheel axis of which is parallel to the pitch axis 5. the spinning wheel axis of which is parallel to the yawing axis 6. the spinning wheel axis of which is horizontal The combination of correct statements is:

2,5

1,6

1,3

#48. In a Turn-indicator, the measurement of a rate – of -turn consists of:

high bank angles, in measuring the yaw rate

high bank angles, in measuring the roll rate

low bank angles, in measuring the yaw rate

#49. In a turn at constant rate, the turn indicator reading is:

independent to the aircraft true airspeed

inversely proportional to the aircraft true airspeed

proportional to the aircraft true airspeed

#50. An airborne instrument, equipped with a gyro with 1 degree of freedom and horizontal spin axis is a:

fluxgate compass

directional gyro

turn indicator

#51. A turn indicator is an instrument which indicates rate of turn. Rate of turn depends on: 1. bank angle 2. aero plan speed 3. aero plane weight The combination of correct statements is:

1,3

1,2

2,3

#52. When, in flight, the needle of a needle-and-ball indicator is on the left and the ball on the right, the aircraft is:

turning right with not enough bank

turning left with too much bank

turning left with not enough bank

#53. 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 left with too much bank

turning right with not enough bank

turning left with not enough bank

#54. When, in flight, the needle and a ball of a needle-and-ball indicator are on the right, the aircraft is:

turning left with not enough bank

turning left with too much bank

turning right with too much bank

#55. When, in flight, the needle and ball of a needle-and-ball indicator are on the left, the aircraft is:

turning right with not enough bank

turning right with too much bank

turning left with too much bank

#56. On the ground, during a left turn, the turn indicator indicates:

needle to the left, ball to the right

needle in the middle, ball to the right

needle to the left, ball to the left

#57. On the ground, during a right turn, the turn indicator indicates:

needle to the right, ball to the right

needle to the right, ball to the left

needle in the middle, ball to the right

#58. Under normal operating conditions, when an aircraft is in banked turn, the rate-of-turn indicator is 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:

1,2

3,4

1,3

#59. A turn indicator is built around a gyroscope with:

1 degree of freedom

0 degree of freedom

3 degrees of freedom

#60. The rate-of-turn is the:

pitch rate in a turn

change-of-heading rate of the aircraft

aircraft speed in a turn

#61. A turn indicator used in conjunction with an attitude indicator will show? 1. Turn direction 2. Rate of turn, 3. Angular velocity about the true vertical axis 4. Angular velocity about the aircraft vertical axis 5. Angular velocity about the longitudinal axis

1,2

1,3

1,2,4

#62. ROT indications are?

Proportional to TAS

Proportional to CAS

Proportional to mass

#63. When both the needle and ball of a turn and slip indicator are displaced to the right the aircraft is?

Turning right with too much TAS

Turning right with insufficient TAS

Turning left with too much TAS

#64. What will be the immediate turn and slip indications when a left engine fails in climbing flight.

Needle and ball left

Needle and ball right

Needle left and ball right

#65. When turning at constant bank angle the rate of turn is?

Determined by weight and TAS

Determined by weight

Determined by TAS

#66. What factors affect the turn indicator? 1. AofA 2.AOB 3. TAS 4. Weight

1,2

1,3

2,3

#67. What are the essential properties of a turn indicator? 1. Two degrees of freedom 2. One degree of freedom 3. Horizontal spin axis 4. Vertical spin axis 5. Longitudinal spin axis

1,2

2,3

3,4

#68. On a TSI what does it indicate when the turn needle is out to the left and the ball out to the right?

Right turn with too much bank

Left turn with too little bank

Left turn with too much bank

#69. What should a turn and slip indicator show in a right turn on the ground?

Needle left and ball left

Needle left and ball right

Needle right and ball left

#70. If the turn and slip indicator shows needle left and ball left in a banked turn, the aircraft is __ and the required corrective action is _?

Skidding push left pedal forward

Skidding push right pedal forward

Slipping push left pedal forward

#71. If the turn and slip indicator shows needle left and ball right in a banked turn, the aircraft is and the required corrective actions is_?

Skidding push left pedal forward

Skidding push right pedal forward

Slipping push left pedal forward

#72. What corrective action is required if the ball is out to the right in a left turn?

More right ruder

More left rudder

More left bank

#73. If both the ball and needle are out to the left in a turn, the ball can be centralized by?

Pushing the right rudder bar forward

Increasing TAS

Decreasing TAS

#74. For a coordinated rate 1 right turn at 250 Kts TAS, in clean configuration the correct AOB is approximately?

