Four signs are mounted on a frame spanning a highway, and the magnitudes of the horizontal wind forces acting on the signs are as shown. Determine a and b so that the point of application of the resultant of the four forces is at G.

A square bar carries a series of loads as shown. Compute the load (kN) and stress (MPa) in each segment of the bar. Determine whether the load or stresses are tension (T) or compression (C). All loads act along the central axis of the bar.

Write down the differential equations describing the loop currents of the given circuit. Assume clockwise rotation and i passes through the voltage source. R1 2 Ohms L1 C1 0.5F 0.3H Vs V R3 6 Ohms R2 10 Ohms C2 0.25F

A solenoid of length 9.60 cm and diameter 0.600 cm is wound with 234 turns per centimeter. A. If the current in the solenoid is decreasing at a rate of 36.1 A/s, what is the induced emf in one of the windings? B. If the current in the solenoid is decreasing at a rate of 36.1 A/S, what is the induced emf in the entire solenoid?

Task 3 A three phase, four wire star connected load consisting of: ZR: a resistor of 9500 in series with a 3H inductor ZB: a resistor of 1950 ZY: a resistor of 1950 in series with a 4µF capacitor Using the equipment available in the power lab (Room T017), connect the given load to a three-phase supply available in the lab and: 3.1. Determine the current of each line and the neutral current and measure the total power supplied by the source. 3.2. Analytically, calculate all currents and the total power and compare with those obtained in measurements. 3.3. Device a method and measure the waveform of the neutral current. Discuss the obtained waveform and the reason for any distortion in the waveform 3.4. Validate your calculations using computer simulation

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a toroidal iron core with air gap problem...

The swing equation provides the information about  Stability of the system Efficiency of the system Power flow under steady state Performance of the system

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Two cities A and B are connected by a 200km long train line. A train leaves A for B at 20 km / h at the same time as another train leaves B for A at 5 km / h. In the samemoment a fly leaves from A to B following the train line. The fly flies at 40 km / h until it collides with train B. At that moment it returns instantly and follows the train line until it collides with train A. At that moment it returns instantly and follows the line of the train. train until it collides with train B. The fly continues this process, traveling ever smaller distances until the two trains meet. (It is an ideal problem and the fly does not get squashed by the trains).What is the total distance traveled by the fly?