Objective Questions and Answer: Mechanics & Strength of Materials 12

Subject: Mechanics & Strength of Materials 12

**Part 12: Objective questions and answers of Mechanics & Strength Of Materials**

**Q1. When a body is subjected to a direct tensile stress in one plane, the maximum shear stress is _____ the maximum normal stress.**

a) Equal to

b) One-half

c) Two-third

d) Twice

**Q2. Principle plane is a plane on which the shear stress is**

a) Zero

b) Minimum

c) Maximum

d) None of the above

**Q3. The maximum shear stress is ______ the algebraic difference of maximum and minimum normal stresses.**

a) Equal to

b) One-fourth

c) One-half

d) Twice

**Q4. The maximum shear stress is equal to ______ of the Mohr's circle.**

a) Radius

b) Diameter

c) Circumference

d) Area

**Q5. Mohr's circle is used to determine the stresses on an oblique section of a body subjected to**

a) Direct tensile stress in one plane accompanied by a shear stress

b) Direct tensile stress in two mutually perpendicular directions

c) Direct tensile stress in two mutually perpendicular directions accompanied by a simple shear stress

d) All of the above

**Q6. The extremities of any diameter on Mohr's circle represent**

a) Principal stresses

b) Normal stresses on planes at 45 degree

c) Shear stresses on planes at 45 degree

d) Normal and shear stresses on a plane

**Q7. The energy stored in a body when strained within elastic limit is known as**

a) Resilience

b) Proof resilience

c) Strain energy

d) Impact energy

**Q8. The total strain energy stored in a body is termed as**

a) Resilience

b) Proof resilience

c) Impact energy

d) Modulus of resilience

**Q9. Strain energy is the**

a) Energy stored in a body when strained within elastic limits

b) Energy stored in a body when strained up to the breaking of a specimen

c) Maximum strain energy which can be stored in a body

d) Proof resilience per unit volume of a material

**Q10. The strain energy stored in a body, when suddenly loaded, is ______ the strain energy stored when same load is applied gradually**

a) Equal to

b) One-half

c) Twice

d) Four times

**Q11. Resilience is the**

a) Energy stored in a body when strained within elastic limits

b) Energy stored in a body when strained up to the breaking of a specimen

c) Maximum strain energy which can be stored in a body

d) Proof resilience per unit volume of a material

**Q12. The stress induced in a body, when suddenly loaded, is ______ the stress induced when the same load is applied gradually.**

a) Equal to

b) One-half

c) Twice

d) Four times

**Q13. The strain energy stored in a spring, when subjected to maximum load, without suffering permanent distortion, is known as**

a) Impact energy

b) Proof resilience

c) Proof stress

d) Modulus of resilience

**Q14. The capacity of a strained body for doing work on the removal of the straining force, is called**

a) Strain energy

b) Resilience

c) Proof resilience

d) Impact energy

**Q15. Which of the following statement is correct?**

a) The energy stored in a body, when strained within elastic limit is known as strain energy

b) The maximum strain energy which can be stored in a body is termed as proof resilience

c) The proof resilience per unit volume of a material is known as modulus of resilience

d) All of the above

**Q16. A beam which is fixed at one end and free at the other end is called**

a) Simply supported beam

b) Fixed beam

c) Overhanging beam

d) Cantilever beam

**Q17. A beam extending beyond the supports is called**

a) Simply supported beam

b) Fixed beam

c) Overhanging beam

d) Cantilever beam

**Q18. A beam encastered at both the end is called**

a) Simply supported beam

b) Fixed beam

c) Cantilever beam

d) Continuous beam

**Q19. A beam supported on more than two supports is called**

a) Simply supported beam

b) Fixed beam

c) Overhanging beam

d) Continuous beam

**Q20. A cantilever beam is one which is**

a) Fixed at both ends

b) Fixed at one end and free at the other end

c) Supported at its ends

d) Supported on more than two supports

**Part 12: Objective questions and answers of Mechanics & Strength Of Materials**

Q1. Answer b

Q2. Answer a

Q3. Answer c

Q4. Answer a

Q5. Answer d

Q6. Answer b

Q7. Answer c

Q8. Answer a

Q9. Answer a

Q10. Answer d

Q11. Answer a

Q12. Answer c

Q13. Answer b

Q14. Answer b

Q15. Answer d

Q16. Answer d

Q17. Answer c

Q18. Answer b

Q19. Answer d

Q20. Answer b