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Derive an expression for the Bohr magneton and calculate its value. A particular crystal has a cubic unit cell of side 1 nm. Each cell has an associated induced magnetic moment of 10-7 µB for an applied field of 103 A m-1. Calculate the susceptibility and offer an opinion as to whether the material is diamagnetic, paramagnetic or ferromagnetic.
A load operating at 6400 Vrms draws 56 A at a PF of0.812 lagging. Find: (a) the peak current in amperes (b) the instantaneous power at t=2.5 ms assuming an operating frequency of 60 Hz
Assuming demagnetizing armature reaction mmf proportional to deter mine the internal starting torque at the starting current of 350 A.
For the circuit in Figure, assume transistor and diode parameters of VBE (on) = 0.7 V and Vγ = 0.4 V. Neglect base currents. Find i1, i2, i3, i4, iD and vo.
A pith ball of 10 gm carries a charge of 10 micro C. what must be a charge on a ball placed 10 cm directly above which will hold the pith ball in equilibrium
A 10 kHz signal modulates a 500 MHz carrier, with a modulation index of 2. What are the maximum and minimum values for the instantaneous frequency of the modulated signal
An iron-constantan thermocouple (constantan is an alloy of copper and nickel) is calibrated by inserting its junction in boiling water and measuring a voltage V = 5.27 mV, and then inserting the junction in silver chloride at its melting point and..
Draw an inverting amplifier using an op amp with component values. Now, tell me where the virtual ground is. What are the properties of a virtual ground? What is the closed-loop voltage gain, input impedance, and bandwidth?
Given a sinusoid v1(t) whose phasor isV1 = -3 + j4 V, use phasor phasor method to find the voltage v2(t) that leadsv1(t) by 90 degrees and has an amplitude of 10V.
Draw a timing diagram for an asynchronous SR, clocked SR and clocked D flip-flops undergoing a setting, resetting and latching (hold) condition.
A silicon abrupt junction in thermal equilibrium at T=300 K is doped such that Ec-Ef=0.21 eV in the n region and Ef-Ev=0.18eV in the p region. (a) draw the energy band diagram of the pn junction.
Use standard transistors and assume effective CT load capacitances of 0.05 pF. Determine the propagation delay time as a function of various transistor width-to-length ratios.
What logic gate could be used to provide the logic at Y? Check your answer by observing the output at X and Y on the Logic Analyzer.
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