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Two-wattmeter method is used to measure the power absorbed by a 3-phase induction motor.the wattmeter readings are 12.5kw and 4.8 kw.
Find:
i)the power absorbed by the machineii)load power factoriii)reactive power taken by the load.
Using the Chebyshev inequality, predict how many samples you'll need to take from an exponential distribution in order to obtain, with a probability of at least .95, an estimate of accurate to one percent.
GaAs is composed of equal numbers of atoms of gallium and arsenicin a lattice similar to that of silicon. Suppose a siliconatom replaces a gallium atom in the lattice. Do you expect the silicon atom to behave as a donor or acceptor impurity
A terminated transmission line with Z0 = 60 ohm has a reflection coefficient at the load of = 0.4 60. (a) What is the load impedance (b) What is the reflection coefficient 0.3 away from the load (c) What is the input impedance at this point
Using the Matlab commands fir1 and freqz, construct a FIR digital bandpass filter with cut-off frequencies of 150 and 300 Hz for a signal with a sampling frequency of 1000 Hz and 512 sampled points. Let the order of the filter be 10, and then increas..
Find the Thevenin equivalent ith respect to terminals a and b using source transformation ONLY, ent of the circuit-
The steering wheel of a car has a radius of 0.11 m, while the steering wheel of a truck has a radius of 0.28 m. The same force is applied in the same direction to each. What is the ratio of the torque produced by this force
A non-inverting amplifier incorporates an op amp having an input impedance of Rin. Modeling the op amp as shown in Fig. 8.43, determine the closed-loop gain and input impedance
An analog voice signal that can vary over the range 0.50 mA is digitized by sampling it at 8 kHz. The first four sample values are 10, 21, 36, and 16 mA. Write the corresponding digital signal (a string of 1 and 0 bits) by using a 4-bit representa..
An ac circuit with 4.157kv 60hz with a load of 2880 kva load and pf=.8 lagging find all the currents (6 total), also draw the diagram.
A tire is rolling along a road, without slipping, with a velocity v. A piece of tape is attached to the tire. When the tape is opposite the road (at the top of the tire), its velocity with respect to the road is.
An internally compensated op amp is specified to have an open-loop gain of 106dB and a unity-gain bandwidth of 3MHz. Find fb and the open-loop gain in dB at fb.
A capacitor is formed by two metal parallel plates with the dimensions 210 mm x 210 mm separated by the gap of 1.2 um (u=micro) filled with dielectric material with relative dielectric permittivity 3.8.
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