Engineering Questions with Answers - Multiple Choice Questions
Strength of Materials MCQs Euler’s Theory at Eccentrically Loaded
1 - Question
Long axially loaded columns tends to deflect about ___________
a) Moment of inertia
b) Effective length
c) Core
d) Safe loading
View Answer
Answer: a
Explanation: A long axially loaded column tends to deflect about the axis of least moment of inertia the least radius of gyration and it should be used for determining the slenderness ratio.
2 - Question
What is the effective length of a column at both ends fixed?
a) l/3
b) l
c) l/2
d) 2×l
View Answer
Answer: c<br />
Explanation: The effective length of a column at both ends fixed is L =l/2.
| End condition | Effective length |
| Both ends hinged | L = l |
| Both ends fixed | L =l/2 |
3 - Question
Which of the following is the method of removing the temporary hardness of water?
a) Lime soda method
b) Base exchange process
c) Boiling
d) Chlorinatio
View Answer
Answer: c
Explanation: When the water is boiled up to a temperature of 80 degree, most of the bacteria will be killed and bicarbonates of calcium and magnesium are also eliminated.
4 - Question
The application of chlorine beyond the stage of break point is _________
a) Double chlorination
b) Post pollination
c) Super chlorination
d) Breakpoint chlorination
View Answer
Answer: c
Explanation: Super chlorination is a term which indicates the addition of an excessive amount of chlorine that is 5 to 15 mg / l to the water that is the application of chlorine beyond the stage of break point.
5 - Question
Which of the following methods of disinfection is usually adopted in swimming pools?
a) Excess lime treatment
b) Iodine – Bromine method
c) Pottasium permanganate method
d) Ultraviolet rays method
View Answer
Answer: d
Explanation: Ultraviolet rays are highly disinfectants and kill the bacteria. The rays penetrate in water and kill the bacteria. This process is very costly and requires technical skill and costly equipment. This method is adapted generally in swimming pools.
6 - Question
Hardness due to calcium bi carbonate can be removed by ___________
a) Boiling
b) Excessive lime
c) Zeolite
d) Soda treatment
View Answer
Answer: b
Explanation: Lime is generally used as a water purification material the excess lime treatment of water about 99.9% to 100%. The lime excess line l is the pH value of water making extremely alkaline.
7 - Question
__________ is used for spans ranging from 9 m to 15 m.
a) King post truss
b) Queen post truss
c) Coral truss
d) Roof truss
View Answer
Answer: b
Explanation: Queen post truss is used for spans 9 m to 15 m. It consists of principal rafters, common rafters, purlins. The queen posts are connected with the help of a straining beam.
8 - Question
__________ is provided to prevent the movement of the post due to loads in Queen post truss.
a) Purlin
b) Eaves board
c) Straining beam
d) Ridge beam
View Answer
Answer: c
Explanation: The queen posts are connected with the aid of straining been of the upper ends and by a straining sill at the lower end to prevent the movement of post due to loads. In this truss, the straining beam acts as a compression member. Whereas the queen post act as a tension member.
9 - Question
___________ is a combination of king post truss and queen post truss.
a) Steel slope truss
b) Pratt truss
c) Mansard roof truss
d) Fan truss
View Answer
Answer: c
Explanation: Mansard truss is a combination of king post truss and queen post truss. This truss is used to obtain the maximum space for living purposes. The general height of the roof is comparatively kept low.
10 - Question
In mansard truss, the upper slope is _________
a) 45°
b) 30°
c) 60°
d) 90°
View Answer
Answer: b
Explanation: The mansard has two different slopes, the lower slope should not be steeper than 75° and upper slope not greater than 30 degrees. The construction of the various joints is similar to the king post and queen post trusses.
11 - Question
_______ trusses are generally adopted for greater fans.
a) Timber
b) Cast Iron
c) Steel
d) AC
View Answer
Answer: c
Explanation: The Steel trusses are adopted for greater spans as the timber trusses become heavy and uneconomical. Steel trusses are much stronger than timber trusses and are more fire resisting and durable. They cannot be attacked by white ants.
12 - Question
Steel trusses are generally constructed with __________
a) Mild steel
b) HYSD steel
c) TMT steel
d) JSW steel
View Answer
Answer: a
Explanation: Generally, most of the Steel trusses are fabricated and constructed with mild steel. They consist of angles because the angle sections can effectively resist both compressive and tensile stresses.
13 - Question
__________ consists generally of single or double angles.
a) Strut
b) Column
c) Pillar
d) Stanchion
View Answer
Answer: a
Explanation: Angles can be manufactured economically instead of T sections for rafters. Strut consists of generally single or double angles, one or two angles back to back can be used as a tie beam.
14 - Question
A queen closer is placed after ______ in the heading course.
a) Quoin header
b) Brick bat
c) Header
d) Stretcher
View Answer
Answer: a
Explanation: The length of queen closer is usually kept equal to thickness of the wall. A queen closer is placed after every quoin header in a heading course, when the thickness of wall is 200 mm or above.
15 - Question
The size of frog in bricks is ___________
a) 10×4×4 cm
b) 10×9×4 cm
c) 10×4×1 cm
d) 9×9×4 cm
View Answer
Answer: c
Explanation: The depression provided on the size of brick during its manufacture is called the frog. According to BIS, the size of the frog in brick is 10×4×1 cm. Frog reduces the weight of a brick, to lay conveniently.