Engineering Questions with Answers - Multiple Choice Questions
Strength of Materials MCQs Analyse Propped Cantilever
In cantilever beams, the extra support is known as ____________
d) Indeterminate end
Explanation: In case of cantilever beam, some support other than existing ones may be provided to reduce the amount of bending moment developed. The additional support is known as prop.
Prop reduces ___________ in the beam.
Explanation: The extra support provided in case of cantilever beam excluding the existing ones is known as prop. It is provided in order to avoid excessive deflection caused due to unequal loading.
Which of the following is indeterminate structure?
a) Singly rereinforced beam
b) Propped cantilever beam
c) Over hanging beam
d) Simply supported beam
Explanation: The statically indeterminate structures are not capable of being analysed by using equation of statics. We need some more extra conditions for finding unknowns like €i and €y etc. A propped cantilever beam is an example of indeterminate structures.
____________ is used to produce due to temperature variation in indeterminate structures.
Explanation: Statically indeterminate structures need some extra conditions for the further simplification. Normally stresses are produced due to variation in indeterminate beams.
In cantilever beams, the maximum deflection occurs at ___________
a) Fixed end
b) Free end
c) Through out
d) Point of loading
Explanation: The maximum deflection in cantilever beam occurs at free end. To resist that excessive deflection, the beam has to be supported by an extra support known as prop.
As per IRC, maximum width of lane considered as ____________
a) 2.44 m
b) 2.35 m
c) 3.5 m
d) 3.4 m
Explanation: As per IRC, the maximum width be 2.44 m. For a single lane, the width considered is 3.8 m. The pavement having two or more lanes the weight of 3.5 metre per lane is considered sufficient.
______ is the area of land acquired and reserved for future development.
a) Right of pier
b) Carriage way
c) Right of way
Explanation: It is desirable to acquire more land because of the cost of adjoining land in variable increases after laying the road. The right of way is area of land acquired and reserved for future development.
Stability of high rise vehicles will be affected due to ____________
c) Super elevation
d) Formation Width
Explanation: The rise given to the centre portion of the proposed carriageway with reference to its peripheral edge is called camber. Road users use more in the central portion of road and get worn out. The stability of high rise vehicles will be affected due to heavy camber.
The longitudinal rise or fall off road surface along its length is _________
b) Super elevation
d) Carriage way
Explanation: The gradient is defined as the longitudinal rise or fall off road surface love its length is expressed as ratio 1 vertical: n horizontal or as a percentage.
Which of the following gradient is usually used in the construction of roads?
a) Exceptional gradient
b) Limiting gradient
c) Hydraulic gradient
d) Ruling gradient
Explanation: Ruling gradient may be used as isolated over in flat country roads carrying a large volume of slow moving traffic. Gradient up to the ruling gradient for different terrains. It is to be adopted in normal course of design.
According to IRC, the height of the object is taken to the height of ___________ mm.
a) 200 mm
b) 100 mm
c) 450 mm
d) 600 mm
Explanation: Sight distance is an important requirement for the safety of travel on highways the height of the object is taken to be at a depth of 100 mm above road.
What is the minimum shoulder width provided for village roads?
a) 1.25 m
b) 1.4 m
c) 0.5 m
d) 1 m
Explanation: The minimum shoulder width provided for village roads is 0.5m.
Class of road Minimum shoulder width(Hilly terrain)
NH & SH ways 1.25 m
MD roads 0.5
Village roads 0.5
In case of vertical curves, the ____________ are taken above the road.
b) Super elevation
c) Earth quantities
Explanation: The line of sight of a driver above the road is taken as 1.2m. The height of the object is taken to be height of 100 mm. Sight distance is an important resource requirement for the safety of travel. The designing layout plays a very vital role.
The time required for overtaking ___________ seconds.
a) 9 to 14
b) 8 to 10
c) 11 to 15
d) 14 to 19
Explanation: In the case of vertical curves, the sight distance is an important requirement for the safety of travel. It it is necessary that sight distance of adequate length should be available in different situations to permit driver enough time and distance to control their vehicles so that there are no unwarranted accidents.
_____ provide gradual introduction of super elevation.
a) Transition curves
b) Summit curves
c) Joint curves
d) Adjoining curves
Explanation: The transition curves are necessary for a vehicle to have smooth entry of straight section into circular curve. They provide aesthetic experience of the road. They provide a graduate introduction of super elevation.
