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NHPC-JE’21 CE: Daily Practices Quiz. 23-Nov-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. A cement concrete road is 1000 m long, 8 m wide and 15 cm thick over the sub-base of 10 cm thick gravel. The box cutting in road crust is ………
(a) 500 m³
(b) 1000 m³
(c) 1500 m³
(d) 2000 m³

Q2. Friction piles are most effective in
(a) Soft clay
(b) Dense sand
(c) Organic soil
(d) Filled up soil

Q3. 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.

Q4. Isopleths are lines on a map through points having equal depth of
(a) Rainfall
(b) Infiltration
(c) Evapotranspiration
(d) Total runoff

Q5. A steel column in a multistoried building carries an axial load of 125 N. it is built up of 2 ISMC – 350 channels connected by lacing. The lacing carries a load of
(a) 125.125N
(b) 12.525N
(c) 3.126 N
(d) Zero

Q6. Which of the following Levelling is necessary for carrying Levelling across any obstacle requiring a long sight between two points so situated where no place is there for the setup of the level midway between two points?
(a) Differential Levelling
(b) Fly Levelling
(c) Precise Levelling
(d) Reciprocal Levelling

Solutions

S1. Ans.(d)
Sol. The box cutting in road crust = 1000×8×(0.15+0.10) = 2000 m³.

S2. 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.

S3. Ans.(b)
Sol. Sugar is used as retarder in concrete. It increases in setting time by about 4 hr.

S4. Ans.(c)
Sol. Isopleths are the lines on a map through points having equal depth of “evapotranspiration”. The mean annual potential evapotranspiration (PET) (in cm) over various parts of the country is shown in the form of isopleths.

S5. Ans.(c)
Sol. Axial load = 125 N
Load carrying by lacing member = 2.5 ×125/100
=3.125 N

S6. Ans.(d)
Sol. Reciprocal levelling → It is done to determined difference in elevations between two points which are situated quite a large distance apart and it is not possible to set up the instrument in between these points.
Ex. Opposite banks of river.

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