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Q. Consider the toroid shown in figure made up of three ferromagnetic materials. Material a is nickel-iron alloy having a mean arc length la of 0.6 m; material b is medium silicon steel having a mean arc length lb of 0.4 m; material c is cast steel having a mean arc length lc of 0.2 m. Each of the materials has a cross sectional area of 0.002 m2 . Find the mmf needed to establish a magnetic flux of φ = 1.2 mWb by making use of the magnetization curves given in
Explain LDA, STA and DAA instructions LDA copies the data byte into accumulator from the memory location particular by the 16-bit address. STA copies the data byte from the acc
Q For a three-phase, fully controlled, recti?er-fed, separately excited dc motor, corresponding to ideal no-load operation, find the expression for the no-load speeds. Comment on w
Q. It is desired to have a sag or tilt of no more than 10% when a 50Hz square wave is impressed on an amplifier stage. The output circuit resistance is Rv=1K. What minimum value of
Q. Explain the application of clippers. There are numerous clipper applications. In general clippers are used to perform one of the following two functions: · Changing the s
a 400V 4-pole DC generator takes an armature current of 50A when rotating at 626 rpm. the armature circuit resistance is 0,25ohms. determine the generated emf. DOC
An interrupt which can be never be turned off (ie. disabled) is called as Non-Maskable interrupt.
Discuss description of insulating materials on the basis of physical and chemical structure Insulating materials, on the basis of their physical and chemical structure may be d
Avalanche Breakdown: This type of breakdown takes place when both sides of junction are lightly doped and consequently the depletion layer is large. In this case, the electric
Magnetic circuits To see how this is used in practice, consider a coil of N turns wound onto a closed ring shaped former with a very high (note: r (steel) = 200
Covert Analog Signal into Digital Signal A strain gauge is used in Wheatstone Bridge configuration. The output from the Wheatstone Bridge varies from zero to a maximum strain
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