Situation 24: The shaft is made of A992 steel (G = 75 GPa) and has an allowable shear stress of taow = 75 MPa and the allowable angle of twist of gear A relative to C is 0.03 rad. When the shaft is rotating at 300 rpm, the motor at C supplies 8 kW of power, while gears A and B withdraw 5 kW and 3 kW, respectively. 300 mm 300 mm B 72. Determine the torque in motor C. a. 254.7 N-m b. 159.2 N-m 73. Determine the torque in gear A. a. 254.7 N-m b. 159.2 N-m 74. Determine the required diameter of the shaft. a. 24 mm b. 26 mm 245.7 N-m C. d. 195.2 N-m с. 245.7 N-m d. 195.2 N-m C. d. 28 mm 30 mm

Situation 24: The shaft is made of A992 steel (G = 75 GPa) and has an allowable shear stress of taow = 75 MPa and the allowable angle of twist of gear A relative to C is 0.03 rad. When the shaft is rotating at 300 rpm, the motor at C supplies 8 kW of power, while gears A and B withdraw 5 kW and 3 kW, respectively. 300 mm 300 mm B 72. Determine the torque in motor C. a. 254.7 N-m b. 159.2 N-m 73. Determine the torque in gear A. a. 254.7 N-m b. 159.2 N-m 74. Determine the required diameter of the shaft. a. 24 mm b. 26 mm 245.7 N-m C. d. 195.2 N-m с. 245.7 N-m d. 195.2 N-m C. d. 28 mm 30 mm

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Combined Loading

Any functioning component, such as machine parts, structural members, pressure vessels, and so on, are all under the influence of more than one force. When anybody is under the influence of more than one force such as shear forces, bending moments, axial forces, torsion, and so on, then such body is said to be under combined loading. A very practical example of combined loading is the crankshaft of an internal combustion engine (IC engine). The crankshaft of the IC engine is under high rpm, which is caused due to the torsional forces. Due to the presence of piston, counterbalances, and internal imbalances, the crankshaft experiences lateral forces and due to the rise in temperature, the crankshaft undergoes thermal expansion, which pulls the crankshaft along the axial direction and lateral direction. The presence of unbalanced loads along the periphery of the crankshaft also induces a bending moment.

Question

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Situation 24: The shaft is made of A992 steel (G = 75 GPa) and
has an allowable shear stress of Talow = 75 MPa and the allowable
angle of twist of gear A relative to C is 0.03 rad. When the shaft is
rotating at 300 rpm, the motor at C supplies 8 kW of power, while
gears A and B withdraw 5 kW and 3 KW, respectively.
300 mm
300 mm
B
72. Determine the torque in motor C.
C.
d.
a. 254.7 N-m
245.7 N-m
b. 159.2 N-m
195.2 N-m
73. Determine the torque in gear A.
a. 254.7 N-m
C.
245.7 N-m
b. 159.2 N-m
d.
195.2 N-m
74. Determine the required diameter of the shaft.
a. 24 mm
b.
28 mm
C.
d.
26 mm
30 mm

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