Civil Engineering MCQs

2965 MCQs  (Page 220 of 297)

Which one of the following statements regarding remote sensing is correct ?
A. The interaction of the electromagnetic radiation with the target
B. The emission of electromagnetic radiation from the target
C. Both a. and b.
D. Neither a. nor b.
The optical property of a water body depends on ?
A. Absorption by the dissolved material
B. Absorption by the suspended particulate matter
C. Scattering by the suspended particulate matter
D. All of these
Which one of the following statements is correct regarding the GPS satellites ?
A. The nominal altitude is about 20,200 km
B. The inclination of axis satellite is 55°
C. The satellite transmits two l band signals (l1 with 1575.42 mhz and l2 with 1276.6 mhz)
D. All of these
A reduction of nitrogen nutrient in plants_______________?
A. Affects leaf colour
B. Reduces pigment concentration
C. Increase the reflectivity
D. All of these
Which one of the following statement is incorrect regarding the electromagnetic radiation ?
A. These are produced by the motion of electric charge
B. The oscillation of charged particles sets up changing electric fields
C. The changing electric fields induce the changing magnetic fields in the surrounding medium
D. None of these
The changes in the reflectivity/emissivity with time, is called ?
A. Spectral variation
B. Spatial variation
C. Temporal variation
D. None of these