In Figure 12 of your study unit, the contact SA1 in the electric furnace control closes A. whenever the 24-V transformer is energized. B. when the load limit switch (LS 1) operates. C. immediately when the thermostat calls for heat. D. when the heater coil sequencer (HTRSEQ1) operates.

The process diagram of a binary power plant with an ORC-process, utilizing geothermal energy, is presented in figure 1 below. Generator efficiency is 94%, generator output power is 180 kW and evaporator heat power is 2590 kW. Calculate the turbine output power. Round off your answer to one an integer. Heat into process Evaporator Turbine G Feed pump Figure 1. Process diagram of the binary power plant. Generator Condenser

23.a. Which one of the following devices can be used to accurately and conveniently measure the speed of amotor with a small slip?A. TachometerB. Revolution counter and stop watchC. Incandescent lamp and colored diskD. Stroboscope23.b. Core loss can be described asA. due to hysteresis and eddy currents in the iron parts.B. directly dependent on the load.C. caused by insufficient ventilation in the machine.D. due to eddy currents in the windings.

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