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Figure P7.1 shows a schematic diagram of a stepper motor. What type of stepper is this? Describe the operation of this motor. In particular, discuss whether four separate phases are needed or whether the phases of the opposite stator poles may be connected together, giving a two-phase stepper. What is the step angle of the motor
(a) In full-stepping?
(b) In half-stepping?
Figure P7.1
in an air-standard otto cycle the air at the beginning of the compression stroke is at 95 kpa and 22 degrees c and the
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Methane gas at 25°C, 1 atm enters a reactor operating at steady state and burns with 80% of theoretical air entering at 227°C, 1 atm. An equilibrium mixture of CO2, CO, H2O(g), H2, and N2 exits at 1427°C, 1 atm. Determine, per kmol of methane ent..
Question: (a) Polystyrene has a yield stress of 30 MPa. The material is subjected to a 20 MPa tensile load. Will the material behave elastically? (b) Explain what exactly is occurring during polymer creep.
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An 8-kg plunger is released from rest in the position shown and is stopped by two nested springs; the constant of the outer spring is k1 = 4 kN/m and the constant of the inner spring is k2 = 12 kN/m. If the plunger is released from the height
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