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During normalizing process of steel, the specimen is heated -Mechanical Engineering-gate-20121 AnswerA steel is plastically worked in the temperature range below the nose of the TTT curve and above Ms, followed by quenching to produce fine martensite. What is this process called?5 AnswerA tensile specimen was deformed to a true strain of 0.405. The change in the gauge length was 5 mm. The final gauge length of the specimen, in mm, is: (-Gate metallurgical engineering 2014)1 AnswerA bimetallic cylindrical bar of cross sectional area 1 m2 is made by bonding Steel and Aluminium as shown in the figure. To maintain tensile axial strain of magnitude 6 10 in Steel bar and compressive axial strain of magnitude 6 10 in Aluminum bar, the magnitude of the required force P (in kN) along the indicated direction is (Gate 2018 Mechanical engineering)0 AnswerA plane slab of thickness L and thermal conductivity k is heated with a fluid on one side (P), and the other side (Q) is maintained at a constant temperature, TQ of 25C, as shown in the figure. (Gate 2018 Mechanical engineering) 0 Answer (Gate 2018 Mechanical engineering)A steel column of rectangular section (15 mm × 10 mm) and length 1.5 m is simply supported at both ends. Assuming modulus of elasticity, E = 200 GPa for steel, the critical axial load (in kN) is ____0 AnswerThe real root of the equation 5x − 2cosx −1 = 0 (up to two decimal accuracy) is ____. (Gate mechanical engineering 2014)1 AnswerIn a steel plate with bolted connections, the rupture of the net section is a mode of failure under -Civil Engineering-gate-20121 AnswerMatch the following products with the suitable manufacturing process (Gate 2018 Mechanical engineering)0 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 AnswerA steel wire is drawn from an initial diameter (di) of 10 mm to a final diameter (df) of 7.5 mm. The half cone angle () of the die is 5 and the coefficient of friction () between the die and the wire is 0.1. (Gate 2018 Mechanical engineering)0 AnswerThe contents of a well-insulated tank are heated by a resistor of 23Ω in which 10A current is flowing. -gate-mechanical-20111 AnswerIf AIV for specimen A is 25 and that for specimen B is 45 Which one is better for surface of a pavement Justify it?1 AnswerA circular hole of 25 mm diameter and depth of 20 mm is machined by EDM process. The material removal rate (in mm3 /min) is expressed as (Gate 2018 Mechanical engineering)0 AnswerFor an ideal gas with constant properties undergoing a quasi-static process, which one of the following represents the change of entropy (s) from state 1 to 2? (Gate 2018 Mechanical engineering)0 AnswerExplain the process of combustion of fuel with the help of chemical equations.1 AnswerA spherical pressure vessel (made of mild steel) of internal diameter 500 mm and thickness 10 mm is subjected to an internal gauge pressure of 4000 kPa. If the yield stress of mild steel is 200 MPa, the factor of safety (up to one decimal place) is ______0 AnswerGiven the sequence of terms, AD CG FK JP, the next term is -Mechanical Engineering-gate-20121 AnswerA steel rod was subjected to a fluctuating stress cycle that varied between a maximum of 400 MPa in tension to a minimum of 300 MPa in compression. What is the stress amplitude, in MPa?______. (-Gate metallurgical engineering 2014)1 AnswerA mbient air at 30◦C dry bulb temperature and 80% relative humidity was heated to a dry bulb temperature of 80◦C in a heat exchanger by indirect heating. The amount of moisture gain (g kg-1 dry air) during the process would be _______.0 Answer
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