EBK ELECTRICAL TRANSFORMERS AND ROTATIN
4th Edition
ISBN: 9781337025867
Author: Herman
Publisher: VST
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Chapter 20, Problem 2RQ
To determine
The indication shown by letter J on the nameplate of the 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 20 Solutions
EBK ELECTRICAL TRANSFORMERS AND ROTATIN
Ch. 20 - Prob. 1RQCh. 20 - Prob. 2RQCh. 20 - Prob. 3RQCh. 20 - A motor nameplate indicates an insulation...Ch. 20 - What is the most common NEMA design code found on...Ch. 20 - A motor develops 225 ft-lb of torque at 860 RPM....Ch. 20 - The nameplate of a motor lists the frame as 256T....Ch. 20 - A motor develops 189 ft-lb of torque at 1745 RPM....Ch. 20 - Prob. 9RQCh. 20 - A motor nameplate lists the voltage as...
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