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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.
Describe in brief how email system works Following is a simple description of how email system works: - Sender composes a message (and attaches a file if required) and send
Q. Working of Equalizer circuit? Equalizer circuit: Equalizers are combination of passive components (capacitors, resistors and so on) that are used to regulate the amplitude a
how is working transfmer?
Q. A source of impedance ¯ Z S = R S = 100 has an open-circuit voltage v S (t) = 12.5 cos ωot and drives a 75- transmission line terminated with a 75- load. Find the current
how can yuo calculate voltage,curent basing on the meter bridge?
Q. What do you know about Input Impedance? Input Impedance : Amplifiers will be quoted as having a specific input impedance. The sort of load it will place on preceding equipm
A two-pole, three-phase, 60-Hz, wye-connected, round-rotor synchronous generator has N a = 12 turns per phase in each armature phase winding and flux per pole of 0.8Wb. Find the r
Problem statement: A specialized piece of laboratory test equipment, called a spectrum analyzer,will be placed on a mobile push cart. The spectrum analyzer measures the amplitude
How is 8255 (Programmable Peripheral Interface) configured if its control register contains 9B h. Ans. Programmable Peripheral Interface Command Byte B (sets or
#The requirement is as follows- There is a signal which is in the range of 0 to 5Hz. This signal frequency composition is to determined. The resolution of the determination is 1Hz.
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