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The hot tearing in a metal casting is due to: (Gate mechanical 2014 question paper)1 AnswerThe real root of the equation 5x − 2cosx −1 = 0 (up to two decimal accuracy) is ____. (Gate mechanical engineering 2014)1 AnswerA diesel engine has a compression ratio of 17 and cut-off take place at 10% of the stroke. Assuming ratio of specific heats ( γ ) as 1.4, the air-standard efficiency (in percent) is______. (Gate mechanical engineering 2014)1 AnswerMetal content (in metric tonnes) of an ore having specific gravity and assay values of 2.86 and 1.49 % respectively in a mining block 40 m long, 30 m wide and with an average thickness of 2.13 m is _______. (-Gate geology and geophysics 2014)1 AnswerA rrange the following processes in INCREASING magnitude of surface roughness of the casting. P. Investment casting Q. Permanent mould casting R. Pressure die casting S. Sand casting4 AnswerIn a mouse genome, the numbers of functional Vα, Jα, Dβ, Jβ gene segments are 79, 38, 21, 2 and 11, respectively. The total number of possible combination for αβ T cell receptors are ______ x106 . (-Gate Biotechnology 2014 question paper)1 AnswerConsider a population of 10,000 individuals, of which 2500 are homozygotes (PP) and 3000 are heterozygotes (Pp) genotype. The frequency of allele p in the population is ________. (- Gate Biotechnology 2014 question paper)1 AnswerThe degree of reduction of ethanol is ________. (-Gate Biotechnology 2014 question paper)1 AnswerIn any given year, the probability of an earthquake greater than Magnitude 6 occurring in the Garhwal Himalayas is 0.04. The average time between successive occurrences of such earthquakes is ______ years. (-Gate Biotechnology 2014 question paper: Ge1 AnswerIn an affine gap penalty model, if the gap opening penalty is -20, gap extension penalty is -4 and gap length is 8, the gap score is? (-Gate Biotechnology 2014 question paper)1 AnswerConsider a single degree-of-freedom system with viscous damping excited by a harmonic force. At resonance, the phase angle (in degree) of the displacement with respect to the exciting force is:1 AnswerF or sand-casting a steel rectangular plate with dimensions 80 mm × 120 mm × 20 mm, a cylindrical riser has to be designed. The height of the riser is equal to its diameter. The total solidification time for the casting is 2 minutes. In Chvorinov’s law for the estimation of the total solidification time, exponent is to be taken as 2. For a solidification time of 3 minutes in the riser, the diameter (in mm) of the riser is __________ (correct to two decimal places).0 AnswerA cylindrical blind riser with diameter d and height h, is placed on the top of the mold cavity of a closed type sand mold as shown in the figure. If the riser is of constant volume, then the rate of solidification in the riser is the least when the 1 AnswerA pressure die casting set-up was tested by injecting water (density 1000 kg/m3) at a pressure of 200 bar. Mould-filling time was found to be 0.05 s. Afterwards, the actual casting is made by injecting the liquid metal (density 2000 kg/m3) at an injection pressure of 400 bar. Neglect all losses (friction, viscous-effect, etc.). The approximate mould-filling time (in s) is1 AnswerLet G be a group with 15 elements. Let L be a subgroup of G. It is known that L (not equal to) G and that the size of L is at least 4. The size of L is _______. - Gate Computer Science 20141 AnswerExplain centrifugal casting method.1 AnswerIf (𝑧 + 1/𝑧)^2 = 98, compute (𝑧^2 + 1/𝑧^2). - Gate Computer Science 20141 AnswerA manufacturer can produce 12000 bearings per day. The manufacturer received an order of 8000 bearings per day from a customer. The cost of holding a bearing in stock is Rs.0.20 per month. Setup cost per production run is Rs.500. Assuming 300 working1 AnswerChoose the most appropriate word from the options given below to complete the following sentence. (-Gate Biotechnology 2014 question paper: General Aptitude question)1 AnswerA system contains three programs and each requires three tape units for its operation. The minimum number of tape units which the system must have such that deadlocks never arise is _________. (Gate Computer Science 2014)1 Answer
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