Abiomass power generation plant is located in baltimore, maryland. the plant owner desires to connect this plant to the electric grid. the grid voltage at the point of connection is 12,000 volts. in order to synchronize with the grid, the plant electric generator voltage output has to been within +/- 0.05% of the grid voltage and the output frequency has to be within +/-0.02% of the grid voltage frequency.
a) what is the acceptable range of generator output voltage?
b) what is the acceptable range of the generator output voltage frequency?
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Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

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