GATE-2012 (35)
GATE-2012 35. The distance between the center of the Earth and the barycentre (i.e center of mass of the Earth-Moon system) is (in Km) A) 4510 …
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GATE-2012
GATE-2012 29. Given the frequency of an electromagnetic wave to be 1KHz and ground conductivity to be 10 S/m, calculate the Skin depth.( Give answer in nearest integer , in meters). A) 2 …
GATE-2012 -(30)
GATE-2012 30. Based on acoustic log of a well, the transmit time in a water-bearing sandstone zone is found to be 75μs/ft. The transit time of acoustic wave through the sandstone matrix and…
GATE-2012 (48 & 49)
GATE-2012 A signal having duration of 10 seconds is sampled at a rate of 1000samples per second. The maximum frequency of the sampled signal is 475 Hz . 48. If the signal has been under-sam…
GATE-2012 (26)
GATE-2012 Q.26: The average magnetic susceptibility of dolerite is 1400. What is its magnetic permeability in h/m? (Give answer up to 5 decimal places) A) 0.00176 B) 0.00211 …
GATE-2012 (27)
GATE-2012 27. A small scale seismic reflection survey was conducted with a shot point located at the middle of a 500m long geophone spread. The NMO correction travel times at the end of the spr…
GATE-2012 (34)
GATE-2012 34. For a three-layered Earth with resistivities ρ1, ρ2, ρ3 and corresponding thickness h1, h2 and h3 respectively, the quantity (h1/ ρ1)+(h2/ ρ2)+(h3/ ρ3) stands A) longitud…
GATE-2012 (28)
GATE-2012 28. The S-wave velocity in the lower continental crust is 6800m/s and its density is 3380 kg/m 3 . Find its rigidity in G Pa A) 156.29 G Pa B) 160.21 G Pa C) 162.34 G…
GATE 2012 (8), On a Photo scale of 1:40,000 a square shaped open cast coal mine of 1 km2 area would have an area of ___ cm2.
8) On a Photo scale of 1:40,000 a square shaped open cast coal mine of 1 km 2 area would have an area of ___ cm 2 . (Thanks to Chandrasekhar, ANU) Solution: Given that the scale 1:40,000 …
GATE-2012 Geology Section (26), Calculate the hydraulic conductivity(in m/day).
26) Specific discharge of 1 cm per day is observed in a porous medium where hydraulic head difference is 0.5 m and the flow length is 20 m. calculate the hydraulic conductivity(in m/day). (Thank…
GATE-2012 (54 & 55), The seismic slip of a fault after an earthquake is measured to be 0.5 m and the fault area is estimated to be 250 km2. The rigidity of the medium surrounded the fault is 30 Gpa.
54 and 55) The seismic slip of a fault after an earthquake is measured to be 0.5 m and the fault area is estimated to be 250 km 2 . The rigidity of the medium surrounded the fault is 30 Gpa. Then…
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- free air correction 3
- skin depth problem 3
- acceleration due to gravity as on earth 2
- aliasing 2
- signal processing 2
- undersampling 2
- A gravity survey is conducted over a highly compact ore deposit (spherical shape). Bouguer anomaly values reduced along a profile are given below 1
- A tsunami occurs 1000km away form the shore in an ocean water depth of 6.25km. The tsunami reaches the shore in about 1
- A zero-offset reflection event at 1.00 s has a normal move out (NMO) of 0.005 s at 200 m offset. What is the stacking velocity? 1
- Age of the Carbon-14 1
- Airy 1
- Earth's normal gravity field at Colombo is 1
- Electromagnetic methods 1
- Fresnel zone thickness calculation 1
- Isostasy problem 1
- The Young's modulus (E) 1
- The time period of the signal s(t)= sin(π/3)t + cos(π/2)t is__________seconds. 1
- The units of Dynamic viscosity 1
- The value of free-air correction( assuming sea level as datum plane) at an elevation of 150m is......mGal 1
- What is the lithostatic pressure at the base of a 35 km column of granitic crust with an average density of 2.75 gm/cc ? 1
- Wyllie – Time average equation 1
- Youngs modulus of a rock specimen of density 2.7 gm/cc is 9.72 megabar. The longitudinal wave velocity (in km/s) in the rock is 1
- a thrust dipping 30 degrees caused a vertical uplift of a rock surface by 100m in 20 1
- buoyancy force 1
- calculate maximum usable frequency if critical frequency and angle of incidence is known 1
- dip slip fault is 200m and the dip amount is 30 degrees the throw of the fault is 1
- displacement meter 1
- dix formula interval velocity 1
- drift correction problem 1
- earth and mars density ratios are given 1
- eotvos correction solution 1
- focal length and camera height and flying height given then what is the scale 1
- focal length and scale and flying height given then what is the camera height 1
- foldage formula in seismic 1
- the depth to the reflector in seismic 1
- the quantity (h1/ρ1)+(h2/ρ2)+(h3+ρ3) stands 1
- units of hydraulic conductivity 1