This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on “Stresses in Frames – 1”.
1. _________ is a structure made up of several members connected to each other.
b) Form work
Explanation: Frame is a structure made up of several members riveted and welded together. The members of the frame are made in such a way that the form angle iron or channel sections.
2. A frame which is composed of members just sufficient to keep it in equilibrium, such frame is ___________
a) Redundant frame
b) Perfect frame
c) Imperfect frame
d) Deficient frame
Explanation: A perfect frame is 1 for which the following equation is satisfied m = 2j-3.
A perfect frame is that which is composed of members just sufficient to keep it in equilibrium, when loaded without any change.
3. In the equation m = 2j-3 ; the letter “j” stands for __________
Explanation: In the equation m= 2j-3
Where, m = number of members
J = number of joints
“If this equation gets satisfied then the frame for which the equation has setup is perfect frame “.
4. In statically determinate structures _______ is independent.
a) Shear force
b) Bending moment
c) Shear stress
d) Axial load
Explanation: If conditions of equilibrium are sufficient to analyse the structure fully, then it is statically determinate structure. In this bending moment at a section is independent of the material of the components of the structure.
5. What is the splay provided in splayed wing walls?
Explanation: Splayed wing walls permit smooth entry and exit of water under bridge. The splay is usually provided of 45°. The weep holes are also provided.
6. The wing wall resembling the letter “U” in plan, is ___________
a) Return wing wall
b) Approach wing wall
c) Splayed wing wall
d) Straight wing wall
Explanation: The return wing walls resemble the letter “U” in plan wing walls are parallel to the centre line of the bridge. It is used where rivers having steep and rocky banks and not subjected to erosion of soil.
7. __________ coat develop resistant texture.
a) Prime coat
b) Seal coat
c) Tack coat
d) Open coat
Explanation: Seal code is final coat lay over a bituminous pavements which are not impervious. Seal coat develops skid resistant texture and they provide better riding surface.
8. Which of the following roads (pavements) does not develop any corrugations ?
c) Water bound macadam
Explanation: Concrete road is suitable even under poor sub grades. It is not develop any corrugations and its maintenance cost is low.
9. Which of the following is the weakest part in the railway track?
a) Rail joint
Explanation: The joint which is made between two rails together with two fish plates and four fish bolts to form an expansion gap of 1.5 to 3 mm. Rail joint is the weakest part in the railway track.
10. Sabotage problem is eliminated in _______
a) Round spike
b) Dog spike
c) Screw spike
d) Polar spike
Explanation: Holding capacity of rails to sleepers is more and costly. Hence screw spike is used in driving and extraction. Though it is costly and time consuming, the sabotage problem is eliminated due to screw spike.
11. ________ are made of high carbon steel to withstand heavy stresses.
a) Fish plates
b) Fish bolts
Explanation: For each rail joint, four fish bolts are required to connect fish plates and rails together. Fish bolts are made of medium or high carbon steel to which stand heavy stresses.
12. For each sleeper _______ pandrol clips are used.
Explanation: Pandrol clip is made of silicon manganese spring steel bar of 20.6 mm diameter and heat treated. It exerts a toe load of 6.97 kN. For each sleeper four pandrol clips are used.
13. The Wheels of Rolling stock have slope ________
a) 1 in 10
b) 1 in 15
c) 1 in 20
d) 1 in 30
Explanation: The wheels of rolling stock are made in the shape of a frustum of a cone having a slope of 1 in 20 is known as coning of wheels. The objective of coning of wheels is to prevent lateral movement of trains in straight track.
14. ________ are transverse ties on which the rails are laid.
Explanation: Sleepers are transverse ties on which the rails are laid and transfer the load from rails to ballast. The main function of sleeper is to provide a firm and even support to rails.
15. _______ permits track circuiting.
Explanation: The sleepers should be capable of resisting vibrations and shocks due to fast moving trains. The fastenings used to fix rails to sleepers should be minimum. The sleepers should permit track circuiting.
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.