
EBK ELECTRICAL TRANSFORMERS AND ROTATIN
4th Edition
ISBN: 9781337025867
Author: Herman
Publisher: VST
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Chapter 17, Problem 20RQ
To determine
The nature of excitation current of synchronous motor.
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You design a pin joint. The pin is made of a material with the yield strength of 325
MPa and ultimate strength of 500 MPa. The maximum allowed stress in service is
expressed as a tensor
0
100 0
σ
100
0
0 MPa
0
0
Evaluate the safety factor SF for stress in this design.
Write answer unitless rounding to 2 decimal places and enter decimals even if those
are zeros.
2. A single crystal of aluminum is oriented for a tensile test such that its slip plane normal makes an angle of 28.1° with the tensile axis. Three possible slip directions make angles of 62.4°, 72.0°, and 81.1° with the same tensile axis. (a) Which of these three slip directions is most favored? (b) If plastic deformation begins at a tensile stress of σ x = 1.95 MPa (280 psi), determine the critical resolved shear stress for aluminium. (c) If this single crystalspecimen is loaded under the new stress state: σ x =1.2 MPa σ y = -0.8 MPa, and τ xy = 0.6 MPa, howmuch is the resolve the shear stress along the most favored slip direction?
Please explain how to do each part and tell me if my drawing is correct. thank you
Chapter 17 Solutions
EBK ELECTRICAL TRANSFORMERS AND ROTATIN
Ch. 17 - Prob. 1RQCh. 17 - Prob. 2RQCh. 17 - What is synchronous speed?Ch. 17 - What two factors determine synchronous speed?Ch. 17 - Name three factors that cause the magnetic field...Ch. 17 - Name three factors that determine the torque...Ch. 17 - Is the synchronous motor an induction motor?Ch. 17 - What is the amortisseur winding?Ch. 17 - Prob. 9RQCh. 17 - Prob. 10RQ
Ch. 17 - Prob. 11RQCh. 17 - Why can an induction motor never operate at...Ch. 17 - Prob. 13RQCh. 17 - Prob. 14RQCh. 17 - Prob. 15RQCh. 17 - Prob. 16RQCh. 17 - Prob. 17RQCh. 17 - Prob. 18RQCh. 17 - Prob. 19RQCh. 17 - Prob. 20RQCh. 17 - How is the speed of a consequent pole...Ch. 17 - A three-phase squirrel-cage motor is connected to...
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