NHPC-JE'21 CE: Daily Practices Quiz. 19-Oct-2021 |_00.1
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NHPC-JE’21 CE: Daily Practices Quiz. 19-Oct-2021

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

Quiz: Civil Engineering
Exam: NHPC-JE
Topic: Miscellaneous

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

Q1. The hardwood is produced by which of the following trees.
(a) Chir
(b) Sandle
(c) Pine
(d) Shishum

Q2. The capillary rise at 20°C in clean glass tube of 1 mm diameter, containing water is:
(a) 15 mm
(b) 50 mm
(c) 20 mm
(d) 30 mm

Q3. Consider the bending equation given below
σ/Y=M/I=E/R
The term R is known as __________.
(a) Mass moment of inertia
(b) Area moment of inertia
(c) Radis of curvature
(d) shear stress

Q4. If D_60,D_30 and D_10 of sizes of a soil grading are 4 mm, 2 mm and 0.5 mm, what will be the coefficient of uniformity of this soil?
(a) 0.5
(b) 1
(c) 2
(d) 8

Q5. The quantities of white – washing is computed in-
(a) cu.m
(b) run.m.
(c) sq.m.
(d) kg

Q6. The maximum safe permissible limit of sulphates in domestic water supply is
(a) 200 mg/l
(b) 600 mg/l
(c) 100 mg/l
(d) 500 mg/l

Solutions

S1. Ans.(d)
Sol. Hard wood → These woods are dark in colour and heavier in weight. ex. Sal, teak, shishum and other deciduous tree.
Soft wood → These woods are lighter in colour and weight. Ex willow, sandle, chir, deodar, pine and other conifers trees.

S2. Ans. (d)
Sol. Diameter = 1 mm
Surface tension of water at 20° C = 0.075 N/m
For water θ = 0
Capillary rise (h) = (4 σ cos⁡θ)/(γ_w d )
= (4 × 0 .075 ×cos 0 )/(1000 ×10 ×1 × 10^(-3) )
= 0.03 m
▭(h = 30 mm)

S3. Ans.(c)
Sol. Bending moment equation
M/I=σ/y=E/R
Here,
M = bending moment
I = moment of inertia
σ = bending stress
y = distance from neutral axis
E = modulus of elasticity
R = Radius of curvature

S4. Ans.(d)
Sol.
D_60=4mm
D_30=2mm
D_10=0.5mm
Coefficient of uniformity (C_u )=D_60/D_10
=4/0.5
=8

S5. Ans.(c)
Sol.

S.No. Particular of item Units of measurement
1. Earthwork
2. Shutters of doors and windows
3. Concreting works
4. White, washing, pointing, DPC, painting, varnishing.
5. Cornice, plain pipe, rain water pipe. Running meter
6. Rivets, bolts, nuts, iron grills. Quintal

S6. Ans.(a)
Sol. The maximum safe-limits in domestic water supply are:
Chloride ≤ 250 mg/l
Nitrates ≤ 45 mg/l
Sulphates ≤ 200 mg/l
Fluorides ≤ 1.5 mg/l

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