Q. The frequencies of the primary magnetic field generated by worldwide thunderstorm activity vary in the range (A) 10-6 Hz -10-3 Hz (B) 10-3 Hz -1 Hz (C) 1 Hz -103 Hz (D) 103 Hz -106 Hz Ans: 1 Hz -103 Hz
The frequencies of the primary magnetic field generated by worldwide thunderstorm Read More »
Q. The effect of small scale near surface inhomogeneities can be removed from magnetic data by A. upward continuation. B. downward continuation. C. second vertical derivative. D. reduction to pole. Ans: upward continuation.
Q. Dip angle electromagnetic response measured along a profile over multiple conductors is shown in the figure below. Which of the crossover points P, Q and R represent the CORRECT locations of conductors beneath them? A. P, Q and R B. Q and R C. P and R D. P and Q Ans: P and
Q. Multi-electrode resistivity survey is carried out by placing 10 equispaced electrodes (denoted by arrows in the figure below) on the surface of the earth. The points of observations in the distance-apparent depth plane are marked as solid dots in the figure shown below. Considering the mid-point of the 4-electrode array as the point of
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Q. There is a change in the values of the bulk modulus and density across the Gutenberg discontinuity (from mantle to outer core). Which one of the following statements is CORRECT? A. Both bulk modulus and density increase. B. Both bulk modulus and density decrease. C. Bulk modulus decreases and density increases. D. Bulk modulus
Q. Figure 1 is a schematic diagram of four seismic events in t-x (time-offset) domain and Figure 2 is the result of transformation from t-x domain to f-kx (frequency-horizontal wavenumber) domain. Match the events in t-x domain in Figure 1 with their counterparts in f-kx domain in Figure 2. (A) P-1; Q-2; R-3; S-4 (B)
Q. Which one of the following rock types has the highest bulk magnetic susceptibility value? A. Gabbro B. Marble C. Orthoquartzite D. Limestone Ans: Gabbro
Q. The impulse response of the Kirchhoff pre-stack time migration operator for non-zero offsets in a homogeneous and isotropic medium is (A) a circle. (B) a parabola. (C) a hyperbola. (D) an ellipse. Ans: an ellipse.
Q. The maximum number of linearly independent rows of an m × n matrix G where m > n is (A) m. (B) n. (C) m – n. (D) 0. Ans: n
The maximum number of linearly independent rows of an m × n matrix G where m > n is Read More »
Q. The value of Eh corresponding to the upper limit of natural surface aqueous environment at pH of 8.0 is ____________V. Ans: 0.7-0.8
