civil engineering MCQs – Page 296

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs

5901. Which one of the following parameters is considered to determine the reflectance of a vegetation canopy ?
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A. Solar zenith angle

B. All of these

C. Azimuth angle

D. Look angle

5902. Critical angle of electromagnetic radiation takes place if__________________?
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A. Angle of incidence is equal to 90

B. Angle of incidence is equal to angle of refraction

C. Angle of incidence is greater than the angle of refraction

D. Angle of refraction is equal to 90

5903. Pick up the correct statement from the following_________________?
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A. All of these

B. When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed

C. When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed

D. When the electric vector is in the plane of incidence, vertical polarisation is formed

5904. Pick up the correct statement from the following?
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A. Frequency of a wave is measured in Hertz (Hz)

B. Amplitude of a wave is the height of its crust from the mid-point

C. Frequency is the number of wave crests passing a fixed point in one second

D. All of these

5905. The value of energy quantum for radiation of any frequency is proportional to________________?
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A. The reciprocal of the energy

B. The square of the frequency

C. The square root of the frequency

D. The frequency

5906. The changes in the reflectivity/emissivity with time, is called ?
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A. Temporal variation

B. None of these

C. Spectral variation

D. Spatial variation

5907. Geodimeter is based on_________________?
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A. The visible light as carrier with frequency of the order of 5 1014 Hz

B. Propagation of modulated light waves

C. Propagation of infrared radiation

D. High frequency radio waves

5908. In case of reflection and refraction of electromagnetic radiation ?
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A. Angle of incidence = angle of refraction

B. Angle of refraction = sum of the angles of incidence and refraction

C. All the above

D. Angle of incidence = angle of reflection

5909. Which one of the following statement is incorrect regarding the electromagnetic radiation ?
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A. The oscillation of charged particles sets up changing electric fields

B. These are produced by the motion of electric charge

C. The changing electric fields induce the changing magnetic fields in the surrounding medium

D. None of these

5910. For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is______________?
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A. Sun-synchronous orbit

B. None of these

C. Near polar orbit

D. Circular orbit

5911. The altitudinal distance of a geostationary satellite from the earth is about_________________?
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A. 30,000 km

B. 44,000 km

C. 26,000 km

D. 36,000 km

5912. Orbital radius of GPS satellites is approximately ___________________?
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A. 26,600 km

B. 36,000 km

C. 15,200 km

D. 18,400 km

5913. The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as__________________?
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A. Ozone hole

5914. Which one of the following statement is correct ?
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A. All of these

B. The rate of transfer of radiant energy is called flux and is expressed in watts

C. The radiant energy which falls upon a surface is termed as irradiance

D. Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation

5915. Consider the following statements regarding the satellite imaging_________________?
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A. During successive across-track imaging, the earth rotates beneath the sensor

B. The satellite orbit is fixed in the inertial space

C. The satellite images a skewed area</strong>

D. ch one of the following statements is/are correct?

5916. A reduction of nitrogen nutrient in plants_______________?
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A. All of these

B. Reduces pigment concentration

C. Increase the visible reflectivity

D. Affects leaf colour

5917. Pick up the correct statement from the following ?
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A. The three elements of topology are adjacency, containment, and connectivity

B. All of these

C. Topological characteristics of an object are independent of scale measurement

D. Topology describes the geometric characteristic of objects which do not change under transformations and are independent of any coordinate system

5918. Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its_______________________?
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A. Six ground stations

B. Three ground stations

C. Four ground stations

D. Five ground stations

5919. Pick up the correct statement from the following?
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A. The ratio of the up flux and down flux just above the snow surface, is called albedo

B. All of these

C. Spectral albedo of snow is calculated for the semi-infinite snow thickness

D. Water equivalent height of snow is the height of water column obtained by melting snow

5920. The basic requirement of any sensor system is___________________?
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A. Radiometric resolution

B. Spatial resolution

C. Spectral resolution

D. All of these

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