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Gate previous year question papers for mechanical

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Re: Gate previous year question papers for mechanical
Here I am providing you gate 2013 mechanical question paper :
Q.12 A metric thread of pitch 2 mm and thread angle 60° is inspected for its pitch diameter using 3wire method. The diameter of the best size wire in mm is (A) 0.866 (B) 1.000 (C) 1.154 (D) 2.000 Q.13 Customers arrive at a ticket counter at a rate of 50 per hr and tickets are issued in the order of their arrival. The average time taken for issuing a ticket is 1 min. Assuming that customer arrivals form a Poisson process and service times are exponentially distributed, the average waiting time in queue in min is (A) 3 (B) 4 (C) 5 (D) 6 Q.14 In simple exponential smoothing forecasting, to give higher weightage to recent demand information, the smoothing constant must be close to (A) 1 (B) zero (C) 0.5 (D) 1.0 Q.15 A steel bar 200 mm in diameter is turned at a feed of 0.25 mm/rev with a depth of cut of 4 mm. The rotational speed of the workpiece is 160 rpm. The material removal rate in mm3/s is (A) 160 (B) 167.6 (C) 1600 (D) 1675.5 Q.16 A cube shaped casting solidifies in 5 min. The solidification time in min for a cube of the same material, which is 8 times heavier than the original casting, will be (A) 10 (B) 20 (C) 24 (D) 40 Q.17 For a ductile material, toughness is a measure of (A) resistance to scratching (B) ability to absorb energy up to fracture (C) ability to absorb energy till elastic limit (D) resistance to indentation Q.18 In order to have maximum power from a Pelton turbine, the bucket speed must be (A) equal to the jet speed. (B) equal to half of the jet speed. (C) equal to twice the jet speed. (D) independent of the jet speed. Q.19 Consider onedimensional steady state heat conduction along xaxis (0 ≤ x ≤ L), through a plane wall with the boundary surfaces (x=0 and x=L) maintained at temperatures of 0°C and 100°C. Heat is generated uniformly throughout the wall. Choose the CORRECT statement. (A) The direction of heat transfer will be from the surface at 100°C to the surface at 0°C. (B) The maximum temperature inside the wall must be greater than 100°C. (C) The temperature distribution is linear within the wall. (D) The temperature distribution is symmetric about the midplane of the wall. If you want to more information about this paper then you can download this pdf file: 
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