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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
A
2500 m
B
3725 m
C
3000 m
D
3250 m
Correct Answer:
3725 m
Consider the following statements regarding ICAO recommendation for correction to basic runway length of these statements
1. The basic runway length should be increased at the rate of 7 percent per 300 m rise in elevation above the mean sea level.
2. The basic runway length after having been corrected for elevation should be further increased at the rate of 1 percent for every 1°C rise in airport reference temperature above the standard atmospheric temperature at that elevation.
3. The runway length after having been corrected for elevation and temperature should be further increased at the rate of 20% for every 1 percent of effective gradient.
A
1 and 2 are correct
B
2 and 3 are correct
C
1 and 3 are correct
D
1, 2 and 3 are correct
A university library budget committee must reduce exactly five of eight areas of expenditure—I, J, K, L, M, N, O and P—in accordance with the following conditions: If both I and O are reduced, P is also reduced.
If L is reduced, neither N nor O is reduced.
If M is reduced, J is not reduced.
Of the three areas J, K, and N exactly two are reduced. Question : If both K and N are reduced, which one of the following is a pair of areas neither of which could be reduced?
A
I, L
B
J, L
C
J, M
D
I, J
The temperature gradient for stratosphere is 0.001 K/m. Assuming the temperature at 20 km above MSL is 216.65 K, what is the temperature at 32 km above MSL?
A
250.17 K
B
215.68 K
C
228.65 K
D
202.12 K
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
A
2500 m
B
2600 m
C
2700 m
D
2800 m
The length of a runway under standard atmospheric conditions is 1800 m. If the actual reduced level of the site is 1200 m, the design length of the runway is
A
2360 m
B
2460 m
C
2560 m
D
2660 m
What will be the acceleration due to gravity at 300 kms above MSL, assuming the gravity at MSL is 9.81 m/s2 and the radius of Earth is 6378 km?
A
99% of gravity at MSL
B
95.5% of gravity at MSL
C
93.2% of gravity at MSL
D
90% of gravity at MSL
The runway length after correcting for elevation and temperature is 2845 m. If the effective gradient on runway is 0.5 percent then the revised runway length will be
A
2845 m
B
2910 m
C
3030 m
D
3130 m
Select the correct answer from the following:
1. Melting of polar ice caps and subsequently rise in the sea level is the most important effect of global warming.
2. The sea level is likely to rise by one meter by 2070 AD if the present level of global warming is not controlled.
3. All the coral islands in the world will be submerged.
4. By 2044 AD, Fiji is likely to be submerged and rise in the sea level by the same year will pose a grave danger to the Netherlands.
A
1, 2, 3 and 4
B
4 only
C
1, 2 and 4
D
1, 2 and 3
Which set of the following events occurs during the elongation step of translation?
P. Attachment of mRNA with the smaller subunit of ribosome
Q. Loading of correct aminoacyl-tRNA into the A site.
R. Formation of a peptide bond between the amino acyl-tRNA in the A site and the peptide chain that is attached to the peptidyl-tRNA in the P site.
S. Dissociation of the ribosomal subunits.
T. Translocation of peptidyl-tRNA from the A site to the P site of the ribosome.
A
P, Q and R
B
P, Q and T
C
Q, R and T
D
R, S and T
Calculate the pressure of air at a height of 3500m from sea level where pressure and temperature of air are 10 N/cm2 and 25℃ respectively. The temperature lapse rate is given as 0.0065 ℃ /m. Take density of air at sea level equal to 1.2 kg/m3.
A
19.7 N/cm2
B
9.85 N/cm2
C
4.93 N/cm2
D
6.24 N/cm2