Elements of Remote Sensing MCQ Practice Questions (Civil) Set 3

The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:


Options are :

  • 10^(-8) to 10^(6) m
  • 10^(-10) to 10^(10) m
  • 10^(-10) to 10^(6) m
  • 10^(-8) to 10^(8) m

Answer :10^(-10) to 10^(6) m

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 5

Remote sensing techniques makes use of the properties of-----emitted, reflected or diffracted by the sensed objects:


Options are :

  • Electromagnetic waves
  • Wind waves
  • Electric waves
  • Soundwaves

Answer :Electromagnetic waves

Pick up the correct statement from the following:


Options are :

  • All of these
  • Topological characteristics of an object are independent of scale measurement
  • Topology describes the geometric characteristic of objects which do not change under transformations and are independent of any coordinate system
  • The three elements of topology are adjacency, containment, and connectivity

Answer :All of these

The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:


Options are :

  • 0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 ?m
  • 4.2 to 5.0, 7.0 to 15.0 ?m and 1 cm to 30 cm
  • All of these
  • 2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 ?m

Answer :All of these

Hydraulics MCQ Practice Questions (Civil Engineering) Set 8

Which one the following is a correct statement ?


Options are :

  • The vertical section of the soil extending into the parent material, is called profile
  • All of these
  • The transitional layer between two adjoining horizons, is called boundary
  • The layers of the soil parallel to the earth surface, are called horizons

Answer :All of these

The reflection of solar energy is characterised by the water content in the leaf, in the reflective optical infrared:


Options are :

  • Near-IR (0.7 - 1.3 ?m) region
  • Visible (0.4 - 0.7 ?m) region
  • Short wave-IR (1.3 - 2.7 ?m) region
  • None of these

Answer :Short wave-IR (1.3 - 2.7 ?m) region

Which one of the following relationship between the wave length (?), and frequency and the speed (C) of the electromagnetic wave is correct ?


A.

C = v + ?


B.


C.

C = v?


D.


Options are :

  • B
  • C
  • A
  • D

Answer :C

Hydraulics MCQ Practice Questions (Civil Engineering) Set 10

Which one of the following helps to identify the objects on the earth surface ?


Options are :

  • Atmospheric window
  • None of these
  • Signature
  • Radiometric error

Answer :Signature

Electromagnetic radiation:


Options are :

  • Produces a time varying magnetic field and vice versa
  • All of these
  • Is capable to travel across space
  • Once generated, remains self propagating
  • Consists of magnetic and electric fields

Answer :All of these

The coherence length over which there is a strong relationship between amplitudes is:


Options are :

  • Inversely proportional to the bandwidth
  • Directly proportional to the bandwidth
  • The square of the bandwidth
  • None of these

Answer :Inversely proportional to the bandwidth

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 7

Which one of the following statements is correct regarding the GPS satellites ?


Options are :

  • The inclination of axis satellite is 55
  • All of these
  • The nominal altitude is about 20, 200 km
  • The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)

Answer :All of these

The basic requirement of any sensor system, is:


Options are :

  • Spatial resolution
  • Spectral resolution
  • All of these
  • Temporal resolution
  • Radiometric resolution

Answer :All of these

The various stages occuring in GPS system are described below:

1. Generation of an output to the user

2. Detection of the GPS signal

3. Processing the data in the built-in-computer

4. Decoding the GPS signal

The correct sequence of the stages is:


Options are :

  • 1, 2, 3, 4
  • 2, 3, 4, 1
  • 2, 4, 3, 1
  • 3, 1, 2 , 4

Answer :2, 4, 3, 1

Construction Management MCQ Practice Questions (Civil Eng) Set 1

"An Electromagnetic wave falls on to a boundary between two loss less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media"

This phenomenon is known as:


Options are :

  • Fresnel refraction
  • Snell's law
  • Fresnel reflection
  • None of these

Answer :Fresnel reflection

Pick up the correct statement from the following:


Options are :

  • All of these
  • The force between the magnetic poles is inversely proportional to the permeability of the medium
  • Permeability is expressed as the ratio of the magnetic flux density (B) to the field strength of the magnetizing field
  • Permeability is a measure of the extent to which magnetic lines of force can penetrate a medium
  • Permeability is a measure of conducting the magnetic lines of force in the material

Answer :All of these

If 0 is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to:


Options are :

  • sec^(2)?
  • cos^(2)?
  • tan^(2)?
  • sin^(2)?

