PROBLEM 3.109 The magnitude of the torque T applied to the tapered shaft of Prob. 3.108 is slowly increased. Determine (a) the largest torque that may be applied to the shaft, (b) the length of portion BE that remains fully elastic. PROBLEM 3.108 A shaft of mild steel is machined to the shape shown and then twisted by torques of magnitude 40 kip · in. Assuming the steel to be elastoplastic with ?Y = 21 ksi, determine (a) the thickness of the plastic zone in portion CD of the shaft, (b) the length of portion BE that remains fully elastic.
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
Technician A says that most hydromechanical rotary-distributor diesel injection pumps are used to fuel small bore engines. Technician B says that most hydromechanical rotary-distributor diesel injection pumps are used in older indirect injection (IDI) diesel applications. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
Obtain v?(t) for the op amp circuit in Fig. 10.123 if vs = 12cos (1000t - 60°) V.
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Technician A says that a pressure check valve should hold system pressure for at least five minutes after the pump is shut off. Technician B says that a defective check valve could cause long cranking time. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician