Physics, 24.06.2019 16:10, m8v3ngang3
The inductances of two mutually coupled coils are: l11 = a = l22 and l12 = l21 = b cos θ , where a and b are constants. the windings are both connected to two source currents i1 and i2. (a) derive an expression for the electromagnetic torque as a function of θ, i1, and i2. (b) find the developed electromagnetic torque for i1 = i0 and i2 = 0. (c) find the developed electromagnetic torque for i1 = i2 = i0. (d) find the developed electromagnetic torque for i1 = im sin ωt and i2 = i0. (e) (i) find the developed electromagnetic torque for i1 = i2 = im sin ωt. (ii) find the value(s) of speed ωm at which the machine will develop an average torque if θ = ωmt - δ. (iii)find the maximum torque and power (mechanical) that could be developed by the machine at each speed. (f) (i) find the developed electromagnetic torque for i1 = im sin ωt and i2 = im cos ωt.. (ii) find the value(s) of speed ωm at which the machine will develop an average torque if θ = ωmt - δ. (iii)find the maximum torque and power (mechanical) that could be developed by the machine at each speed. (b) find the developed electromagnetic torque for i1 = i0 and coil 2 is short-circuited.
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Physics, 22.06.2019 07:20, aliviafrancois2000
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Physics, 22.06.2019 16:00, trevorhenyan51
Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?
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Physics, 22.06.2019 17:00, QueenNerdy889
Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.
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Physics, 22.06.2019 18:00, NotYourStudent
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The inductances of two mutually coupled coils are: l11 = a = l22 and l12 = l21 = b cos θ , where a...
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