Strength of Materials MCQs Deflection of Propped Cantilever
The upward deflection caused by the prop is _____________
Explanation: The deflection developed by proper reaction at free end “y” = Pl3/3EI. A cantilever beam which is supported by an extra support when length of beam increases beyond limit is termed as propped cantilever in order to reduce the excessive deflection.
Stiffness of the propped cantilever is _________
Explanation: When is a structural member of uniform section is subjected to moment at one end then the moment develops which is required so as to rotate the end to produce unit slope. This is known as of the member. For propped cantilever, the stiffness is 4EI /l.
The major losses of energy due to friction are calculated by using _________
a) Ingli’s formulae
b) Emperical notations
c) Chezy’s Equation
d) Lacey’s Theory
Explanation: The major loss of energy is caused by friction and it is calculated by using either Darcy – Weisbach equation or chezy’s formula. The chezy’s formula V = C(mi)1/2. Formula for Darcy’s Weisbach equation is = 4fLV2 / 2gd.
The ratio of A/P is ___________
a) Hydraulic radius
b) Arbitrary datum
c) T E L
d) H G L
Explanation: The ratio to the cross sectional area and wetted perimeter is called hydraulic radius. It is also known as hydraulic mean depth. It is denoted by m.
Determine the velocity of flow in a pipe if the discharge capacity is 270 litres per second and cross sectional area is 5 cm2.
a) 4.5 m/s
b) 5.4 m/s
c) 3.4 m/s
d) 2.5 m/s
Explanation: Discharge (Q) = 270 lit/sec = 270 × 10-3 = 0.27 m3/ s.
Velocity of flow in narrow pipe = Q / A
= 0.27/ 0.05 = 5.4 m/s.
Calculate the reaction at prop of cantilever, if the span of beam is 5m and load is 20 kN.
a) 4.25 kN
b) 5 kN
c) 6.25 kN
d) 8 kN
Explanation: For analysing the prop reaction for a cantilever beam at free end = P = 5W/16
P = 5 × 20 / 16
P = 6.25 kN.
The highest point on syphon is known as ____
Explanation: A siphon is a long bent pipe used to transfer water from one reservoir to the other reservoir which is located at different elevations. The highest point of the siphon is known as Summit.
The position between the summit and the lower reservoir is known as ___________
a) Inlet leg
b) Outlet leg
c) Pressure head
Explanation: The portion of the syphon which lies above the HGL has negative pressures and the portion between the summit and the lower reservoir is known as out let leg. At the summit the pressure is minimum.
Full form of TEL is _________
a) Total Emission Line
b) Thermal Electro Light
c) Total Energy Line
d) Total Electro Light
Explanation: TEL (Total Energy Line) is the line which is obtained by joining tops of all vertical ordinates showing the sum of pressure head and kinetic head from the centre of the pipe.
The sheet of water flowing through a notch is called Nappe.
Explanation: The sheet of water flowing through a notch or weir is called as Nappe or Vein. The bottom of the notch or the top of weir over which the water flows is known as the sill (or) crest and its height about the bottom of the tank or channel is known as sill height or crest height.
The width of broad gauge is ___________
c) 1 m
d) 0.61 m
Explanation: The width of broad gauge is 1.676m.
Types of Gauge Gauge Width
Broad gauge 1.676 m
Narrow gauge 0.762 m
Light gauge 0.61 m
Which of the following gauge is the Indian Standard Gauge?
a) Broad gauge
b) Narrow gauge
c) Light gauge
d) Metre gauge
Explanation: The Broad gauge is the Indian Standard gauge. It is widely accepted because of its complexity. The world standard gauge is 1.483 m. Broad gauge enables the rails to act as girders and transmit the wheel load to sleepers.
_____ is the weakest part in railway track.
a) Rail joint
Explanation: Rail joint is a joint made between two rails jointed together with two fish plates and for fish bolts, to form an expansion gap of 1.5 to 3 mm. Rain joint is the weakest part in railway track.
About 90% railway tracks laid with ___________ rails in the world.
a) DH rails
b) BH rails
c) FF rails
d) GH rails
Explanation: In flat footed rails, foot is made thinner and wider than head. These rails can be directly fixed to sleepers using slip spikes. This rail invented by Charles Vignoles and hence it is also known as Vignoles rails.
Brass is an example of ____________
Explanation: Toughness is a property of a material, which enables it to absorb energy without fracture. It exists due to impact loads. Hence this property is very desirable in every component subject to impact stock loadings.
Brass and Mild steel are examples of toughness.
