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#2
11th January 2017, 04:58 PM
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| Re: DRDO Paper
The Defence Research and Development Organisation were ensconced in 1958 by Defence Science Organisation (DSO). It was established after merging Technical Development Establishment (TDE) and Directorate of Technical Development & Production (DTDP) with DSO. Exam Pattern DRDO recruitment Test will be conducted for 350 marks total. Candidates have to finish this test with in 2 hours. Test is comprised of total 6 subjects. Each subject will carry 50 marks except technical. Technical will be conducted for 100 marks. DRDO questions:   DRDO Mechanical Exam Paper: 1. In the case of a curved beam subjected to pure bending, which of the following is true? (a) Neutral axis coincides with the centroidal axis. (b) Neutral axis lies between the centroidal axis and the center of curvature. (c) Location of neutral axis depends upon the magnitude of bending moment (d) There is no neutral axis. 2. Spur gears are used for (a) connecting two intersecting shafts (b) transmitting power between two intersecting shafts (c) transmitting power between two parallel shafts (d) transmitting power between two inline shafts 3. Which of the following bearings are termed as antifriction bearings? (a) Journal bearings (b) Gas lubricated bearings (c) Ball and roller bearings (d) Air bearings 4. In a slider-crank mechanism, the crank is rotating with an angular velocity of 20 rad/s in counterclockwise direction. At the instant when the crank is perpendicular to the direction of the piston movement, velocity of the piston is 2 m/s. Radius of the crank is (a) 100 cm (b) 10 cm (c) 1 cm (d) 0.1 cm 5. Two parallel shafts whose axes are separated by a distance of 75 mm are to be connected by a spur gear set so that the output shaft rotates at 50% of the speed of the input shaft. Which of the following could be the possible pitch circle diameters of the gears. (a) 25 mm and 50 mm (b) 30 mm and 60 mm (c) 50 mm and 100 mm (d) 60 mm and 120 mm |