Engineering Questions with Answers - Multiple Choice Questions
MCQs on Deflection of Propped Cantilever
1 - Question
The upward deflection caused by the prop is _____________
a) Pl3/2EI
b) Pl2/3EI
c) Pl3/3EI
d) Pl4/3EI
View Answer
Answer: c
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.
2 - Question
Stiffness of the propped cantilever is _________
a) 4EI/l
b) 6EI/l
c) 8EI/I
d) 5EI/l
View Answer
Answer: a
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.
3 - Question
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
View Answer
Answer: c
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.
4 - Question
The ratio of A/P is ___________
a) Hydraulic radius
b) Arbitrary datum
c) T E L
d) H G L
View Answer
Answer: a
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.
5 - Question
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
View Answer
Answer: b
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.
6 - Question
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
View Answer
Answer: c
Explanation: For analysing the prop reaction for a cantilever beam at free end = P = 5W/16
P = 5 × 20 / 16
P = 6.25 kN.
7 - Question
The highest point on syphon is known as ____
a) Summit
b) Crown
c) Limb
d) Tread
View Answer
Answer: a
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.
8 - Question
The position between the summit and the lower reservoir is known as ___________
a) Inlet leg
b) Outlet leg
c) Pressure head
d) Datum
View Answer
Answer: b
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.
9 - Question
Full form of TEL is _________
a) Total Emission Line
b) Thermal Electro Light
c) Total Energy Line
d) Total Electro Light
View Answer
Answer: c
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.
10 - Question
The sheet of water flowing through a notch is called Nappe.
a) True
b) False
View Answer
Answer: a
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.
11 - Question
The width of broad gauge is ___________
a) 1.445m
b) 1.676m
c) 1 m
d) 0.61 m
View Answer
Answer: b
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 |
12 - Question
Which of the following gauge is the Indian Standard Gauge?
a) Broad gauge
b) Narrow gauge
c) Light gauge
d) Metre gauge
View Answer
Answer: a
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.
13 - Question
_____ is the weakest part in railway track.
a) Rail joint
b) Sleepers
c) Ballast
d) Spikes
View Answer
Answer: a
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.
14 - Question
About 90% railway tracks laid with ___________ rails in the world.
a) DH rails
b) BH rails
c) FF rails
d) GH rails
View Answer
Answer: c
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.
15 - Question
Brass is an example of ____________
a) Creep
b) Fatigue
c) Toughness
d) Hardness
View Answer
Answer: c
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.