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The parameters of the basic source-follower circuit in given Figure are RS = 1.5 k Ω, VT N = 1.2 V, and λ = 0. Assume the transistor is biased at IDQ = 1.2 mA.
(a) If the transistor conduction parameter is Kn = 1.5 mA/V2, determine
(i) Av f = vo/vi and
(ii) Rof .
(b) If the conduction parameter increases by 50 percent to Kn = 2.25 mA/V2, determine the percent change in (i) Avf = vo/vi and (ii) Rof .
A 220V , 13.47KVA, 0.707 lagging power factor load is in parallel with a three phase wye- connected round rotor synchronous motor having a synchronous reactance of 1.27W. The motor draws 33KW at apower angle of 30 degree.
Determine the quantizing levels, in terms of σ, so that the entropy at the output of a quantizer is maximized. Assume that there are six quantizing levels and that the quantizer is a zero-mean Gaussian process as in the previous problem.
Use Property Rights Theory to explain why stockbrokers are permitted to keep their client lists (i.e., continue to contact and do business with clients) if they are dismissed from their jobs and find employment at another brokerage house.
The Source feed two loads, both of which areY-connected. The impedance of load 1 is 8 + j6 Ω/φ. Thecomplex power for the a-phase of load 2 is 600
A compact disk (CD) records audio signals digitally by using PCM. Assume that the audio signal bandwidth equals 15 kHz. If the Nyquist sample are uniformly quantized into L=65,536 levels and then binary-coded.
Find the Thevenin and Norton equivalent circuits for the circuit. Find the maximum power that this circuit can deliver to a load if the load can have any complex impedance. Repeat if the load must be purely resistive.
Calculate the difference in the refractive indices which is necessary in order that an asymmetric waveguide operates in the zeroth mode. Take AO = 840 nm, t = 800 nm, and n2 = 3.61.
Calculate the thermal-equilibrium electron and hole concentrations in a compensated p-type semiconductor. Consider a silicon semiconductor at T=300K in which Na = 10e16 cm-3 and Nd=3x1015 cm-3. Assume ni = 1.5 x1010 cm-3.
A 3-phase induction motor, at rated voltage and frequency, has a starting torque of 140 percent and a maximum torque of 210 percent of full-load torque. Neglect stator resistance and rotational losses and assume constant rotor resistance.
A thin film waveguide has n1 = 1, n2 = 1.5 and n3 = 1.462. The waveguide thickness is 0.9 μm.Light from a He-Ne laser (λ0 = 632.8 nm) is being guided in the (fundamental) TE0 mode, for which the effective refractive index of the guide is neff = 1.481..
Discuss linearity, time-invariance and causality of the following systems
An electric heater contains 40 litres of water initially at a mean temperature of 15 °C; 2.5 kW h is supplied to the water by the heater.- what is the final mean temperature of the water?
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