(a) An electrodynamic wattmeter is used to measure the electrical power in a circuit. The diagram in Figure Q3(a) depicts the symbol for the two types of coils in the wattmeter. M L COM Ww. Figure Q3(a) Name the two coils and explain the reason for the number of turns to be low or high for each coil, respectively. (b) An electrodynamometer-type wattmeter has a current coil resistance, ZRc= 0.5 0. Calculate the percentage error of the wattmeter reading if the moving coil is connected before the current coil for a single-phase circuit. The load is specified as 220 V with unity power factor. Let the load current, I, = 88 I, = 88 + 10 = 98A. (e) An energy meter has a constant of 60 revolutions per kilowatt-hour (kWh). Calculate the number of revolutions made by the disc in 30 minutes when measuring the energy consumed by a single-phase load carrying the same current as the I, value set in part Q3(b) above at 230V and power factor of 0.5. Express your final answer to the nearest integer.

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In the image below the cylinder has a radius of 0.4 meters and a height of 0.8 meters. A non-uniform electric field exist in space of the form. ECX, y, z) = (800 (N/ (C m) y (200 (N/ C) j A) What is the flux through the very top, the sides, and the bottom surfaces of the image. B) Total amount of charge inside the image. Focus 目 84 F HE