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G-NAV Practise

Practise Test.

 

 

GNav PRACTISE TEST.

 

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Contact : Capt.Louis Lobo 9004751779

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1 / 130

An aircraft is flying around the Earth eastwards along the 60N parallel of latitude

at a ground speed of 360 knots. At what ground speed would another aircraft have to fly eastwards along the Equator to fly once round the Earth in the same journey time?

2 / 130

Pressure Altitude is 28 000 feet, OAT = -45°C, Mach No = 0.46, W/V = 270/85, Track = 200°T. What is the drift and groundspeed?

3 / 130

What is the highest latitude listed below at which the Sun will rise above the horizon and set every day?

4 / 130

Heading is 156°(T), TAS is 320 knots, W/V is 130/45 and the Variation is 10°W. What is your magnetic track?

5 / 130

On a Lambert chart, the convergence factor is .78585. What is the parallel of tangency?

6 / 130

What is the duration of civil twilight?

7 / 130

At what times of the year does the length of the hours of daylight change most rapidly?

8 / 130

G/S = 240 knots, Distance go = 530 NM. What is time to go?

9 / 130

How many nautical miles are travelled in 1 minute 45 seconds at a ground speed of 135 knots?

10 / 130

Given:

Airport elevation is 1000 feet.

QNH is 988 hPa

What is the approximate airport pressure altitude?

11 / 130

Civil Twilight occurs between:

12 / 130

Given:

Magnetic heading 311°

Drift is 10° left

Relative bearing of NDB 270. What is the magnetic bearing of the NDB measured from the aircraft?

13 / 130

Isogonal lines converge as follows:

14 / 130

The agonic line:

15 / 130

At 0422 you are 185 NM from a VOR at FL370. You need to descend at a mean

descent rate of 1800’/min to be at FL80 overhead the VOR. Your ground speed in

the level cruise is currently 320 knots. In the descent your mean G/S will be 232 knots. What is the latest time to commence descent?

16 / 130

Please refer to Appendix A.

What is the chart symbol for a lightship?

17 / 130

What is the reason for seasonal changes in climate?

18 / 130

What is the definition of magnetic variation?

19 / 130

You fly from 49N to 58N along the 180 E/W meridian. What is the distance in kilometres?

20 / 130

Fuel flow per hr is 22 US.gal, total fuel on board is 83 imp.gal. What is the endurance?

21 / 130

On a Lambert’s chart the constant of the cone is 0.80. A is at 53N 04W. You plan

to fly to B. The initial Lambert’s chart straight-line track is 070(T) and the rhumb line track from A to B is 080(T). What is the longitude of B?

22 / 130

An aircraft is at FL140 with an IAS of 210 and a true OAT of -5°(C). The wind

component is -35 knots. When the aircraft is at 150 NM from a reporting point,

ATC request the crew to lose 5 minutes by the time they get to the beacon. How much do they need to reduce IAS?

23 / 130

Your pressure altitude is FL55, the QNH is 998, and the SAT is +30°(C). What is density altitude?

24 / 130

The value of variation

25 / 130

A compass swing is performed in order to correct for:

26 / 130

On which chart projection is it not possible to show the North Pole?

27 / 130

The chart that is generally used for navigation in polar areas is based on a:

28 / 130

You are on an ILS 3-degree glide slope which passes over the runway threshold at

50 feet. Your DME range is 25 NM from the threshold. What is your height above

the runway threshold elevation? (Use the 1 in 60 rule and 6000 feet = 1 nautical mile)

29 / 130

The angle between the true great circle track and the true rhumb line track joining

the following points: A (60S 165W) and B (60S 177E) at the place of departure A?

30 / 130

An aircraft at FL370 is required to commence descent at 120 NM from a VOR and to

cross the facility at FL130. If the mean GS for the descent is 288 kt, the minimum rate of descent required is:

31 / 130

What is the weight in kilograms of 380 US Gallons at a Specific Gravity of 0.78?

