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1) The cross-sectional area of the core of a 1.2-kVA, 120/208-V, 50-Hz ideal transformer is 100 cm^2. The primary has 60 tuns. Calculate
(a) the induced emf per turn,
(b) the number of turns in the secondary, and
(c) the effective flux density in the core.
2) A power amplifier can be represented by a current source in parallel with a 200ohm resistance. An 8-ohm loudspeaker is connected to the power amplifier via an audio transformer so that maximum power is transferred to the loudspeaker. What must be the a-ratio of the transformer?
Suppose you are to construct a logic circuit with inputs {A,B,C} and output {F} The logic is such that "F" is asserted only when "A" or "B" are asserted and "C" is not. First draw and complete the truth table
The system uses a 7-cell reuse pattern. If the offered traffic per user is 0.03 Erlangs and the average number of calls per hour per user is 1.5, for an Erlang-C system with a probability of delaying a call being 5%, calculate the traffic load per..
If the overall impulse response of a data communication system is araised cosine pulse with 100% excess bandwidth (i.e. roll-offfactor of 1), then find the height and the width of the eye pattern.
A p-n junction solar cell has Voc = .5 V and Jsc = 20 mA/cm2. A second cell of same area has Voc = .6V and Jsc = 16 mA/cm2. Assuming both cells obey ideal diode equation find the values of Voc and Jsc when connected in parallel and series
A residential four-wire system supplies power at 220V rms to the following single-phase appliances: On the first phase, there are ten 75-W bulbs. On the second phase, there is a 750-W vacuum cleaner with a power factor of 0.87.
You are an electrical engineer for Packaging, Inc. Your boss has assigned you a project to program a pick and place system using a robot to remove cases from a conveyor to a pallet. provide a narrative description of how your system will work.
Design a digital thermometer system that can compensate for errors in the temperature sensing device's output T, which is an 8-bit input to the system. The compensation amount can be positive only and comes to the system as a 3-bit binary number
1) Two signals are said to be orthogonal if the integral of the product of the signals is 0 over one period of the new (multiplied) signal. Assume x(t) and y(t) are orthogonal energy signals with energy, Ex and Ey, respectively.
Design a circuit to multiply a 2-bit unsigned magnitude binary number by 1, 2, 3, or 4 to produce a 4-bit output
Given the electric field of a 200 MHz uniform plane wave propagating in the z^ direction, where E is parallel to the y axis and reaches a peak value of 150 (mV/m) at t = 0 (s) and z = 0.5 (m).
Calculate ?Ho for the combustion of butane gas (C4H10), to produce gaseous carbon dioxide and liquid water: 2C4H10 (g) + 13O2(g)->8CO2(g) + 10H2O (l) a. Calculate the standard enthalpy change, ?Ho for the reaction.
A 30 ohm resistor dissipates 500W of power. What current is running through the resistor?
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