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A 3-phase , 4 wires balanced supply with BCA phase sequence issupplying the following loads connected in each phase:Phase A:20kVA at 0.8 power factor laging.Phase B:10kVA at 0.8 power factor leading.Phase C:10kVA at unity power factor.Find the line currents, load impedance connected in each phase andthe overall power factor of the system. Given that VAB =20.8kV(angle -30).
A switching circuit has three inputs (A,B,C) and one output (Z). If A=0, the output Z is the exclusive-OR of B and C. If A=1, the output is the equivalence of B and C. (a) Find the truth table for Z.
The small identical conducting spheres have charges of2.0 x 10^-9C and - 0.5 x10^-9 Coulomb respectively. When they are placed 4 cm apart. what is the force between them If they are brought into contact and then separated by 4 cm
find the value of x that is required for nulling the output offset voltage that results from Q1 having an area 10%larger than that of Q2.
A cuboid of Germanium (Ge) has contacts all over its 2 x 1 mmends and point contacts exactly half way along its 5 mm length, atthe center of the 5 x 1mm faces. A magnetic field can be appliedparallel to this face.
The signal x(t) = 2 - sin(4.5t - pi / 4) + 3 cos (24t + pi / 2) is input into a system with frequency response H(omega). Find the output signal y(t) if: H(omega) = rect(omega/80) H(omega) = 2 - 2rect(omega/8) H(omega) = sin c(omega/20)
For a complex load of 100 + 25 j ohm. find the matching circuit consist of ideal capacitor and/or inductor to match the load to 50 ohm impedance at 500MHz. The solution should include circuit schematic and values of each component
The company finds it efficient to periodically replace all the bulbs in the building at the same time. After how many ours should all the bulbs be simultaneously replaced to ensure that no more than 20% of bulbs have failed before they are replace..
(a) Show that the actual response at f=fT is approximately 9dB below the maximum value. What is the phase angle at this frequency (b) what is the slope of the magnitude plot for f>>fT What is the phase angle in this frequency range
Why is V2 and the 2kO resistor included in the KCL equation at node V1. Similarly, why is V1 and the 3kO resistor included in the KCL equation at node V2.
Consider a disk that is scheduled using the Shortest Seek First (SSF) policy. At time t, let the disk have the following requests in its queue: Request Cylinder R1 45 R2 39 R3 49 R4 52 R5 69 R6 35 R7 3 R8 66.
Determine the height d of cable AB so that the force in cables AD and AC is one-half as great as the force in cable AB. What is the force in each cable for this case. The flower pot has a mass of 50 kg.
For the following signal x[n] = ( 1 0 n 4 0 otherwise (a) Compute its spectrum following the definition of the Fourier transform. (b) Obtain its magnitude spectrum in one period . Note: pay attention to that the magnitude must be positive.
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