32 / 130

Grivation is the combination of

33 / 130

A useful method of a pilot resolving, on a visual flight, any uncertainty in the aircraft’s position is to maintain visual contact with the ground and:

34 / 130

An aircraft homing to a VOR/DME loses 2500 feet in 11.1 NM change of DME range.

What is the gradient of the slope?

35 / 130

 

Given: Track 198°, Heading 184°, TAS 427 kt and GS 453kt, what are the W/V and Drift Angle?

36 / 130

A Lambert’s Conical conformal char

37 / 130

The pressure alt is 29 000 feet and the SAT is -55°(C). What is density altitude?

38 / 130

Given: Aircraft height = 2500 feet, ILS GP angle = 3°, at what approximate distance from the threshold can you expect to intercept the glide-path?

39 / 130

An aircraft departs a point 0400N 17000W and flies 240 NM South, followed by 240 NM East, then 240 NM North, then 240 NM West. What is its final position?

40 / 130

At what latitude does the maximum difference between geodetic and geocentric latitude occur?

41 / 130

On a chart, 90.74 km is represented by 7.0 centimetres. What is the scale?

42 / 130

By what amount must you change your rate of descent given a 10 knot decrease in headwind on a 3° glide slope?

43 / 130

5 hours 20 minutes and 20 seconds time difference is equivalent to which change of longitude?

44 / 130

On a particular direct Mercator wall chart, ‘the full length of the parallel of latitude at 53N is 133 cm long. What is the scale of the chart at 30S?

45 / 130

You are flying 090°(C) heading. Deviation is 2W and Variation is 12E. Your TAS is 160 knots. You are flying the 070 radial outbound from a VOR and you have gone 14 NM in 6 minutes. What is the W/V?

46 / 130

What is the highest latitude on the Earth at which the Sun can be vertically overhead?

47 / 130

Required course 045°(T), W/V = 190 /30, FL = 55 @ ISA, Variation = 15°W. CAS = 120 knots. What is mag heading and G/S?

48 / 130

What rate of descent is required to maintain a 3.5° glide slope at a ground speed of 150 knots?

49 / 130

Position A is at 70S 030W, position B is 70S 060E. What is the great circle track of B from A, measured at A?

50 / 130

Isogonals are lines of equal:

51 / 130

The value of magnetic variation on a chart changes with time. This is due to

52 / 130

On a 5% glide slope your groundspeed is 150 kt. What should be your rate of descent to maintain the glide slope?

53 / 130

On a particular take-off, you can accept up to 10 knots tailwind. The runway QDM

is 047, the variation is 17°E and the ATIS gives the wind direction as 210. What is the maximum wind strength you can accept?

54 / 130

At the magnetic equator

55 / 130

In which months is the difference between apparent noon and mean noon the greatest?

56 / 130

What is a line of equal grivation?

57 / 130

An aircraft leaves at 0900UTC on a 250 NM journey with a planned ground speed

of 115 knots. After 74 NM the aircraft is 1.5 minutes behind the planned schedule. What is the revised ETA at the destination?

58 / 130

Which of these is a correct statement about the Earth’s magnetic field?

59 / 130

An aircraft at position 0000N/S 16327W flies a track of 225°(T) for 70 NM. What is its new position?

60 / 130

An aircraft flies a great circle track from 56°N 070°W to 62°N 110°E. The total distance travelled is:

61 / 130

You are heading 345°(M), the variation is 20°E, and you take a radar bearing of 30° left of the nose from an island. What bearing do you plot from the island?

62 / 130

The sensitivity of a direct reading magnetic compass is:

63 / 130

The angle between the plane of the Equator and the plane of the Ecliptic is:

64 / 130

In which month does aphelion occur?

65 / 130

Given:

IAS 120 kt

FL80

OAT +20°(C)

What is the TAS?

66 / 130

An aircraft at position 60°N 005°W tracks 090°(T) for 315 km. On completion of the flight the longitude will be:

67 / 130

On the Polar Stereographic projection, a great circle appears as:

68 / 130

Given: Position A is 60N 020W, Position B is 60N 021W, and Position C is 59N 020W, what are, respectively, the distances from A to B and from A to C?

