# Strength of Materials

## Trending Questions

**Q.**Parallelogram law of forces states that if two forces acting simultaneously at a point be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by

- longer side of the other two sides
- shorter side of the other two sides
- diagonal of the parallelogram which does not pass through their point of intersection
- diagonal for the parallelogram which passes through their point of intersection

**Q.**In a thin cylindrical shell, the ratio of longitudinal stress to hoop stress is

- 0.5
- 1.0
- 1.5
- 2.0

**Q.**

Given:

$\left(1\right){\mathrm{Cu}}^{2+}+2{\mathrm{e}}^{-}\u0101\x86\x92\mathrm{Cu},\mathrm{E}\u0100\xb0=0.337\mathrm{V}\phantom{\rule{0ex}{0ex}}\left(2\right){\mathrm{Cu}}^{2+}+{\mathrm{e}}^{-}\u0101\x86\x92{\mathrm{Cu}}^{+},\mathrm{E}\u0100\xb0=0.153\mathrm{V}$.

What will be the Electrode potential E for the reaction: ${\mathrm{Cu}}^{+}+{\mathrm{e}}^{-}\u0101\x86\x92\mathrm{Cu}$

0.30 V

0.38 V

0.52 V

0.90 V

**Q.**

What is mechanical force?

**Q.**A propped cantilever beam of span ' L' is loaded with u.d.l of intensity w/unit length, all through the span. Bending Moment at the fixed end is

- WL2/8
- WL2/2
- WL2/12
- WL2/24

**Q.**The relationship between Young's Modulus E, Modulus of Rigidity C and Bulk Modulus K in an elastic material is given by the relation

- E=9KC3K+C
- E=3KC3K+C
- E=9KC9K+C
- E=3KC9K+C

**Q.**

Modulus of rigidity of ideal liquids is

infinity

zero

unity

some finite small non - zero

**Q.**The stiffness of a spring is

- Load per coil of the spring
- Load required to produce unit deflection
- Load required to compress the spring up to shearing proportional limit.
- The load required for breaking the spring.

**Q.**

What is the difference between a thin cylinder and a thick cylinder?

**Q.**For simply supported beams, the allowable deflection shall not exceed:

- 1/325 of span
- 1/350 of span
- 1/375 of span
- 1/400 of span

**Q.**A propped cantilever beam of span 'L' is loaded with uniformly distributed load of intensity w/unit length, all through the span. Bending moment at the fixed end is

- WL28
- WL22
- WL212
- WL224

**Q.**A beam of overall length l with equal overhangs on both sides, carries a uniformly distributed load over the entire length. To have numerically equal bending moments at the centre of the beam and at its supports, the distance between the supports should be

- 0.277 l
- 0.403 l
- 0.586 l
- 0.707 l

**Q.**What is the ratio of maximum shear stress to average shear stress for a circular section?

- 2
- 2/3
- 4/3
- 3/4

**Q.**A simply supported beam is subjected to a uniformly distributed load of intensity w per unit length, on half of the span from one end. The length of the span and the flexural stiffness are denoted as l and EI respectively. The deflection at mid-span of the beam is

- 56144wl4EI
- 5768wl4EI
- 5384wl4EI
- 5192wl4EI

**Q.**For a circular column having its ends hinged, the slenderness ratio is 160. The 1/d ratio of the column is

- 80
- 57
- 40
- 20

**Q.**When a thin cylindrical shell is subjected to an internal pressure, there will be

- A decrease in diameter and length of the shell
- An Increase in diameter and decrease in length of the shell
- A decrease in diameter and increase in length of the shell
- None of these

**Q.**

A cable breaks if stretched by more than $2mm$. It is cut into two equal parts. How much either part can be stretched without breaking?

$0.25m$

$0.5mm$

$1mm$

$2mm$

**Q.**A rectangular beam of width 200 mm and depth 300 mm is subjected to a shear force of 200 kN. The maximum shear stress produced in the beam is

- 10.0MPa
- 7.5 MPa
- 5.0 MPa
- 3.33 MPa

**Q.**A hollow circular shaft has an outer diameter of 100 mm , inner diameter of 50mm and a wall thickness of 25 mm. The allowable shear stress in the shaft is 125 MPa. The maximum torque the shaft can transmit is

- 46 kN m
- 24.5 kN m
- 23 kN m
- 11.5 kN m

**Q.**In terms of bulk modulus (K) and modulus of rigidity (G), Poisson's ratio can be expressed as

- 3K−4G6K+4G
- 3K+4G6K−4G
- 3K−2G6K+2G
- 3K+2G6K−2G

**Q.**The maximum and minimum shear stresses in a hollow circular shaft of outer diameter 20 mm and thickness 2 mm, subjected to a torque of 92.7 N.m will be

- 59 MPa and 47.2 MPa
- 100 MPa and 80 MPa
- 118 MPa and 160 MPa
- 200 MPa and 160 MPa

**Q.**A rectangular beam of width 100 mm is subjected to a maximum shear force of 60 kN. The corresponding maximum shear stress in the cross-section is 4N/mm2. The depth of the beam should be

- 200 mm
- 150 mm
- 100 mm
- 225 mm

**Q.**The width of the strongest beam of rectangular section that can be cut out of a cylindrical log of wood whose diameter is 300 mm would be

- 104.5 mm
- 156.2 mm
- 202.6 mm
- 173.2 mm

**Q.**A cantilever beam of length L is subjected to a moment M at the free end. The moment of inertia of the beam cross section about the neutral axis is I and the young's modulus is E. The magnitude of the maximum deflection is

- ML22EI
- ML2EI
- 2ML2EI
- 4ML2EI

**Q.**The maximum deflection of a fixed beam carrying a central load W is equal to

- WL3484EI
- WL396EI
- WL3192EI
- 5384WL3EI

**Q.**

What is angle of twist?

**Q.**

Define strain energy and derive the equation for the same.

**Q.**For a simply supported beam on two end supports, the bending moment is maximum

- usually on the supports
- always at mid span
- where there is no shear force
- where the deflection is maximum

**Q.**For the overhanging beam shown in figure, the magnitude of maximum bending moment (in kNm) is

- 40

**Q.**A timber beam is 100 mm wide and 150 mm deep. The beam is simply supported and carries a central concentrated load W. If the maximum stress in shear is 2N/mm2, what would be the corresponding load W on the beam?

- 20 kN
- 30 kN
- 40 kN
- 25 kN