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Re: Jawaharlal Nehru Technological University JNTU Model Papers
Here I am providing the B.Tech I Year 2011 Engineering Mechanics Question paper of Jawaharlal Nehru Technological University : Q. A screw jack raises a load of 40 KN. The screw is square threaded having 3 threads per 20 mm length and 40 mm in diameter. Calculate the force required at the end of a lever 400 mm long measured from axis of screw, if coefficient of friction between screw and nut is 0.12. Q (a) To determine centriod for the rectangle lamina, having a width of“b” and height of “h” (b) To determine the centriod for triangular lamina, having a base “b” and height “h”. Q (a) Define mass moment of inertia and explain transfer formula for mass moment of inertia. (b) Determine the mass moment of inertia of slender rod of length ‘l’ about its centroidal axis normal to the rod. Q. (a) An electric train which starts from one station is uniformly accelerated for the first 10 seconds during which period it covers 150 m. It then runs with constant speed until it is finally retarded uniformly in the last 40 m. Calculate the maximum speed and the time taken over the journey to the next stopping station which is 600 m from the previous station. (b) A flywheel which is at rest attains a constant speed of 300 rpm after accelerating uniformly for 10 seconds; determine the number of revolutions made by the flywheel during the speed. Q.a) What is the advantage of work-energy theorem? (b) A shaft of radius ’r’ rotates with constant angular speed ’w’ in bearings for which are coefficient of friction is µ. Through what angle ‘Ø′ will it rotate after the driving force is removed. Q. (a) Differentiate between free and damped vibrations (b) The amplitude of a simple harmonic motion is 0.5 m and the period is 1 sec. Determine the max. velocity and max. acceleration. Here I am giving the File Attachment Which Contain the file Attachment which Contain the B.Tech I Year 2011 Question Paper. Address: Jawaharlal Nehru Technological University Vizianagaram, Andhra Pradesh 533003 0884 230 0900 Map: |
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