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UPSSSC-JE’21 CE: Daily Practice Quiz. 06-October-2021

Know your strengths and practice your concepts with this quiz on UPSSSC-JE Recruitment 2021. This quiz for UPSSSC-JE Recruitment 2021 is designed specially according to UPSSSC-JE Syllabus 2021.

Quiz: Civil Engineering
Exam: UPSSSC-JE
Topic: MISCELLANEOUS

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

Q1. In tri-axial compression test, the deviator stress is given by
(a) σ_1+σ¬¬_3
(b) σ_1-σ_3
(c) 1/2 (σ_1+σ_3)
(d) 1/2 (σ_1-σ_3)

Q2. Gantt charts indicate
(a) comparison of actual progress with the scheduled progress
(b) balance of work to be done
(c) progressive cost of project
(d) inventory costs

Q3. Free float is mainly used to
(a) identify the activities which can be delayed without affecting the total float of preceding activity
(b) identify the activities, which can be delayed without affecting the total float of succeeding activity
(c) identify the activities which can be delayed without affecting the total float of preceding activity
(d) establish Priorities

Q4. E, G, K and ν represent the elastic modulus, shear modulus, bulk modulus and Poisson’s ratio respectively of a linearly elastic, isotropic and homogeneous material. To express the stress-strain relations completely for this material, at least
(a) E, G and ν must be known
(b) E, K and ν must be known
(c) Any two of the four must be known
(d) All the four must be known
Q5. The ability of a material to absorb energy till the breaking or rupture takes place is known as
(a) Hardness
(b) Toughness
(c) Brittleness
(d) Softness

Q6. The maximum deflection of a simply supported beam of effective span L and subjected to a central concentrated load W is given by
(a) WL³/8 EI
(b) WL³/24 EI
(c) WL³/48 EI
(d) 5 WL³/384 EI

SOLUTION

S1. Ans.(b)
Sol. in tri-axial compression test →
Minor principal stress = confining pressure
σ_C=σ_3
Major Principal stress σ_1=σ_2+σ_d
σ_d is deviator stress
∵ ▭(σ_d=σ_1-σ_3 )

S2. Ans.(a)
Sol. A Gantt chart is a horizontal bar chart which indicate comparison of actual progress with the scheduled progress.

S3. Ans.(b)
Sol. The free float for activity i – j is the difference between its earliest start time and the earliest finish time for its successor activity. It is mainly used to identify the activities, which can be displayed without affecting the total float of succeeding activity.

S4. Ans.(c)
Sol. Any two of the four must be known to express the stress-strain relations completely for the material.
Relation between E, G & K →
▭(E=9GK/(G+3K))

S5. Ans.(b)
Sol. Toughness is the ability of material to absorb energy till breaking or rupture Point. It is also defined as total strain energy up to fracture.

S6. Ans.(c)
Sol.

UPSSSC-JE'21 CE: Daily Practice Quiz. 06-October-2021 |_30.1

The maximum deflection of simply supported beam of effective span L and subjected to a central concentrated and subjected to a central concentrated load (W) is given by –

Slope at (C) ▭(θ_C=(WL^2)/16EI)
Deflection at (C) ▭(δ_C=(WL^3)/48EI)

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