69 / 130

What is the maximum possible value of Dip Angle at either Pole?

70 / 130

At 1000 hours an aircraft is on the 310 radial from a VOR/DME, at 40 nautical miles

range. At 1015 the radial and range are 040/40 NM. What is the aircraft’s track and ground speed?

71 / 130

Lines of latitude on a chart are always

72 / 130

The orbit of the Earth round the Sun is elliptical. An ellipse has 2 foci. Which of the following is a correct statement?

73 / 130

Given that the value of ellipticity of the Earth is 1/297 and that the semi-major axis

of the Earth, measured at the axis of the Equator is 6378.4 km, what is the semi- minor axis of the Earth measured at the axis of the Poles?

74 / 130

Given: Runway direction 083°(M), Surface W/V 035/35 kt. Calculate the effective crosswind component.

75 / 130

What is the dip angle at the North Magnetic Pole?

76 / 130

Convert 80 metres/sec into knots.

77 / 130

 

Given: True course 300°

Drift 8°R

Variation 10°W

Deviation -4°

Calculate the compass heading.

78 / 130

 

During a low level flight 2 parallel roads are crossed at right angles by an aircraft. The time between these roads can be used to check the aircraft:

79 / 130

The angle between True North and Magnetic North is known as:

80 / 130

An aircraft flies 100 stat.m in 20 minutes. How long does it take to fly 215 NM?

81 / 130

Position A is 55N 30W. Position B is 54N 20W. The great circle track from A to B, measured at A, is 100°(T). What is the rhumb line bearing from A to B?

82 / 130

An aircraft’s compass must be swung:

83 / 130

Where is a compass most effective?

84 / 130

An aircraft is flying at FL200, the OAT is 0°C. When the actual air pressure on an

airfield at MSL is placed on the subscale of the altimeter the indicated altitude is 19 300 ft. What is the aircraft’s True Altitude?

85 / 130

Given: FL350, Mach 0.80, OAT -55°(C), calculate values for TAS and LSS

86 / 130

‘ISA Dev = +30°C, Pressure alt = 5000 feet. What is true alt?

87 / 130

Please refer to Appendix A. What does symbol 9 represent?

88 / 130

At 65 NM from a VOR you commence a descent from FL330 in order to arrive over the VOR at FL80. Your mean ground speed in the descent is 240 knots. What rate of descent is required?

89 / 130

An aircraft at position 2700N 17000W travels 3000 km on a track of 180°(T), then

3000 km on a track of 090°(T), then 3000 km on a track of 000°(T), then 3000 km on a track of 270°(T). What is its final position?

90 / 130

On a chart, meridians at 45N are shown every 10 degrees apart. This is shown on the chart by a distance of 14 cm. What is the scale?

91 / 130

Given: For take-off an aircraft requires a headwind component of at least 10 kt

and has a cross-wind limit of 35 kt. The angle between the wind direction and the runway is 45°. Calculate the maximum and minimum allowable wind speeds.

92 / 130

The scale on a Lambert’s conformal conic chart

93 / 130

A Lambert conformal conic chart has a constant of the cone of 0.80.

A straight line course drawn on this chart from A (53°N 004°W) to B is 080° at A; course at B is 092°. What is the longitude of B?

94 / 130

The main reason that day and night, throughout the year, have different durations is due to the:

95 / 130

An island is observed to be 15°(T)o the left.

The aircraft heading is 120°(M), variation 17°(W).

The bearing (°T) from the aircraft to the island is:

96 / 130

You are heading 080°(T) when you get a range and bearing fix from your AWR on a headland at 185 NM 30° left of the nose. What true bearing do you plot on the chart?

97 / 130

What is the meaning of the term ‘standard time’?

98 / 130

Given: Runway direction 083°(M), Surface W/V 045/35 kt. Calculate the effective headwind component.

99 / 130

If variation is East, then

100 / 130

What is the formula for conversion angle?

