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Q. Figure can also be considered as a simple model of a magnetically operated relay that is commonly used for the automatic control and protection of electric equipment. Consider the core and armature (shown as "Bar" in Figure of the relay to be constructed out of infinitely permeable magnetic material. The core has a circular cross section and is 1.25 cm in diameter, while the armature has a rectangular cross section. The armature is so supported that the two air gaps are always equal and of uniform length over their areas. A spring (not shown in the figure), whose force opposes the magnetic pull, restrains the motion of the armature. If the operating coil has 1800 turns carrying a current of 1 A, and the gaps are set at 0.125 cmeach, find the pull that must be exerted by the spring. You may neglect leakage and fringing.
A selection form an application's menu, or a command typed in by the user, like at a DOS prompt or at the Run dialog box in Windows.
Q. Why is an emitter bypass capacitor used in an RC coupled amplifier? If an emitter resistor Re is used for self-bias in an amplifier and if it is desired to avoid the degene
Q. A one-line diagram of a three-phase distribution system is given in Figure. Determine the line-to-line voltage at the sending end of the high-voltage feeder when the transformer
what are the applications of thermodynamics in Electrical Engineering?
CPI Compare Immediate Instruction The 8 bit data specified in the instruction is compared with the contents of the accumulator. The comparison is done by subtracting
In terms of negative feedback, there exists an analogy between the operational amplifier and the power-steering mechanism of an automobile. The hydraulic pump is analogous to the p
Which clipper would you prefer between the series and the shunt clipper? Why?
Conductors for Lines The sizing of conductor must depend upon the load it is expected to serve and other factors, such as capacity required in future. Or else conductors/cable
difference between path fuction and point fuction
Calculation of Receiving End Voltage Consider the simple circuit shown in Figure. To find the voltage V 2 using analytical method: P = I V 2 = 0.5 ..... (1)
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