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A relay is essentially an electromechanical switch that opens and closes electrical contacts. A simplified relay is represented in Figure. It is required to keep the fenomagnetic plate at a distance of 0.25 cm from the electromagnet excited by a coil of N = 5000 turns, when the torque is 10 N · m at a radius r = 10 cm. Estimate the current required, assuming infinitely permeable magnetic material and negligible fringing as well as leakage.
(a) Express the storedmagnetic energy Wm as a function of the flux linkage λ and the position x.
(b) Express the coenergy Wm as a function of the current i and the position x.
Write down about the following terms: (i) Pirani Gauge (ii) Rotameter (iii) Hot wire Anemometer (iv) Drag Force Flow Meter
A TDM signal of the type is formed by samplingM voice signals at fs = 8 kHz. If the TDM signal then modulates the amplitude of a 4-MHz carrier for radio transmission, determine the
Q. Show Maximum Differential Input Voltage of amplifier? This is the maximum value of differential input voltage v p - v n that can be applied without damaging the op amp.
The generator of AM EMFs consists of a battery-driven radiofrequency (RF) EMF generator connected to a 1.5 m long 50 ? coaxial cable, to the other end of which a stainless-steel sp
Materials with 'hard' magnetic B/H characteristics often show a strong residual magnetism. This makes them suitable for making permanent magnets. If the ring material were magnetis
For the circuit of Fig 1a: (i) Using Ohm's Law , determine the equivalent resistance across the battery (ii) determine the current through each resistor (iii) the arrang
what is ohm?
EI Enable Interrupts Instruction The interrupt enable flip flop is set and all the interrupts of 8085 microprocessor are enabled which are disabled by DI instructi
Q. You are to construct a modified truth table for the circuit realization of the SRFF shown in Figure. As indicated in the text, you guess an output and then go back ato check it
Charge and Electric Force The proton has a charge of +1.602 10 -19 coulombs (C), while the electron has a charge of -1.602 × 10 -19 C. The neutron has zero charge. Electric c
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