Strength of Materials MCQs Analyse Fixed Beam
A beam which is inbuilt in at its support is called _________
a) Cantilever beam
b) Simply supported beam
c) Fixed beam
d) Continuous beam
Explanation: A beam which is built in at its support is known as a fixed beam. In a fixed beam, fixed end moments are developed at the ends. The slope at the end support is zero or (unaltered).
Fixed beam is also known as _______
a) Encaster beam
b) Constressed beam
c) In built beam
d) Constricted beam
Explanation: Fixed beam is also called Encaster beam or Constraint beam or Built in beam. In a fixed beam the fixed end moments develop at the end supports. In these beams, the supports should be kept at the same level.
In fixed beams, the slope at the supports be ___________
Explanation: The fixed beam is stronger, stiffer and more stable. The slope at the supports is zero.
Maximum bending moment at the centre is reduced because of fixing moments developed at supports.
_______ changes induce large stresses in a fixed beam.
Explanation: In fixed beam, sinking of any one support sets large stresses. The temperature changes induce the largest stress. The moving loads make the degree of fixity at support uncertain.
A beam 6 metres long is fixed at it ends. It carries a udl of 5 kN/m. Find the maximum bending moment in the beam.
a) 15 kNm
b) 20 kNm
c) 35 kNm
d) 40 kNm
Explanation: A beam carrying udl along its entire span, the maximum bending moment developed = wl2 / 12.
= 5×62 / 12.
Calculate the maximum deflection of a fixed beam carrying udl of 5 kN/m. The span of beam is 6 m. Take E = 200kN/m2 and I = 5×107 mm4.
a) 1.865 m
b) 2.235 m
c) 1.6875 m
d) 2.5 m
Explanation: The maximum deflection in fixed beam is wl4/384EI
= 5×64 × 109/ 384×200×5×107
= 1.6875 mm.
Calculate the load intensity of fixed beam if the maximum deflection shall not exceed 1/ 400 of the span. Take EI as 1010 kN mm2.
a) 40 kN
b) 35 kN
c) 45 kN
d) 60 kN
Explanation: When the maximum deflection equals to 1 / 400 of the span.
Wl4/ 384 EI = 1 /400.
W= 384 EI / 400 l3
W = 45 kN.
____ is known as a serpentine curve.
a) Circular curve
b) Transition curve
c) Reverse curve
d) Leminiscate curve
Explanation: Reverse curves are provided in difficult terrain. In these curves, the simple curves have a common tangent. They consist of two simple curves of same or different radii. These curves are also known as serpentine curves.
The maximum super elevation to be provided is ___
a) 2 in 15
b) 1 in 15
c) 1 in 10
d) 2 in 10
Explanation: According to IRC, the maximum super elevation of 1 in 15 is to be provided. Minimum super elevation is required for proper drainage. If the super elevation calculated is less than the camber no superelevation is to be provided.
______ curves are used to solve the problems of land acquisition.
a) Vertical curves
b) Horizontal curves
c) Circular curves
d) Transition curves
Explanation: A horizontal curve is the curve in plane to provide change in direction to the centre line of the alignment. It is used to preserve the certain existing amenities and to solve the problems of land acquisition.
The limiting gradient for mountainous terrain is ________
a) 6.00 %
b) 7.00 %
c) 8.00 %
d) 5.00 %
Explanation: The limiting gradient for mountainous terrain is 6.00%.
Type of terrain Ruling Gradient Limiting Gradient Exceptional Gradient
Plain 3.30% 5.00% 6.70%
Mountainous 5.00% 6.00% 7.00%
Which of the following do not have units?
a) Specific weight
b) Specific gravity
c) Specific volume
d) Mass density
Explanation: Specific gravity is defined as the ratio of the specific weight of solids to the specific weight of an equal volume of water at the temperature. It is denoted by S. As it is a ratio, it doesn’t possess units.
In engineering properties of soils, the “e” denotes?
b) Water content
d) Voids ratio
Explanation: Void ratio is defined as the ratio of the total volume of voids to volume of soil solids. It is expressed as a decimal.
_____ is a glacier deposit of sand, gravel or clay.
Explanation: The deposits made by glaciers are called drifts. The deposits made by the melting of glaciers are called till. Till is a stratified soil.
The bearing capacity of laminated rocks used in foundation is ___________
a) 1450 kN/m2
b) 1620 kN/m2
c) 1785 kN/m2
d) 2125 kN/m2
Explanation: The bearing capacity of laminated rocks used in foundation is 1620 kN/m2.
Type Of Rock Bearing capacity in kN/m2