Consider the mass-spring system below. The mass of the system is m, the spring constant is k. The displacement of the mass is x. Assume a force u is applied on the mass in the downward direction. Neglecting gravity, answer the following: (a) Write the equations of motion of the system. (b) Find the transfer function x(s)/u(s) of the system. Assume zer initial conditions. Ix (c) Let m=1, k=2. Assume an impulse force is applied. What is u(s)? Sketch the resulting response x(t).

In a. ., the number of parallel paths, is always equal to the number of poles. I ., the number of parallel paths, is always two (2), and there ........ .may be two or more brush positions إجابتك In . . both shunt and series field are excited. If the two fields aid each other the excited is called . If the two fields oppose each other, the ...... ... 大 .. ........ excitation is called إجابتك In . .compound, the shunt field is connected across terminals. In the ......compound, the shunt field is connected directly across the * .armature .....

Choose the correct option Electrical energy to Choose... Mechanical Energy Producing pulsating Choose... torque Mechanical energy to Choose... Electrical Energy Rotating Choose... Magnetic Field Mutual Choose... inductance

For the circuit shown in Figure:a. Determine the reluctance values and show themagnetic circuit, assuming that μ = 3,000μ0.b. Determine the inductance of the device.c. The inductance of the device can be modified bycutting an air gap in the magnetic structure. If a gapof 0.1 mm is cut in the arm of length l3, what is thenew value of inductance?d. As the gap is increased in size (length), what is thelimiting value of inductance? Neglect leakage fluxand fringing effects.

6) A wooden tie is 75mm wide,150mm deep and 1.5m long.It is subjected to a axial pull of 45000N.The stretch of the member is found to be 0.6380 mm. Find the Young's modulus for the material.

In the Maxwell bridge as shown in given figure, the value of resistance R, and inductance L, of a coil are to be calculated after balancing the bridge. The component values are shown in the figure at balance. The value of R, and L, will respectively be

The parallel-plate capacitor shown to the right is discharging so that the electric field between the plates decreases. Answer the questions below and explain your reasoning. The bulk of the credit will come from your explanation. What is the direction of the magnetic field at point P?

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1. For the mechanical system shown below, Figure 1, assume the friction between the mass and the ground is zero. • Draw the free body diagram. • Write the state-space representation of the system (matrix form). • Transfer function in state-space representation. m, hin m.

A ring of ferromagnetic material has a rectangular section. The inner diameter is 15 cm.The outer diameter is 24 cm. And the thickness is 5 cm. There is a coil of 500 turns wound onthe ring. When the coil has a current of 10 A, the flux in the core is 0.0007 Wb. Theaverage length of the ring is Ln=0.66m Determine:a) The magnetomotive force.b) The intensity of the magnetic field and the flux density.c) Reluctance, permeability and relative permeability.