RSMSSB-JE'21 CE: Daily Practices Quiz. 07-Sep-2021 |_00.1
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RSMSSB-JE’21 CE: Daily Practices Quiz. 07-Sep-2021

As RSMSSB JE exam date 2021 is announced which is going to be held on 12th September 2021. As RSMSSB JE exam date 2021 is nearby so boost your preparation by attempt this Civil Engineering miscellaneous quiz for RSMSSB JE recruitment 2021.

Quiz: Civil Engineering
Exam: RSMSSB-JEn
Topic: Miscellaneous

Each question carries 1 mark
Negative marking: 1/3 mark
Time: 8 Minutes

Q1. Friction piles are most effective in
(a) Soft clay
(b) Dense sand
(c) Organic soil
(d) Filled up soil

Q2. Addition of sugar in concrete result in………
(a) Increase in setting time by about 1 hr.
(b) Increase in setting time by about 4 hr.
(c) Decrease in setting time by about 1 hr.
(d) Decrease in setting time by about 4 hr.

Q3. The type of cement used in lining of deep tube wells is:
(a) Blast furnace slag cement
(b) Portland pozzolana cement
(c) Oil well cement
(d) High alumina cement

Q4. At a hydraulic jump, the depths at the two sides are 0.4 m and 1.4 m. The head loss in the jump is nearly?
(a) 1.0 m
(a) 0.9 m
(c) 0.7 m
(d) 0.45 m

Q5. A soil sample has bulk density of 21 kN/m^3 and water content 8%. Dry density of the sample is:
(a) 19.00 kN/m^3
(b) 18.44 kN/m^3
(c) 22.68 kN/m^3
(d) 19.44 kN/m^3

Q6. In a tension splice the number of rivets carrying calculated shear stress through a packing greater than 6mm thick, is to be increased by 2.5% for each _________ thickness of packing.
(a) 1 mm
(b) 1.5 mm
(c) 2 mm
(d) 2.5 mm

Solutions

S1. Ans.(b)
Sol. Friction piles are also called as ‘floating pile’. These piles are most effective in dense sand and used to transfer load through skin friction between the embedded surface of the pile and the surrounding soil.

S2. Ans.(b)
Sol. Sugar is used as retarder in concrete. It increases in setting time by about 4 hr.

S3. Ans.(b)
Sol. Portland – Pozzolana cement (PPC) is used in lining of deep tube wells. It is manufactured by grinding OPC and Pozzolana (containing fly ash 10 to 25% by mass). It is also used in mass concreting and places of high temperature.

S4. Ans.(d)
Sol. Given, conjugate depths y_1=0.4 m.
y_2=1.4 m.
E_L= ?
E_L=(y_2-y_1 )^3/(4y_1 y_2 )
=(1.4-0.4)^3/(4×1.4×0.4)
▭(E_L=0.446≈0.45m)

S5. Ans.(d)
Sol. Given,
γ_b=21 kN/m^3
w=8%=0.08
γ_d=?
γ_d=γ_b/(1+w)=21/(1+0.08)=19.44 kN/m^3

S6. Ans.(c)
Sol. In tension splice the number of rivets carrying shear stress through a packing greater than 6 mm thick is to be increased by 2.5% for each 2 mm thickness of packing.

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