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- What are interpoles, and what is their purpose?A solenoid similar to the figure below, has a core made of caststeel (refer to the figure on the next slide). It has a cross-sectional area of 4cm2 and a mean length of 20cm. The coil has 100turns, and the coil current is 3.2A. Find the following:a)magnetomotive force, mmfb)magnetic field intensity, Hc)flux density, B (with graph)A solenoid similar to the figure below, has a core made of cast steel (refer to the figure on the next slide). It has a cross-sectional area of 4cm2 and a mean length of 20cm. The coil has 100turns, and the coil current is 3.2A. Find the following: a)magnetomotive force, mmf b)magnetic field intensity, H c)flux density, B
- Find an expression for the force on the slider block A in Figure. Neglect the reluctance of iron. The coils are powered by DC. and the parameters are:N1 = 200 ; N2 = 100 ; il = 10 A ; i2 =15A ; x = 3mm; a = 10mm; s = 10 cm 2Ans.: 250.4 N to the left. (I need the procedure)Find the support reactions and joint force of the construction shown on the figure, if; P=12 kN q=9 kN/m M=12 kN and L=2 mA DC current I flows in a long solenoidwith n coil-turns per unit length. Thecore is made of iron with permeability µ , and has a cross section area S.Determine the force acting on the coreif it is withdrawn to the position shownin figure.
- A solenoid similar to the figure below, has a core made of cast steel (refer to the figure on the next slide). It has a cross-sectional area of 4cm2 and a mean length of 20cm. The coil has 100turns, and the coil current is 3.2A. Find the following: d)Permeability, μ e) the relative permeability, μr f) the core reluctance, R and g) the flux, Ø. To stretch a spring 3.00 cm from its unstretched length, 12.0 J of work must be done. (a) What is the force constant of this spring? (b) What magnitude force is needed to stretch the spring 3.00 cm from its unstretched length? (c) How much work must be done to compress this spring 4.00 cm from its unstretched length, and what force is needed to compress it this distance?A rectangular loop carrying current I2 is placed parallel to an infinitely long filamentarywire carrying current I1 as shown in figure. Show that the force experienced by the loopis given by
- The mechanical part in the figure with the conversion ratio n = N1 / N2 = 1/2 is known that the second-side torque T2 = 10 Nm. In which option the rotation angle of the first side (Ɵ1 (t)) is shown correctly. (J1 = 0.1, J2 = 0.4, B1 = 0.005, B2 = 0.02)For a motor design, you need to design a solenoid coil that produces a magnetic flux density (B) of at least 2000 gauss when a 10 mA current flows through the conductor. Due to space limitations, the coil only can be 10 turns over a 1 cm length. To obtain the needed performance, go to Table 3 and choose a core material for the coil.Explain the hysteresis that can be found in materials due to force, magnetic and electrical subjection (give an example on two different materials below) show and explain the hysteresis curves for these materials. 1)High carbon steel 2)Cast iron