32 degrees

23 degrees

16 degrees

#75. For a coordinated rate 1 left turn at an AOB of 27 degrees, the TAS should be?

200 Kts

250 kts

270 Kts

#76. The gyro in a turn indicator must have _ gimbal _ and ___ degrees of freedom?

One one

Two one

Two two

#77. If the turn indicator needle is out to the right and the ball is out to the left, it indicates?

A left turn with too much bank

A left turn with too little bank

A right turn with too little bank

#78. What angle of bank is required to conduct a balanced rate 1 turn in an aircraft at 125 kts TAS at a mass of 55000 Kg?

15.5 degrees

17.5 degrees

19.5 degrees

#79. If the mass of the aircraft was decreased from 60000 Kg to 45000 Kg?

It would increase the required AOB

It would decrease the required AOB

It would not affect the required AOB, but less power would be required

#80. A turn indicator used in conjunction with an attitude indicator can show? 1. TAS in a turn 2. Direction of turn 3. Angular velocity about the vertical axis of the aircraft. 4. Angular velocity about the true vertical axis

1,2

1,3

2,3

Finish

Results

#1. The basic 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. In the building principle of a gyroscope, the best efficiency is obtained through the concentration of the mass:

#3. Rigidity in a gyroscope is:

#4. Sources of power for Gyroscopic operations in an aircraft are:

#5. The number of degrees of freedom of a gyro is?

#6. A directional gyro requires?

#7. What type of gyro has a horizontal spin axis and one degree of freedom?

#8. The properties of a gyro are? 1. Mass 2. Rigidity in space 3. Inertia 4. Precession 5. Rigidity with reference to the earth.

#9. Gyro rigidity improve with?

#10. The dither motor in a ring laser gyroscope?

#11. A/H indications are reliablie in

#12. During take off roll an a/c fitted with vacuum driven A?H will show:

#13. An a/c rolls out after 180° steep turn to the right with reference to natural horizon. A/H will show

#14. An a/c rolls out after 180° steep turn to the left with reference to natural horizon. A/H will show.

#15. Among the flight control instruments, the artificial horizon plays an essential part. It uses a gyroscope with: (Note: in this question, the degrees of freedom of a gyro are determined by the number of gimbal rings it comprises)

#16. When an aircraft has turned 90 degrees with a constant attitude and bank, the pilot observes the following on a classic artificial horizon:

#17. Following 180° stabilized turn with a constant attitude and bank, the artificial horizon indicates:

#18. When an aircraft has turned 360 degrees with a constant attitude and bank, the pilot observes the following on a classic artificial horizon:

#19. Classic artificial horizon Indications turning through 180° at constant AOB?

#20. During an acceleration phase at constant attitude, the resetting principle of the artificial horizon results in the horizon bar indicating a:

#21. When an aircraft has turned 270 degrees with a constant attitude and bank the pilot observes the following on a classic artificial horizon:

#22. How many degrees of freedom and what is the spin axis of an attitude indiciator?

#23. What would be the indication on an attitude indicator in a right turn?

#24. What will a classic artificial horizon indicate when turning through 90 degree at constant attitude and bank angle?

#25. How will a basic AI respond if an aircraft performs a 270 degree turn at constant bank angle and ROT?

#26. What are the errors in a DGI? 1. Transport wander 2. Earth rate 3. Heading errors when banking and pitching, 4. Mechanical imperfections.

#27. What is the function of the altitude nut on a DI?

#28. What error is introduced into a DGI due to movement of the gyro relative to the earth?

#29. The maximum directional gyro error to the earth rotation is:

#30. A directional gyro is: 1. a gyroscope free around two axis 2. a gyroscope free around one axis 3. capable of self-orientation around an earth-tied direction 4. Incapable of self-orientation around an earth -tied direction. The combination of correct statements is:

#31. An airborne instrument, equipped with a gyro with 2 degrees of freedom and horizontal spin axis is:

#32. 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….

#33. The gimbal error of the directional gyro is due to the effect of:

#34. The characteristics of the directional gyro (DG) used in a gyro stabilized compass system are:

#36. The indications on a directional gyroscope or gyrocompass are subject to errors, due to: 1. rotation of Earth 2. aero plane motion on Earth 3. lateral and transversal aero plan bank angles 4. north change 5. mechanical defects The combination of correct statements is:

#37. A/C turns with rate 1 at TAS = 150, Bank angle

#38. An a/c turns left from Hdge 045° to 315° at rate 1. Time taken will be. Bank = TAS/10 + 7

#39. An a/c is turning with rate I with TAS = 250 kts. Find bank angle required.

