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Strength of Materials Multiple Choice Questions | MCQs | Quiz

Strength of Materials Interview Questions and Answers
Pratice Strength of Materials questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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•   Strain
•   Elasticity
•   Hooke's Law
•   Stress & Strain Curve
•   Strain Properties
•   Strain Constants - 1
•   Strain Constants - 2
•   Elastic Constants - 1
•   Elastic Constants - 2
•   Normal & Shear Stress
•   Bending Stress
•   Tensile Stress
•   Compressive Stress
•   Thermal Stress
•   Stress Applications
•   Varying Sections Bars
•   Superposition Principle
•   Composite Sections Bars-1
•   Composite Sections Bars-2
•   Strain Energy Definition
•   Resilience
•   Sudden Loading
•   Gradual Loading
•   Impact Loading
•   Center of Gravity
•   Section Gravity Center
•   Moment of Inertia
•   Section Moment of Inertia
•   Mass Moment of Inertia
•   Beams & Loads Types
•   Shear & Bending Moment
•   Supports Types
•   Maximum Shear Force
•   Maximum Bending Moment
•   Bending Moment Diagram
•   Bending Equation
•   Pure Bending Stress
•   Section Modulus
•   Section Strength
•   Unsymmetrical Sections
•   Composite Beams
•   Shear Stress Basics
•   Shear Stress Distribution
•   Maximum Shear Stress - 1
•   Maximum Shear Stress - 2
•   Combined Stress
•   ↓ Bending Stress ↓
•   Eccentric Loading
•   Eccentric in Both Directions
•   Section Kernel
•   Dams
•   Rectangular Dam
•   Rectangular Dam Analysis
•   ↓ Trapezoidal Dam ↓
•   Vertical Side Phase
•   Inclined Side Phase
•   Dams Stability Analysis
•   Slope
•   Deflection
•   Cantilever Deflection
•   Simply Support Deflection
•   Beams Analyse Slope
•   Analyse Propped Cantilever
•   Propped Deflection
•   Analyse Fixed Beam
•   Fixed Beam Deflection
•   Indeterminate Beam
•   Beam Deflection
•   Torque Definition
•   Torsion Equation
•   Twisting Moment
•   Inertia Polar Moment
•   Torsional Rigidity
•   Combined Bending
•   Power Shaft
•   Composite Shaft
•   Frames Stresses - 1
•   Frames Stresses - 2
•   ↓ Thin Cylinders ↓
•   Thin Cylinders
•   Internal Pressure
•   Hoop Stress
•   Longitudinal Stress
•   Stress - Cylinder Surface
•   Thin Cylinder - Strain
•   Maximum Shear Stress
•   ↓ Thin Spherical Shells ↓
•   Shells Under Stress
•   Shells Under Strain
•   Thick Cylinder Shell
•   Trusses - 1
•   Trusses - 2
•   Column Definition
•   ↓ Euler's Theory ↓
•   At Critical Load
•   At Eccentrically Loaded
•   Columns Design
•   ↓ Rankine's Theory ↓
•   Column Rankine's Theory
•   Buckling & Crushing Load
•   Slenderness Ratio
•   Core Cross Section
•   Shear Failure
•   Rivet Joint
•   Rivet Lap Joint
•   Strain Energy

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Strength of Materials Questions and Answers – Maximum Shear Stress – 1

Posted on December 15, 2017 by Manish

This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on “Maximum Shear Stress – 1”.

1. Shear stress at top most fibre of rectangular section is _____
a) Maximum
b) Minimum
c) Zero
d) Uniform through out
View Answer

Answer: c
Explanation: In rectangular section,
The shear stress at a distance “y “from NA = 6F/bd3 × u (u = d2/4-y)
The maximum shear stress occurs at neutral axis, in the above equation when y is equal to zero. q is max. Hence the shear stress topmost fibre of rectangular section is zero.

2. 1 GPA = _____ pa.
a) 105
b) 106
c) 108
d) 109
View Answer

Answer: d
Explanation: 1 Giga Pascal is equal to 109N/m2(Pascal)
In the same way 1 kilo Pascal equal to 103 pascals
1 mega Pascal is equal to 106 pascals.

3. The maximum shear stress in an I section is
a) F/8I ×[B/b (D2-d2)+d2].
b) F/6I ×[B/b (D2-d2)+d2].
c) F/8I ×[B/b (D3-d3)+d2].
d) F/4I ×[B/b (D2-d2)+d2].
View Answer

Answer: a
Explanation: Shear stress at top flange of the I section is zero.
Shear stress at the junction of web and flange= B/b ×F/8I (D2-d2).
Shear stress at bottom of the flange = F/8I (D2-d2).
And shear force is maximum at neutral axis i.e F/8I ×[B/b (D2-d2)+d2].

