civil engineering MCQs – Page 295

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 Review each marked answer and report any item that may be outdated or unclear.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
5881. A and B are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?
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A. Height displacement of B will be less than that of A

B. Height displacement of A will be less than that of B

C. Height displacement of A and B is equal

D. Height displacement of A and B will be towards each other

5882. Which one of the following geometric errors of satellite sensors is random ?
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A. Earth rotation

B. Altitude variation

C. Scan skew

D. Panoramic distortion

5883. Which one of the following errors is produced by platform characteristics of the sensor ?
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A. All of these

B. Altitude variation

C. Altitude

D. Orbit drift

5884. The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called________________?
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A. None of these

B. Passive sensors

C. Active sensors

D. Sensors

5885. Pick up the correct statement from the following ?
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A. All of these

B. The refractive index of a medium varies according to the wavelength of the radiation,

C. The splitting of colours of white light by passing through a prism is caused due to dispersion

D. The variation of the refractive index with wave length, is called dispersion,

5886. Leaf reflectance depends primarily on______________?
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A. The pigments

B. Internal cell structur

C. All of these

D. Equivalent water content

5887. Which one of the following statements is correct regarding the GPS satellites ?
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A. All of these

B. The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)

C. The nominal altitude is about 20,200 km

D. The inclination of axis satellite is 55

5888. Pick up the correct statement from the following ?
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A. Platforms may be either stationary or mobile

B. All of these

C. In remote sensing technique, the observation place, is called a platform

D. Spatial resolution of the imaging system becomes poorer with increase of platform height

5889. Pick up the correct statement from the following ?
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A. Indian space effort started in 1962 with the establishment of a rocket

B. Indian Space Research Organisation (ISRO) is responsible for the space technology and its application to various activities

C. All of these

D. Development of space (DOS) was established by the Government of India in 1972

5890. Electromagnetic radiation_______________?
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A. Produces a time varying magnetic field and vice versa

B. Is capable to travel across space

C. Once generated, remains self-propagating

D. All of these
5891. The object of photo-interpretation is__________________?
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A. Identification

B. All of these

C. Recognition of objects

D. Judging the significance of objects

5892. Pick up the important characteristic of a target which facilitates its identification from the following ?
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A. Temporal variation

B. Spectral variation

C. Spatial variation

D. All of these
5893. Pick up the correct statement from the following?
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A. An increase of phytoplankton absorbs the bule region rapidly

B. Phytoplankton contains photosynthetically active pigment

C. An increase of phytoplankton decreases the back scattering in the green region

D. An increase of phytoplankton increases the back scattering in the green region

5894. According to the Snells law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index m2)________________?
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A. The angle of incidence is equal to the angle of refraction

B. The angle of refraction r) is given by sin i

C. Both A. and B.

D. Neither A. nor B.

5895. Remote sensing techniques make use of the properties of ______________ emitted, reflected or diffracted by the sensed objects?
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A. Electric waves

B. Wind waves

C. Electromagnetic waves

D. Sound waves

5896. Which one of the following attributes is not associated with digital maps_______________?
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A. Legends

B. Symbology

C. South arrow

D. Colour

5897. The coherence length over which there is a strong relationship between amplitudes is_________________?
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A. None of these

B. Inversely proportional to the bandwidth

C. The square of the bandwidth

D. Directly proportional to the bandwidth

5898. Pick up the correct statement from the following ?
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A. For the same feature, the photograph taken from the satellite vertically above the aircraft, the height displacement is lesser than the aerial photograph

B. The scale of the aerial photograph depends upon the scale of the topography

C. The feature at the principal point has no height displacement

D. All of the above
5899. Which one of the following residual biases involves the GPS accuracy ?
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A. Satellite dependent biases due to uncertainty in the orbital parameters of the satellite

B. Receiver -dependent biases due to clock stability with line

C. All the above

D. Signal propagation biases due to the sphere and troposphere propagation

5900. A passive sensor uses ________________?
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A. Flash light as a source of energ

B. Its own source of energy

C. Sun as the source of energy

D. None of these