# Multiple Choice Questions (MCQ) with Answers on Compound stresses

**Multiple Choice Questions (MCQ) with Answers on Compound stresses**

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**1-Principal planes are those planes on which**

- Normal stress is maximum
- Normal stress is minimum
- Normal stress is either maximum or minimum
- Shear stress is maximum

(Ans: c)

**2-In a general two dimensional stress system, there are**

- Two principal planes
- Only one plane
- Three principal planes
- No principal plane

(Ans: a)

**3-Principal planes are mutually inclined at**

- 45 degree
- 60 degree
- 90 degree
- 180 degree

(Ans: c)

**4-In a general two dimensional stress system, planes of maximum shear stress are inclined at ___ with principal planes.**

- 90 degree
- 180 degree
- 45 degree
- 60 degree

(Ans: c)

**5-In a general two dimensional stress system, the planes on which shear stress is zero**

- The normal stress is minimum
- Normal stress is zero
- Normal stress is either maximum or minimum
- None of these

(Ans: c)

**6-Angle of obliquity is defined as**

- Angle between the plane on which stresses are evaluated and one of the given planes
- Angle between resultant stress and the plane of given normal stress
- Angle between resultant stress and shear stress
- Angle between resultant stress and normal stress

(Ans: d)

**7-Mohr’s stress circle is named so because it has equation of the form**

- x^2 + y^2 = r^2
- (x-a)^2 + y^2 = r^2
- (x-a)^2 + (y-b)^2 = r^2
- It was desired by German Engineer Otto Mohr

(Ans: b)

**8-Ellipse of stress is used to find**

- Resultant stress on any plane in a bi-axial stress system
- Resultant stress on any plane in a general two dimensional system
- Maximum shear stress
- Location of planes of maximum shear stress

(Ans: a)

**9-In Mohr’s circle of strain, y-axis represents**

- Shear strain
- Half of shear strain
- Normal strain
- Half of normal strain

(Ans: b)

**10-In a general two dimensional stress system, Ellipse of stress can find**

- Principal planes
- Principal stresses
- Planes of maximum shear stress
- Resultant stress on any plane

(Ans: d)