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A single–point cutting tool with 12 degree rake angle is used to machine a steel work– piece. -gate-mechanical-20111 AnswerD uring orthogonal machining of a job at a cutting speed of 90 m/min with a tool of 10° rake angle, the cutting force and thrust force are 750 N and 390 N, respectively. Assume a shear angle of 35°. The power (in W) expended for shearing along the shear plane is ______0 AnswerWhich pair of following statements is correct for orthogonal cutting using a single-point cutting tool? - Gate Mechanical Engineering 20141 AnswerAn inclined blade cutting tool of 250 mm width is operating at 200 mm cutting depth. The normal load on the tool and the coefficient of soil-metal friction are 1000 N and 0.3, respectively. The soil cutting force per unit length of cutting edge is 201 AnswerF ollowing data correspond to an orthogonal turning of a 100 mm diameter rod on a lathe. Rake angle: o15 ; Uncut chip thickness: 0.5 mm; nominal chip thickness after the cut: 1.25 mm. The shear angle (in degrees) for this process is _______ (correct to two decimal places).0 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 AnswerIn an orthogonal machining with a tool of 9° orthogonal rake angle, the uncut chip thickness is 0.2mm. The chip thickness fluctuates between 0.25 mm and 0.4 mm. The ratio of the maximum shear angel to the minimum shear angle during machining is _________1 AnswerRaisins are gently wiped off before final weighing with the help of -cbse-biology-class10-20111 AnswerA welding operation is being performed with voltage = 30 V and current = 100 A. The cross-sectional area of the weld bead is 20 mm2. The work-piece and filler are of titanium for which the specific energy of melting is 14 J/mm3. Assuming a thermal efficiency of the welding process 70%, the welding speed (in mm/s) is __________ (correct to two decimal places).0 AnswerQ.5 For a symmetric airfoil, the lift coefficient for zero degree angle of attack is GATE-Aerospace Engineering-Question-20121 AnswerA streamline and an equipotential line in a flow field -gate-mechanical-20111 AnswerA cylindrical workpiece is turned at a feed of 0.1 mm/rev with a perfectly sharp tool. In ASA system, the side and end cutting edge angles are 15° and 5°, respectively, as shown in the figure. The peak-to-valley roughness (in μm, up to one decimal place) of the machined surface is ______0 AnswerThe contents of a well-insulated tank are heated by a resistor of 23Ω in which 10A current is flowing. -gate-mechanical-20111 AnswerT aylor’s tool life equation is used to estimate the life of a batch of identical HSS twist drills by drilling through holes at constant feed in 20 mm thick mild steel plates. In test 1, a drill lasted 300 holes at 150 rpm while in test 2, another drill lasted 200 holes at 300 rpm. The maximum number of holes that can be made by another drill from the above batch at 200 rpm is ______ (correct to two decimal places).0 AnswerA tool that supports traceability, recording of incidents or scheduling of tests is called1 AnswerIf A(5,2), B(2,-2) and C (-2,t) are the vertices of a right angled triangle with angle B = 90 degree, then find the value of t. Mathematics CBSE class 10 20151 AnswerIn a circle of radius 21 cm, an arc subtends an angle of 60 degree at the centre. Find: Mathematics CBSE class 10 20132 AnswerA blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron? cbse-class8-physics-20151 AnswerThe lexical analysis for a modern computer language -gate-cse-20111 AnswerHeat and work are____ -gate-mechanical-20111 Answer
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