Answer :sec^(2)?

Irrigation MCQ Practice Questions (Civil Engineering) Set 3

Pick up the correct statement from the following:


Options are :

  • Water equivalent height of snow is the height of water column obtained by melting snow
  • Spectral albedo of snow is calculated for the semi-infinite snow thickness
  • The ratio of the up flux and down flux just above the snow surface, is called albedo
  • A homogeneous snow pack is one whose average grain size does not vary with depth
  • All of these

Answer :All of these

Pick up the correct statement from the following:


Options are :

  • All of these
  • When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed
  • When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed
  • When the electric vector is in the plane of incidence, vertical polarisation is formed
  • The plane containing the incident ray and normal to the reflecting surface at the point of incidence is called the plane of incidence

Answer :All of these

Which one of the following errors is produced by platform characteristics of the sensor ?


Options are :

  • All of these
  • Orbit drift
  • Altitude
  • Altitude variation

Answer :All of these

Hydraulics MCQ Practice Questions (Civil Engineering) Set 2

Pick up the correct definition from the following with response to GIS:


Options are :

  • The geometric property which describes the linkage between line features is defined as connectivity
  • The area features which are wholly contained within another area feature, is known so containment
  • Common boundry between two areas of a locality is known as adjacency
  • All of these

Answer :All of these

The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:


Options are :

  • Ozone window
  • Ozone hole
  • Atmospheric window
  • Black hole

Answer :Atmospheric window

Coherence of two electromagnetic waves takes place if their phase difference is:


Options are :

  • Constant in time
  • Constant in time and space
  • Constant in space
  • None of these

Answer :Constant in time and space

Concrete Technology MCQ Practice Questions (Civil Eng) Set 5

The value of energy quantum for radiation of any frequency is proportional to:


Options are :

  • The frequency
  • The square of the frequency
  • The square root of the frequency
  • The reciprocal of the energy

Answer :The frequency

A reduction of nitrogen nutrient in plants:


Options are :

  • Increase the visible reflectivity
  • Reduces pigment concentration
  • All of these
  • Affects leaf colour

Answer :All of these

The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface, are called:


Options are :

  • Passive sensors
  • None of these
  • Sensonrs
  • Active sensors

Answer :Active sensors

Irrigation MCQ Practice Questions (Civil Engineering) Set 5

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 ?


Options are :

  • Height displacement of A will be less than that of B
  • Height displacement of A and B is equal
  • Height displacement of B will be less than that of A
  • Height displacement of A and B will be towards each other

Answer :Height displacement of A will be less than that of B

The phase difference of the waves 1 and 2 at A in the given figure is:


Options are :

  • ?/4
  • 3?/2
  • ?
  • ?/2

Answer :?/2

Which one of the following frequency regions is a part of sun's radiation ?


Options are :

  • Radio frequency region
  • All of these
  • Visible frequency region
  • Ultraviolet frequency region
  • Infrared frequency region

Answer :All of these

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 9

Which one of the following statements is correct ?


Options are :

  • During the day, earth reflects solar radiation
  • During the day earth reflects both solar radiation the emission from its surface
  • All of these
  • During the night, earth emits radiation from its surface

Answer :All of these

Pick up the important characteristic of a target which facilitates its identification from the following:


Options are :

  • All of these
  • Spatial variation
  • Polarisation variation
  • Spectral variation
  • Temporal variation

Answer :All of these

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