4. Find the modulus of section of square beam of size 150 × 150 mm ?
strength-materials-questions-answers-maximum-shear-stress-q4
a) 654.5m3
b) 550.85m3
c) 562.5m3
d) 586.9m3
View Answer

Answer: c
Explanation: Here, a = side of a square section = 150 mm.
Moment of inertia for square section = a4/12; y=a/2.
Section modulus Z = I/y = a3/6 = 1503/6 = 562.5 ×103 mm3.

5. In steel sections, the junction between a flange and web is known as ________
a) Edge
b) Fillet
c) Corner
d) Lug
View Answer

Answer: b
Explanation: In a steel section, the junction between the flange and the web is known as fillet. The connections solve issues of complex geometry for joining the members of a central hub while they provide the standard connection through out. They are not readily available.

6. The percentage of carbon in structural steel is __________
a) 0.2 – 0.27 %
b) 0.6 – 0.85 %
c) 0.7 – 1.23 %
d) 1.23 – 1.45%
View Answer

Answer: a
Explanation: The percentage of carbon in structural steel is 0. 2 to 0.27. Percentage of the carbon in steel increases the ductility of the Steel decreases.

7. The minimum percentage elongation for mild steel is __________
a) 6%
b) 13%
c) 23%
d) 34%
View Answer

Answer: c
Explanation: The minimum percentage elongation for mild steel is 23% and the tensile strength of steel is usually taken as 42 to 54 kg/mm2.

8. GOST standards are used in _________
a) Italy
b) Poland
c) Russia
d) Pakistan
View Answer

Answer: c
Explanation: GOST is an acronym for gosudastvennyy standard used in Russia.
It usually carries two part number, one indicates serial number and other indicates year of issue
For example; GOST 155-70.

9. The allowable tensile stresses in steel structures is taken as 1500 kg /cm2 to ______
a) 1765 kg /cm2
b) 1900 kg /cm2
c) 2125 kg /cm2
d) 2455 kg/cm2
View Answer

Answer: c
Explanation: Steel structures are available in various sections such as rolled I beams, channels, angle iron, bars, flat plates etc. The allowable tensile stress in steel structures is 1500 kg /cm2 to 2125 kg /cm2.

10. As per IS:800, the minimum thickness of web should not be less than______
a) d/250
b) d/300
c) d/350
d) d/125
View Answer

Answer: a
Explanation: As per IS: 800, the minimum thickness of web should not be less than d/250; [Where d = clear distance between Flange angles]. In case of unstiffened web, the minimum thickness of web plate should not be less than d/85.

11. The failing of a very long column is initially by_____
a) Crushing
b) Collapsing
c) Buckling
d) Twisting
View Answer

Answer: c
Explanation: The members considerably long in comparison of lateral dimensions are called Long columns. The members essentially fail by buckling (or) crippling to bending. According to Euler’s formula the long column can be determined.

12. What is the allowable stress in cast iron?
a) 3200 N/mm2
b) 2400 N/mm2
c) 3400 N/mm2
d) 5500 N/mm2
View Answer

Answer: d
Explanation: The allowable stress in cast iron is 5500 N/mm2.

Position Stress (N/mm2) Rankine’s Constant
Mild steel 3200 1/7500
Wrought iron 2500 1/9000
Cast iron 5500 1/1600

13. Modulus of resilience is defined as __________
a) Resilience at ultimate stress
b) Resilience per unit volume
c) Resilience at proportional limit
d) Resilience at elastic limit
View Answer

Answer: b
Explanation: The resilience per unit volume is defined as modulus of resilience. It is a property of the material. The Modulus of resilience is equal to 1Mpa for Steel with the proportionality limit of 200 Mpa.

14. A spring used to absorb shocks and vibrations is called as_______
a) Conical spring
b) Leaf spring
c) Disc spring
d) Torsion spring
View Answer

Answer: b
Explanation: A leaf spring used to absorb shocks and vibrations and the springs in brakes and clutches are invariably used in order to apply forces.

15. A rectangular beam of 500 mm wide is subjected to maximum shear force of 250kN, the corresponding maximum shear stress been 3 N/mm2. The depth of the beam is equal to ______
strength-materials-questions-answers-maximum-shear-stress-q15
a) 200mm
b) 250mm
c) 300mm
d) 350mm
View Answer

Answer: b
Explanation: The maximum shear force in a rectangular section is 3N/mm2.
In rectangular sections; Maximum shear force = 3/2 ×[F/bd] & 3 = 3/2 ×[250 ×103/ 500 × d] d = 250mm.

Sanfoundry Global Education & Learning Series – Strength of Materials.

To practice all areas of Strength of Materials, here is complete set of 1000+ Multiple Choice Questions and Answers.

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