The depressions and undulations in the pavement, are caused due to
Improper compaction of sub-grade
Impact of heavy wheel loads
Punching effect
All the above
Correct Answer :
D. All the above
Related Questions
Pick up the correct abbreviation from the following:
L.M.M. (low powered middle marker)
V.H.F, (very high frequency)
L.O.M. (low powered outer marker)
All the above
An airport has 4 gates. If the weighted average gate occupancy time is 30 minutes and gate utilisation factor is 0.5, then the capacity of the gate will be
1 aircraft per hour
2 aircrafts per hour
4 aircrafts per hour
16 aircrafts per hour
If the width of the approach area near the runway end is 150 m, the width of the approach area at a distance of 3 kilometres from runway end will be
1500 m
1200 m
1000 m
800 m
If lift off distance of an craft is 2000 m, the clear way at the end of the runway should not be less than
145 m
152.5 m
162.5 m
172.5 m
For Class A Air port the difference of reduced levels of higher and lower edges of the conical surface, is
25 m
50 m
75 m
100 m
Wing loading of an aircraft is
Load of the wings
Gross total weight of the aircraft/ load of the wings
Gross total weight of the aircraft/ wing area
Gross total weight of the aircraft/total available H.P of engines
The length of runway under standard conditions is 2000 m. The elevation of airport site is 300 m. Its reference temperature is 33.05°C. If the runway is to be constructed with an effective gradient of 0.25 percent, the corrected runway length will be
2500 m
2600 m
2700 m
2800 m
Castor angle is defined as the angle
Formed by the longitudinal axis of the aircraft and the direction of movement of the nose gear
Between the direction of wind and the longitudinal axis of the runway
Between the true speed of the aircraft and the crosswind component
Between the horizontal and the fuselage axis
In Intrumental landing system, the middle markers are located
Along the extended centre line of runway end
About 1 km. ahead of the runway threshold
At the runway threshold
About 7 km. ahead of the runway threshold
Pick up the correct statement from the following:
Approach zone survey is carried out to determine the elevations of the protruding obstructions above horizontal, conical and transitional surfaces
The wind data of an air port is depicted in the form of a chart known as wind rose
The landing and takeoff of the air craft is made against the wind direction
All the above
The reduced level of the proposed site of an air port is 2500 m above M.S.L. If the recommended length by I.C.A.O. for the runway at sea level is 2500 m, the required length of the runway is
2500 m
3725 m
3000 m
3250 m
Assertion A : The ratio of arriving and departing aircrafts influences the airport Capacity: Reason R : Landing operation is generally given priority over the taking off operation. Select your answer based on the coding system given below:
Both A and R is true and R is the correct explanation of A
Both A and R is true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
Which of the following factors are taken into account for estimating the runway length required for aircraft landing?
1. Normal maximum temperature
2. Airport elevation
3. Maximum landing weight
4. Effective runway gradient Select the correct answer using the codes given below Codes:
1, 2, 3 and 4
1, 3 and 4
2 and 3
1, 2 and 4
The lift off distance is the distance along the centre of the runway between the starting point and
End of the runway
End of stop-way
Point where air craft becomes air borne
Point where air craft attains a height of 10.7 m
Pick up the correct statement from the following:
The speed of the aircraft relative to the ground, is called cruising speed
The speed of the aircraft relative to wind, is called air speed
When wind is blowing the direction of the flight, air speed is less than cruising speed
All the above
Effective length of a runway is the distance between
Ends of the runway
Point of intersection of the obstruction clearance line and the extended plane of the runway surface, and the other end of the runway
Point of intersection of the glide path and the extended plane of the runway surface and the other end of the runway
Ends of the clear way on either side
For the proposed air port, the survey project provides
Master plan
Topographic plan
Grading plan
All the above
For determining the basic runway length, the landing case requires that aircraft should come to a stop within p % of the landing distance. The value of p is
40 %
50 %
60 %
75 %
The depressions and undulations in the pavement, are caused due to
Improper compaction of sub-grade
Impact of heavy wheel loads
Punching effect
All the above
Pick up the incorrect statement from the following:
L.O.M. is installed at 7.2 km from the threshold
L.M.M. is installed at 1.0 km from the threshold
Localizer antenna is installed at 300 m from the other end of the runway
Glide slope antenna is installed at the centre of the runway about 150 m on one side
As per ICAO, the minimum basic runway length for A and E type of airport will be
1500 m and 600 m
2100 m and 750 m
1500 m and 750 m
2100 m and 600 m
The width and interval of transverse centre line bars along the extended centre line of runway, in approach lighting system are
3 m and 30 m
4.2 m and 30 m
4.2 m and 50 m
3 m and 45 m
Assertion A: The width of a taxiway is smaller than the runway width. Reason R: The speed of the aircraft on a taxiway is greater than that on runway. Select your answer based on coding system given below
Both A and R is true and R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
The air is blowing at a speed of 75 knots in the direction of the aircraft flying at a ground speed of 775 knots. The air speed of the aircraft, is
775 knots
75 knots
850 knots
675 knots
The reduced levels of the ends A and B of a runway are 3025 m and 3035 m and that of its mid-point is 3015 m. The reduced level of the horizontal surface, is
3070 m
3060 m
3075 m
3015 m
As per ICAO, for A, B, and C type of airports, maximum effective, transverse and longitudinal grades in percentage respectively are
1.0, 1.5 and 1.5
1.0, 1.5 and 2.0
1.5, 1.5 and 2.0
2.0, 2.0 and 2.0
According to the International Civil Aviation Organisation (I.C.A.O.), the runway lengths of aerodromes, have been coded by
Seven English alphabets
Last Seven English alphabets
First Seven English alphabets
First seven natural numbers
The maximum value of the angle of turning of the nose gear large jet aircrafts, is limited to
20°
30°
45°
60°
The bearing of the runway at threshold is 290°, the runway number is
N 70° W
290°
29°
W 20° N
As per ICAO, for airports serving big aircrafts, the crosswind component should not exceed
15 kmph
25 kmph
35 kmph
45 kmph