Mechanical Engineering Multiple Choice Questions

Running head: MECHANICAL ENGINEERING MULTIPLE CHOICE QUESTION 1
Mechanical engineering Multiple Choice Questions
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MECHANICAL ENGINEERING MULTIPLE CHOICE QUESTION 2
1. A keyway in a shaft that's transmitting torque will experience mostly _______
stress.
A. tensile
B. torsional
C. biaxial
D. direct shear
A keyway in a shaft that is transmitting torque will experience mostly
2. If the calculated angle for the x-y plane in a Mohr's circle is 56°, the true angle
of the principal normal plane is _______ from the original σx axis.
A. −56°
B. 112°
C. 56°
D. 28°
3. Which of the following cannot be found after constructing Mohr's circle?
A. Maximum shear stresses and the orientation of the plane
B. Value of the normal stresses that act on the planes where the maximum shear stresses act
C. Maximum and minimum principal stresses
D. The hoop stresses that act on an element with any orientation
4. A stress element has 13,800 psi of tensile stress acting in the reference x-axis
and a counterclockwise shear stress of 5,600 psi acting at the same time. The
maximum principal stress on the element is approximately _______ psi.
A. 19,400
B. 8,200
C. 15,800
D. 2,000

MECHANICAL ENGINEERING MULTIPLE CHOICE QUESTION 3
5. The superposition principle is used
A. for calculating individual stresses.
B. only in special cases.
C. when the material is subject to both tensile and bending stresses.
D. while stress concentrations are present.
6. The property of a material that resists fatigue loading is known as the
A. stress ratio.
B. yield strength.
C. endurance strength.
D. creep.
7. Two ¼-inch OD support rods hold a uniformly distributed weight of 450
pounds. The tensile stress in each rod will be _______ psi.
A. 4584
B. 15,586
C. 9184
D. 49,000
8. When a beam is supported at both ends and loaded by a downward force in
the middle, the
A. maximum stress is at the ends of the beam.
B. top of the beam is in compression and the bottom of the beam is in tension.
C. stress is uniform throughout the beam.
D. top of the beam is in tension and the bottom is in compression.