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A 0.12 meter long, 0.15 kg thin rigid rod has a small 0.22 kg mass stuck on one of its ends and a small 0.080 kg mass stuck on the other end. The rod rotates at 1.7 rad/s through its physical center without friction. What is the magnitude of the angular momentum of the system taking the center of the rod as the origin? Treat the masses on the ends as point masses.The answer is in kg*m^2/s.
In a long cilindric wire with a radius of 2 cm, a corrent with 80A goes thorugh it. What is the magnetic energy per unit of wire lenght?
A 3-phase, 480 V motor with a starting current of 235 A is located 1800 ft (550 m) from the electrical power source. What size copper conductors should be used to ensure that the voltage drop will not exceed6% during starting.
For each of the following signals, determine whether it isperiodic; if it is, determine its fundamental (i.e., smallest) period T0 and fundamental frequency f0. (a) x(t) =sin2(2t) (b) x(t) =cos(√3t) +sin(2t)
constructed using standard value resistors a. Without making a single calculation, which resistive element will have the most voltage across it Which will have the least b. Which resistor will have the most impact on the total resistance.
When a cloud passes over a certain spot on the surface of the earth a vertical electric field of E = 100 V/m is recorded there. The bottom of the cloud is a height d = 300m above the earth and the top of the cloud is 600m above the ground.
A 40 H resistor, a 5 mH inductor, and a 1.25/xF capacitor are connected in series. The series-connected elements are energized by a sinusoidal voltage source whose voltage is 600 cos (8000t + 20°)V. a) Draw the frequency-domain equivalent circuit.
Create 2 equations with 2 unknown variables. For example, one equation would be ax + by = c and the other equation would be dx + ey = f where x and y are the variables and a, b, d, and e are coefficients for the variables and c and f are numbers.
Compare the equivalent and nominal π-model for the line; At the full load the line delivers 800 MW at 0.9 leading power factor and at 480 kV to the receiving end load. Calculate voltage regulation and efficiency of the line
Compact linear actuators are required to compensate for vibration induced by the motion of a robot arm. The dynamic performance of the actuators is very important to ensure they can provide the required high frequency movements when a load is appl..
.a. If the following voltage pulse is being applied to a stepper motor coil to the increment the shaft, what type of driving style is being used b. What advantage does this have as opposed to a constant-voltage pulase
A 10kW, 230V, 50 Hz, three-phase induction motor has full-loadefficiency of 86%, and power factor of 88%. It is supplied by a three-core cable 100mlong, having conductors of cross sectional area 16 mm^2 andresistivity 17.2nΩ m.
The binary-coded-decimal (BCD) format uses 4 bits to represent 10 decimal digits. For example, 259 is represented as "0010 0101 1001" in BCD format. A BCD incrementor adds 1 to a number in BCD format. For example, after incrementing, "0010 0101 10..
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