#40. An aircraft if flying at a 120kt true airspeed, In order to achieve a rate 1 turn, the pilot will have to bank the aircraft at an angle of:

#41. To maintain same rate of turn, if CAS is increased, bank should be

#42. In comparison to low level, to maintain same rate of turn, RAS at higher level is to be –

#43. In comparison to low level at higher level, if RAS is kept constant to maintain same rate. Bank is to be

#44. The ball in a serviceable slip indicator is _____ by _____ and _____ indicate the state of slip.

#45. Increasing altitude at constant TAS will ____ the angle of Bank required to achieve a rate 1 turn,

#46. Following a left engine failure the pilot of a multi engine a/c uses rudder to oppose yaw and keeps the a/c on hdg while using bank to prevent side slip. The TSI will show:

#48. In a Turn-indicator, the measurement of a rate – of -turn consists of:

#49. In a turn at constant rate, the turn indicator reading is:

#50. An airborne instrument, equipped with a gyro with 1 degree of freedom and horizontal spin axis is a:

#51. A turn indicator is an instrument which indicates rate of turn. Rate of turn depends on: 1. bank angle 2. aero plan speed 3. aero plane weight The combination of correct statements is:

#52. When, in flight, the needle of a needle-and-ball indicator is on the left and the ball on the right, the aircraft is:

#53. When, in flight, the needle of a needle-and-ball indicator is on the right and the ball on the left, the aircraft is:

#54. When, in flight, the needle and a ball of a needle-and-ball indicator are on the right, the aircraft is:

#55. When, in flight, the needle and ball of a needle-and-ball indicator are on the left, the aircraft is:

#56. On the ground, during a left turn, the turn indicator indicates:

#57. On the ground, during a right turn, the turn indicator indicates:

#59. A turn indicator is built around a gyroscope with:

#60. The rate-of-turn is the:

#61. A turn indicator used in conjunction with an attitude indicator will show? 1. Turn direction 2. Rate of turn, 3. Angular velocity about the true vertical axis 4. Angular velocity about the aircraft vertical axis 5. Angular velocity about the longitudinal axis

#62. ROT indications are?

#63. When both the needle and ball of a turn and slip indicator are displaced to the right the aircraft is?

#64. What will be the immediate turn and slip indications when a left engine fails in climbing flight.

#65. When turning at constant bank angle the rate of turn is?

#66. What factors affect the turn indicator? 1. AofA 2.AOB 3. TAS 4. Weight

#67. What are the essential properties of a turn indicator? 1. Two degrees of freedom 2. One degree of freedom 3. Horizontal spin axis 4. Vertical spin axis 5. Longitudinal spin axis

#68. On a TSI what does it indicate when the turn needle is out to the left and the ball out to the right?

#69. What should a turn and slip indicator show in a right turn on the ground?

#70. If the turn and slip indicator shows needle left and ball left in a banked turn, the aircraft is ____ and the required corrective action is ___?

#71. If the turn and slip indicator shows needle left and ball right in a banked turn, the aircraft is ____ and the required corrective actions is_____?

#72. What corrective action is required if the ball is out to the right in a left turn?

#73. If both the ball and needle are out to the left in a turn, the ball can be centralized by?

#74. For a coordinated rate 1 right turn at 250 Kts TAS, in clean configuration the correct AOB is approximately?

#75. For a coordinated rate 1 left turn at an AOB of 27 degrees, the TAS should be?

#76. The gyro in a turn indicator must have ___ gimbal ___ and ___ degrees of freedom?

#77. If the turn indicator needle is out to the right and the ball is out to the left, it indicates?

#78. What angle of bank is required to conduct a balanced rate 1 turn in an aircraft at 125 kts TAS at a mass of 55000 Kg?

#79. If the mass of the aircraft was decreased from 60000 Kg to 45000 Kg?

#80. A turn indicator used in conjunction with an attitude indicator can show? 1. TAS in a turn 2. Direction of turn 3. Angular velocity about the vertical axis of the aircraft. 4. Angular velocity about the true vertical axis

#44. The ball in a serviceable slip indicator is ___ by _ and ___ indicate the state of slip.

#70. If the turn and slip indicator shows needle left and ball left in a banked turn, the aircraft is __ and the required corrective action is _?

#71. If the turn and slip indicator shows needle left and ball right in a banked turn, the aircraft is and the required corrective actions is_?

#76. The gyro in a turn indicator must have _ gimbal _ and ___ degrees of freedom?