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Construct two branches of a hyperbola when its transverse axis is 50 mm long and foci are 70 mm apart. Locate its directory and determine the eccentricity.
A team of scientists is designing a radar as a probe for measuring the depth of the ice layer over the Antarctic land mass.To measure a detectable echo due to the reflection by the ice-rock boundary, the thickness of the ice sheet should not excee..
the bridge circuit is energized from a 21 V dc source. the bridge is balanced when R1 = 800Ω, R2 =1200Ω, and R3 = 600Ω. a) what is the value of Rx b) how much current(in milliamperes) does the dc source supply
The fuel tank contains 33 kWh per gallon. If the vehicle were to be replaced by an electric vehicle that charges from the power grid, how much power would it draw (in W, kW, or MW) to recharge at the same rate as the gasoline powered automobile
Two balanced three-plia.se loads that are connected in parallel are fed by a three-phase line having a series impedance of (0.4 + j2.7) ohm per phase. One of the loads absorbs 560 kVA at 0.707 power factor lagging
A coaxial transmission line consists of two concentric cylinders.The inner cylinder has radius r1 and the outer cylinder has radius r2. The inner cylinder has a surfacecharge density ρS C.m-2, that is uniformly distributed along its length.
A 3-phase, 2300 V, 60 Hz, 12-pole, Y-connected synchronous motor has 4.5 ? per phase synchronous reactance and negligible stator winding resistance. The motor is connected to an infinite bus and draws 250 A at 0.8 power factor lagging.
Construct an inverting Dc integrator circuit using a jumperwire to act as the switch across the feedback capacitor. Notice that the input voltage is 0 V, so the output voltage shouldnot change, even after the switch is opened.
a.) Create two separate sampled sinusoids with a sampling frequency 7000hz. Two sinusoids frequency at 1000hz, 1900 hz. Add sinusoids together creating x(t). Set time vector between 0 and 10s. b.) With x(t) plot fourier transform using khz as frequ..
An optical communication system employs a photodetector whose output is modeled as a Poisson(λ ) random variable X. Find the second moment and the variance of X.
Each phase of a delta-connected load comprises a resistance of 30 and an 80 μF capacitor in series. The load is connected to a 400 V, 50 Hz, 3-phase supply.
A single cell is modeled as a disk of radius 1 km. If a mobile at the edge of the cell transmits at its maximum power limit, its received SNR at the base-station is 15 dB when no one else is transmitting. Estimate (via numerical simulations) the a..
At standard sea-level conditions, if the flow velocity at some region of the flow field exceeds about 250 mi/h, compressibility begins to have an effect in that region. Calculate the velocity of the flow in the test section of the wind tunnel abov..
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