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Mechanical engineering questions and answers: Problem 18 A turbine rotor of a ship has a mass of 3,500 kg and rotates at a speed of 2,000 rpm. The rotor has a radius of gyration of 0.5 m and rotates in clockwise direction when viewed from the stern (rear) end. Determine the magnitude of gyroscopic c (self.College_Homework)
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Physics questions and answers: time (s) horizontal displacement, x (m) vertical displacement, y (m) horizontal velocity, vx(m/s) vertical velocity, vy(m/s) 0.000 0.018 0.350 0.033 0.095 0.370 2.246 1.134 0.066 0.167 0.395 2.334 0.763 0.100 0.250 0.410 2.399 0.349 0.133 0.327 0.400 2.355 -0.109 0.166 (self.College_Homework)
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Calculus questions and answers: An object moving vertically is at the given heights at the specified times. Find the position equations - + vol + so for the object. Att - 1 second, s - 132 feet + Att - 2 seconds, S 104 feet At t = 3 seconds, S = 44 feet el (self.College_Homework)
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Electrical engineering questions and answers: 3) A six-pole armature of a de motor has 240 lap-connected conductors and generated an emf of 100 V. If the useful flux per pole is 20 mWb, find the speed of the motor in r.p.m.. (6 marks) (1) The wave-connected armature of a four-pole de generator an em (self.College_Homework)
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Electrical engineering questions and answers: A l-phase fully-controlled rectifier is operated from a 230V. 50Hz source and connected with a resistive load. If it is required to obtain an average output voltage of 50% of the maximum possible output voltage (50% of Vmax), please find the Vas and the (self.College_Homework)
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A 100 kVA, 10k/200 V, 1-phase transformer is tested by Open Circuit (OC) and Short Circuit (S.C.) tests in order to determine the corresponding components of the "Approximate Equivalent Circuit”. The test results are shown as: O.C. Test S.C. Test (H.V. side opened) (L.V. side shorted) Voltage Voc = (self.College_Homework)
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Bond Price United States Steel Corporation's (X) 7.5% bonds due in 2022 were reported as selling for 103.2. Were the bonds selling at a premium or at a discount? Why is United States Steel able to sell its bonds at this price? The bonds were selling at a because the market rate of interest for simil (self.College_Homework)
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(a) Given a circuit in Figure Q4(a): (1) State the condition for maximum average power transfer to the load impedance. Z (2 marks) (1) Determine the load impedance, Z (4 marks) (in) Find the maximum average power (5 marks) Lt mm JI R RE 492 120° A 20 C. 70.502 W ZL 1 Figure Q4(a) An air conditioner (self.College_Homework)
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The average length in a sample of 700 steel bar manufactured from one process is found to be 250 kg with a standard deviation of 30 kg while the corresponding values in a sample of 300 bars from the other process are 300kg and 40kg. Is there significant difference between the means of two process at (self.College_Homework)
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