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Derive the differential equation governing the motion of the system, using $\theta$ as the generalized co-ordinate.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A moment Mosin wt is applied to the end of the end of the bat of figure.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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Using the given values, determine the steady state amplitude of the block.
dynamics of machinery updated 5.1 years ago by teamques10 ★ 66k
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Prove that $wp = wn \sqrt{1- 2 \zeta^2}$
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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At what speeds will the steady state amp of torsional oscillations of the disc of the system be less than 2 degree?
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A 30 kg compressor is mounted on an isolator pad of stiffness $6 \times 10^5 Nm^{-1}$ When subjected to a harmonic excitation of magnitude 350 N and frequency $100rad^{-1}$,
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A 65 kg electric motor is placed at the end of a 1.3m steel (having $E = 210 \times 10^9 N/m^2)$
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A vehicle has mass of 1200 kg. the suspension system has a spring const. of 400 KN N/m and damping ratio of 0.5. If the vehicle speed is 20 km/hr. determine (x) the disp amplitude of the vehicle.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A vehicle of mass 1200 kg is travelling on a road the surface of which varies sinusoidally with an amplitude of 0.05m and wave length of 6m.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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The spring of an automobile trailer is compressed by 0.1m under its own weight of 500 kg. find the critical speed, When the trailer is travelling over a road with a profile approx.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A 35 kg flow monitoring device is placed on a table in a laboratory. A pad of stiffness $2 \times 10^5$ N/m and damping ratio 0.08 is placed between the apparatus and the table.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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An engine is mounted on four rubber pads such that the static deflection is 5mm. if the mass of the engine and coupling is 300kg at what speed motor run for 95% isolation?
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A huge machinery is mounted on a bed plate which is supported on four elastic members, each having stiffness $3.92 \times 10^6 N/m$ the total mass to be supported is 1 to n.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A machine 100kg mass has a 20kg rotor with 0.5mm eccentricity.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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An air conditioner weighs 1115N and is driven by a motor at 500 rpm. What is the required static deflection of an undamped isolator to achieve 80% isolation?
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A 100 kg turbine operates at 2000 rpm, What percent isolation is achieved if the turbine is mounted on four identical springs in parallel each of stiffness $3 \times 10^5 N/m$
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A refrigerator weighing 30 kg is to be supported by three springs each having stiffness of K (N/m) if the unit operates at 580 rpm,
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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Case 5: vibration measuring instrument.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A vibrometer having a natural frequency of 4 rad/s and damping ratio of 0.2 is attached to a structure that performs a harmonic motion
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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Show that an undamped measuring instrument will show true response for frequency ratio.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A vibrometer is used to measure the vibration at the base of a variable speed machine. The operation speed of machine ranges between, 500 to 1500 rpm,
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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A seismic instrument with natural frequency of 6Hz is used to measure the vibration of machine running at 120 rpm.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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Problems on accelerometer. An accelerometer has natural frequency of 80 Hz and a damping co efficient of 8 Ns/m, When attached to vibrating structure,
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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An accelerometer of natural frequency 200 Hz and damping ratio 0.7 is used to measure the vibration of a system
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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Determine the necessary stiffness and the damping constant of a accelerator.
dynamics of machinery updated 5.1 years ago by bhaveshkumarn.pasi • 500
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