101 / 130

You are homing to overhead a VORTAC and will descend from 7500 QNH to be

1000 AMSL by 6 NM DME. Your ground speed is 156 knots and the ROD will be 1000 feet/min. At what range from the VORTAC do you commence the descent?

102 / 130

On a direct Mercator chart, a rhumb line appears as a

103 / 130

An aircraft is at 10°N and is flying North at 444 km/hour. After 3 hours the latitude is

104 / 130

What is the chart convergence factor on a Polar Stereographic chart?

105 / 130

Given:

TAS = 485 kt, OAT = ISA +10°C, FL410. Calculate the Mach Number.

106 / 130

How do rhumb lines (with the exception of meridians) appear on a Polar Stereographic chart?

107 / 130

What is the rhumb line track from A (4500N 01000W) to B (4830N 00500W)?

108 / 130

You leave A to fly to B, 475 NM away, at 1000 hours. Your ETA at B is 1130. At

1040, you are 190 NM from A. What ground speed is required to arrive on time at B?

109 / 130

An aircraft at position 8500N 02000E flies a rhumb line track of 075°(T). What will be its path over the Earth?

110 / 130

The distance between two waypoints is 200 NM.

To calculate compass heading the pilot used 2°E magnetic variation instead of 2°W.

Assuming that the forecast W/V applied, what will the off track distance be at the second waypoint?

111 / 130

Ground speed is 540 knots. 72 NM to go. What is time to go?

112 / 130

Your position is 5833N 17400W. You fly exactly 6 NM westwards. What is your new position?

113 / 130

Given: Heading 165(M), Variation 25W, Drift 10°R, G/S 360 knots. At ‘A’ your

relative bearing to an NDB is 325R. Five minutes later, at ‘B’, the relative bearing is 280(R). What is the true bearing and distance from ‘B’ to the NDB?

114 / 130

Isogrivs are lines that connect positions that have:

115 / 130

What is the effect on the Mach number and TAS in an aircraft that is climbing with constant CAS?

116 / 130

An aircraft starts at position 0410S 17822W and heads true north for 2950 NM,

then turns 90 degrees right, and maintains a rhumb line track for 314 kilometres. What is its final position?

117 / 130

A-C = 50nm (A-B = 30nm, B-C=20nm)

ATA A is 1010. ETA B is 1030. ETA C is 1043.

ATA B is 1027. What is revised ETA C?

118 / 130

What is the diameter of the Earth?

119 / 130

The relative bearing to a beacon is 090°R. Three minutes later, at a ground speed

of 180 knots, it has changed to 135°R. What was the distance of the closest point of approach of the aircraft to the beacon?

120 / 130

What is the shortest distance between Point ‘A’ (3543N 00841E) and Point ‘B’ (5417N 17119W)?

121 / 130

You are at FL150 and the SAT is -5°(C). You are over an airport with an elevation of 720 feet. The QNH is 1003. Assume 27 feet = 1 hPa. What is your true height?

122 / 130

Course 040°(T), TAS 120 kt, Wind speed = 30 knots. From which direction will the wind give the greatest drift?

123 / 130

The rhumb line distance between points A (60°00’N 002°30’E) and B (60°00’N 007°30’W) is:

124 / 130

An aircraft is at 5530N 03613W, where the variation is 15W. It is tuned to a VOR located at 5330N 03613W, where the variation is 12W. What VOR radial is the aircraft on?

125 / 130

On a conformal chart, the standard parallels are 41° 20’N and 11° 40’N. What is the constant of the cone?

126 / 130

The distance A to B is 90 NM in a straight line. You are 60 NM from A when you fix

your position 4 NM to the left of track. What correction do you need to make to arrive at B?

127 / 130

TAS = 240 knots. Track is 180°(T). The relative bearing from an NDB is 315(R) at 1410. At 1420 the bearing has changed to 270(R). What is your distance from the NDB at 1420?

128 / 130

How does scale change on a normal Mercator chart?

129 / 130

On a direct Mercator chart, great circles are shown as

130 / 130

A rhumb line is:

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