Example 3 An automobile suspension system is critically damped, and its period of free oscillation with no damping is 1s. If thee system is initially displaced by an amount x. and released with Zero in iti al velocity, find the dis place ment at t = 1s.
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- a. Sketch the magnetization-temperature graph of a material. b. A mass of 1000kg transformer is mounted vertical on circular rod of length 8m, supporting with a base radius 50cm. What? would be the stress experienced at the base of the rod? c. Draw the demystify stress and strain characteristics curve of a material and label fully all the stages.1- Please, Derive Equation of Motion for the 2DOF system with Harmonic force due to the Shaker in the Magnetostrictive Energy Harvesting. Note: I want EOM in Matrices form to get Natural frequencies and mode shapes + Steady-State Response of Spring-Mass SystemGive the analogous quantities for electrical voltage in linear mechanical, pneumatic, hydraulic and thermal systems. b. Illustrate by diagrams the isomorphism of the processes in RC electric circuit and pneumatic system.
- A power screw with double start ASME thread is proposed to be used for (Q1) cyclically raise and lower a load of 1000 Ib at an axial velocity of 4 in/sec. It has three threads per inch and with thread outside diameter of 1.50 inches. The proposed mean collar radius is 1 inch. The starting and sliding friction coefficients for the screw and the collar are f_starting=0.06 and f_running=D0.03 find: a. The staring and the sliding torque required to raise the load.b. Check the self-locking condition for the screw assembly. c. What is the power screw efficiency of the proposed assembly?d. If a special gear motor is to be used to drive this power screw assembly, what would be the minimum power and torque requirements for the drive motor?e. The length of the nut if the permissible .bearing pressure is 725psi2-The Magneto motive force of a steel-ring of 25 cm mean diameter- If it is wound uniformly with 700 turns of wire carrying a current of 2 amp. a-1500 AT b-2000 AT c-1800 AT d-1400 AT 3-The self-inductance cocfficient of a d.c. electromagnet- whose field winding is wound with 960 turns and has resistance of 50 2 when the exciting voltages is 230 V and the magnetic flux linking the coil is 0.005 Wb. a-10.43mH b-10.43H c-1.043H d-0.1043 H 4- An iron rod, 2 cm in diameter and 20 cm long is bent into a closed ring and is wound with 3000 turns of wire. It is found that when a current of 0.5 A is passed through this coil, the flux density in the coil is 0.5 Wb/m2. The magnetic field intensity of it -- a-300AT/m b-30AT/m c-3000AT/m d-300AT/cmQ#3: Practically we observed that in single phase induction motor a capacitor is need for starting purpose. The question is that why we need the capacitor? And if the capacitor is not available then which device or element will use to start the single phase induction motor? Solution#3 (to be typed here by the student)
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