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Derive at least four concept designs to satisfy the given specification.Use short written descriptions and simple sketches to illustrate your ideas. Show evidence of the use of the following techniques:
• brainstorming
• synectics
• morphological chart.
A 60 hp, 3-phase motor absorbs 50 kW from a 600 V, 3-phase line. If the line current is 60 A, calculate the following: (a) The efficiency of the motor (b) The apparent power absorbed by the motor (c) The reactive power absorbed by the motor
If 50.0 cm of copper wire (diameter 1.00 mm) is formed into a single circular loop and placed perpendicular to the uniform magnetic field that is increasing at a constant rate of 10.0 mT/s, at what rate is thermal energy generated in that loop.
Calculate the per unit impedance of the transformer using base values of 1 MVA and 400 V. (and .)
A circuit contains two flip-flops connected to a voltage source of +10 Volts, each flip-flop draws a current of 10 mA during its operation, if we neglect the power dissipation of the remaining circuit
Baseball cards are two and a half inches by three and a half inches how many baseball cards. On a bulletin board that is 45 inches long by 36 inches wide
A marine biologist is monitoring a dolphin swimming in seawater where the speed of sound is 1520 m/s. When the dolphin is swimming directly away at 5.4 m/s, the marine biologist measures the number of clicks occuring per second to be at a frequenc..
In a series RC circuit, R = 5 Ohms and C = 0.1F. The capacitor voltage is 10 volts at t=0. At t=0, a voltage of 4V is applied. a) Determine the total capacitance voltage and capacitance current as a function time after the external voltage is applied..
An unmanned X-43A scramjet test vehicle has achieved a maximum speed of Mach number 9.68 in a test flight over the Pacific Ocean. Mach number is defined as the speed of an object divided by the speed of sound.
Show that the magnetic field at a point P a distance R from the wire along its perpendicular bisector is B = (muI/2piR) * L/(L^2 + 4R^2)^1/2
A 1000-W iron is left on the ironing board with its base exposed to the air at 20°C. The convection heat transfer coefficient between the base surface and the surrounding air is 35 W/m2 ?c °C. If the base has an emissivity of 0.6 and a surface are..
Two loads connected in parallel are supplied from a single-phase 240-V rms source. The two loads draw a total real power of 400kw at a power factor 0f 0.8 lagging. One of the loads draws 120kW at a power factor of 0.96 leading. Find the complex po..
An N-type silicon substrate with the doping density of 1x10 15 cm-3 Arsenic is to be converted into p-type by Boron diffusion, so that the resistivity at T=75C is 5 O-cm. All atoms are fully ionized.
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