# Strength of Materials Questions and Answers – Analyse Slope of Various Beams

This set of Strength of Materials Questions and Answers for Entrance exams focuses on “Analyse Slope of Various beams”.

1. A cantilever beam subjected to a point load at free end of span “l” m and possess flexural rigidity (EI).
a) Wl3 / 6EI
b) Wl4/ 8EI
c) Wl2/ 2EI
d) Wl4/ 5EI

Explanation: Area of BMD = A = Wl2/ 2.
According to Mohr’s theorem 1, slope (i) = A/EI = Wl2/ 2EI radians.

2. Cantilever scaffolding is also known as ____________
a) mason’s scaffolding
b) suspended scaffolding
c) needle scaffolding

Explanation: The cantilever scaffolding consists of platform supported by series of cantilever beams passing through window openings. They are used when it is not possible to fix the standards into the ground. It is also known as needle scaffolding.

3. Scaffolding you generally adopted when the height of structure is above ___________
a) 1.3 m
b) 1.5 m
c) 1.7 m
d) 2.2 m

Explanation: Scaffolding is a temporary platform provided with necessary supports close to the work to provide a limited space for the labours and workers for the construction of masonry work of any structure above 1.5 m.

4. The horizontal platform in between any two flights of a staircase is called ___________
a) Landing
c) Nosing
d) Stringer

Explanation: Landing in stair may be defined as the horizontal platform provided in between any two flights landing. Landing which provides 90 degree turn in the layout of a stair is known as quarter space landing.

5. The ratio of maximum load to the unit area is ________
a) Ultimate bearing capacity
b) Allowable bearing capacity
c) Safe bearing capacity
d) Bearing capacity

Explanation: The term bearing capacity of the soil is defined as the maximum load per unit area which the soil will resist safely without yielding or displacement.
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6. ______ is part of a structure which transmits the load to the soil underneath.
a) Basement
b) Plinth
c) Lentils
d) Foundation

Explanation: The lowest artificial built part of structure which transmits the load of the structure to the soil lying underneath. The foundation of a structure is always constructed below ground level. They distribute the load of structure over large bearing area. It increases the stability of the structure as a whole.

7. Full form of NBC ___________
a) Nominal Building Centre
b) National Building Code
c) National Building Cluster
d) Nominal Buoyance Centre

Explanation: NBC stands for National Building Code. According to NBC, all the buildings existing and in construction are classified into number of groups. The respective crystal details are followed with respective synapses.

8. The ultimate bearing capacity/factor of safety = ____________
a) Bearing capacity
b) Allowance bearing capacity
c) Safe bearing capacity
d) Soil consolidation capacity

Explanation: The safe bearing capacity of the soil is equal to ultimate bearing capacity divided by certain factor of safety. Roughly a factor of safety of 2 is used for most of the building sites and generally, a factor of safety of 2.5 to 3 is considered for heavy building constructions.

9. _____ is measured on percentage basis.
a) Camber
b) Formation width
c) Super elevation
d) Shoulder

Explanation: The rise given to the centre of the carriage way with reference to its edge can be termed as camber. It is expressed as 1 vertical to n horizontal. It is also measured along percentage basis.

10. ______ bridge any opening like a window, door, cupboard etc in a building.
b) Lintel
c) Footings
d) Stairs

Explanation: Lintel is a horizontal structural member spanning any opening to support loads of the structure coming over it.
i) To facilitate the fixing of doors and windows frames wherever.

11. The first solar cooker was developed in the year ____________
a) 1947
b) 1953
c) 1945
d) 1960

Explanation: The Solar cookers have a very relevant place in the present fuel consumption pattern. The first solar cooker was developed in the year 1945 by Mr M K Ghosh. The main reasons for non- acceptance of this device was a cheap availability of cooking fuel.

12. Solar arrays are defined in terms of ____________
a) Circuits
b) Diodes
c) Kernel
d) Panels

Explanation: The solar arrays are electrically defined in terms of circuits each of which contributes a portion of the total current output at some nominally specified array voltage.

13. In a cantilever of span “L” subjected to a concentrated load of “W” at a distance of L/3 from free end. The deflection is ________
a) WL3/3EI
b) 14WL3/81EI
c) WL3/81EI
d) 8WL3/81EI

Explanation: The deflection developed at the

y= W × ( 2L/3)3/ 3EI
y= 8WL3/81 EI.

14. Calculate the slope in a simply supported beam subjected to point load at centre. Take the EI into consideration.
a) Wl3/4EI
b) Wl2/16EI
c) Wl3/8EI
d) Wl4/6EI

Explanation: The slope in a beam can be determined by Mohr’s theorem 1: i = A/EI.
The BMD of beam portion will be Wl2/16.
The slope (i) = Wl2/16EI.

15. Which of the following is a mechanical property of materials?
a) Surface Tension
b) Compressibility
c) Elasticity
d) Specific volume

Explanation: The elasticity is the property by which the body returns to its original shape after the removal of external load. If a body regains completely its original shape is said to be a perfectly elastic material. Rubber, mild steel and copper may be considered to be perfectly elastic within certain limits.

Sanfoundry Global Education & Learning Series – Strength of Materials.

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