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A simple pendulum is taken at a place whe re its separation from the earth's surface is equal to the radius of the earth. Calculate the time period of small oscillations if the length of the string is 1.0 m. Take g = n2 ms-2 at the surface of the earth.
An infinite grounded conducting tube of radius 10cm is centered on the z axis. A concentric charged tube of radius 6 cm has a surface charge density of 24 uC/m2. A 1m long section of the charged tube is compressed to change its radius to 3 cm.
An RL circuit takes a current of 7A that lags behind the 231-volt source by 35 electrical degrees. Calculate the power factor, impedance, resistance and inductance of the circuit.
Compare the maximum theoretical PCE for 980-nm and 1475-nm pumping in an EDFA for a 1545-nm signal. Contrast this with actual measured results of PCE = 50.0% and 75.6% for 980-nm and 1475-nm pumping, respectively.
3. For the circuit shown, calculate (see attachment for circuit) a. The input resistanceat the base of the transistor. b. Theinput resistance of the amplifier
A certain magnetic core has a core loss of 8.4 W, of which one-third is eddy current loss, when the magnetizing field is changed 60 times a second. determine the core loss if the magnetizing field is changed only 50 times a second.
The lifetime of a turtle is a continuous value uniformly distributed between 50 and 150 years. Let X and Y be the lifetimes of two randomly chosen turtles, and consider the following events: A = {X
A step-down transformer has a120V rms primary voltage applied and a 12V rms voltage is measuredat the secondary. Assuming the transformer can be considered ideal, determine the turns ratio, n.
steam flows through a turbine one inlet and two exits with know condition at the steady state ( hints: h1=3231KJ/kg, h2=2812 KJ/kg , specific volume (v)= 0.0994 m^3/kg , at p= 30 bars,v=0.4045m^3/kg, at p=5 bars, no potential and kinetic energy ch..
For the open-loop system \(G(s)=y(s)/u(s)=1/[s^{2}(s^{2}+400)]\) design the controller and estimator so that the closed-loop unit step response to a command input has a rise time tr
A 120 Veff motor draws 1.5 kVA at a lagging power factor of .85. Determine the size of the capacitor that must be placed in parallel with the motor for a power factor of 1.
The dielectric strength of air is 3.0 10^6 V/m, and that of neoprene rubber is 1.2 10^7 V/m. A certain air-gap, parallel plate capacitor can store no more than 0.070 J of electrical energy before breaking down. How much energy can this capacitor s..
Consider two signals that have the same frequency. When the amplitude of the first signal is at its maximum, the amplitude of the second signal is at half its maximum from the zero level. What is the phase shift between the two signals
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