Geophysical Methods in Engineering MCQs Questions & Answers | Geological Engineering Page-7 section-1

61.
Which geophysical method is best suited for locating buried metallic objects?

A. Electromagnetic method

B. Gravity survey

C. Resistivity method

D. Seismic reflection

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62.
The unit of gravitational acceleration used in gravity surveys is:

A. m/s�

B. Gal

C. Newton

D. Pascal

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63.
Which geophysical method measures variations in the Earth�s gravitational field?

A. Magnetic method

B. Seismic method

C. Gravity method

D. Resistivity method

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64.
Which of the following is a limitation of Ground Penetrating Radar (GPR)?

A. Cannot detect voids

B. Poor resolution

C. Ineffective in clay-rich soils

D. Unsafe for operators

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65.
What does VES stand for in electrical resistivity surveys?

A. Vertical Electrical Survey

B. Variable Electrode Survey

C. Vertical Electrical Sounding

D. Verified Electromagnetic Scan

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66.
Which method is most commonly used for detecting cavities or sinkholes?

A. Seismic reflection

B. Electrical resistivity

C. Gravity survey

D. GPR

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67.
Which parameter does a magnetic survey primarily measure?

A. Rock porosity

B. Subsurface temperature

C. Magnetic susceptibility

D. Seismic velocity

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68.
A sharp decrease in resistivity in a resistivity profile often indicates:

A. Rock outcrop

B. Dry sand

C. Saturated clay

D. Compact gravel

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69.
Which of the following best describes �refraction� in seismic studies?

A. Bending of waves at interfaces

B. Reflection from subsurface layers

C. Absorption by soft rocks

D. Noise from surface traffic

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70.
Gravity anomalies caused by low-density features are:

A. Positive anomalies

B. Negative anomalies

C. Static anomalies

D. Neutral anomalies

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Geophysical Methods in Engineering MCQs Questions & Answers | Geological Engineering

61. Which geophysical method is best suited for locating buried metallic objects?

Answer & Solution

62. The unit of gravitational acceleration used in gravity surveys is:

Answer & Solution

63. Which geophysical method measures variations in the Earth�s gravitational field?

Answer & Solution

64. Which of the following is a limitation of Ground Penetrating Radar (GPR)?

Answer & Solution

65. What does VES stand for in electrical resistivity surveys?

Answer & Solution

66. Which method is most commonly used for detecting cavities or sinkholes?

Answer & Solution

67. Which parameter does a magnetic survey primarily measure?

Answer & Solution

68. A sharp decrease in resistivity in a resistivity profile often indicates:

Answer & Solution

69. Which of the following best describes �refraction� in seismic studies?

Answer & Solution

70. Gravity anomalies caused by low-density features are:

Answer & Solution

61.
Which geophysical method is best suited for locating buried metallic objects?

62.
The unit of gravitational acceleration used in gravity surveys is:

63.
Which geophysical method measures variations in the Earth�s gravitational field?

64.
Which of the following is a limitation of Ground Penetrating Radar (GPR)?

65.
What does VES stand for in electrical resistivity surveys?

66.
Which method is most commonly used for detecting cavities or sinkholes?

67.
Which parameter does a magnetic survey primarily measure?

68.
A sharp decrease in resistivity in a resistivity profile often indicates:

69.
Which of the following best describes �refraction� in seismic studies?

70.
Gravity anomalies caused by low-density features are: