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DFCCIL’21 CE: Daily Practice Quiz. 23-September-2021

DFCCIL (Dedicated Freight Corridor Corporation of India Limited) Exam Date 2021 on September and October 2021 so boost your preparation by attempt this Civil Engineering MISCELLANEOUS quiz for DFCCIL recruitment 2021.

Quiz: Civil Engineering
Exam: DFCCIL-JE
Topic: Building Construction Technology

Each question carries 1 mark
Negative marking: 1/4 mark
Time: 8 Minutes

Q1. The detachment of the paint film from the surface is known as____________.
(a) Chalking
(b) Cracking
(c) Flaking
(d) Wrinkling

Q2. The ultimate tensile strength of the structural mild steel is:
(a) 160 N/mm²
(b) 260 N/mm²
(c) 420 N/mm²
(d) 520 N/mm²

Q3. If R and T are rise and tread of a stair spanning horizontally and steps are supported by wall on one side and by stringer beam on the other side, the steps are designed as beam of width:
(a) ((R+T))/2
(b) R+T
(c) T-R
(d) √(R^2+T^2 )

Q4. The ingredient of paint which gives it, the binding property and form opaque coating is:-
(a) Base
(b) Vehicle
(c) Solvent
(d) Filler

Q5. Consider the following statements:
1. Conjugate bean can be used to determine slopes and defection shops and defection in a non-prismatic beam.
2. Conjugate beam may be statically indeterminate
3. Conjugate beam method gives absolute slope and deflection.
The correct answer is
(a) 1 only 3
(b) 1 and 2
(c) 2 and 3
(d) 1, 2 and 3

Q6. Consider the following statements:
Among the more common varieties of timber, Nancy, Sal, Mango and Deodar,
1. Sal is the strongest
2. Mango is the least durable
3. Deodar is the lightest
Which of these statements are correct?
(a) 1, 2 and 3
(b) 1 and 2
(c) 1 and 3
(d) 2 and 3

SOLUTION

S1. Ans.(c)
Sol. There are same defect in paint surface
(a) Flaking → It is detachment of paint film from surface.
(b) Chalking → Paintfill becomes powder due to insufficient oil.
(c) Blistering → Formation of bubble on the surface of paints.
(d) Cracking → Formation of crack on painted surface.

S2. Ans.(c)
Sol. The ultimate tensile strength of the structural mild steel is 420 N/mm².

S3. Ans.(d)
Sol.DFCCIL'21 CE: Daily Practice Quiz. 23-September-2021 |_30.1

S4. Ans.(b)
Sol. vehicle → it provides binding property and opaque coating to paints. It helps in spreading the paints.
Ex. Linseed oil, poppy oil, Nut oil etc.
Base material → it is the oxide of metals. Base material is main component in paints.
Ex. White lead, red lead, iron oxide, Aluminium powder etc.
Thinner/solvent → It reduces the consistency of paints.
Ex. Turpentine oil etc.

S5. Ans.(b)
Sol. Conjugate beam is defined as the imaginary beam with the same dimensions (length) as that of the original beam but load at any point on the conjugate beam is equal to the bending moment at that point divided by EI.

S6. Ans.(a)
Sol. Chir and Deodar are softwoods and Sal considered to be a heard-wood.

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