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NHPC-JE’21 CE: Daily Practices Quiz. 20-Sep-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. ………. Building belonging to Group ‘D’ according to the National Building code.
(a) Assembly
(b) Educational
(c) Institutional
(d) Residential

Q2. The major constituent in siliceous rock is –
(a) Lime
(b) Clay
(c) Silica
(d) Slates

Q3. Calculate the combined correction for curvature and refraction (in m) for a distance of 2 km.
(a) 0.045
(b) 0.135
(c) 0.269
(d) 3.14

Q4. The ratio of daily BOD load applied to the aerator system in gram to total microbial mass in the system in gram is termed as…………
(a) volumetric BOD loading
(b) F/M ratio
(c) aeration tank loadings
(d) sludge age

Q5. According to IS code, allowable settlement of raft foundation on sand is
(a) 25 mm to 40 mm
(b) 40 mm to 65 mm
(c) 75 mm to 100 mm
(d) 100 mm to 120 mm

Q6. Shear span is defined as the zone where:
(a) Bending moment is zero
(b) Shear force is zero
(c) Shear force is constant
(d) Bending moment is constant

Solutions

S1. Ans.(a)
Sol. According to NBCC→
Group – A → Residential buildings
Group – B → Educational buildings
Group – C → Institutional buildings
Group – D → Assembly buildings

S2. Ans.(c)
Sol. Siliceous rocks → In these rocks, silica is predominates. They are hard and durable.
Ex. Granite, sandstone. Quartzite.

Argillaceous rock → In these rocks, the major constituent is clay. These are brittle in nature and can’t withstand shock.
Ex. Laterite, slates, kaoline.

S3. Ans(c)
Sol. d = 2 km
“Combine correction “(C)=-0.0673d^2
=0.0673×(2)^2 (Negative)
C=0.2692 m. (Negative)

S4. Ans.(b)
Sol. Food to micro-organism ratio (F/M ratio)= (Daily BOD load applied(gm))/(Total microbial mass (gm) )

S5. Ans.(b)
Sol. Allowable settlement of raft foundation –
Raft foundation on clay – 65 mm to 10mm
Raft foundation on sand – 40 mm to 65 mm.

S6. Ans.(c)
Sol. Shear span is the distance from the point of application of concentrated force to its respective reaction force. throughout shear span the shear force is constant.
“Shear span is defined as the zone where shear force is constant.”

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