NHPC-JE'21 CE: Daily Practices Quiz. 03-Nov-2021 |_00.1
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NHPC-JE’21 CE: Daily Practices Quiz. 03-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. Granite and rhyolite are examples of which of the following?
(a) Sedimentary rocks
(b) Stratified rocks
(c) Igneous rocks
(d) Metamorphic rocks

Q2. A 30m, metric chain is found to be 0.1 m too short throughout the measurement. If the distance measured is recorded as 300m, then the actual distance measured will be:
(a) 300.1 m
(b) 301.0 m
(c) 299.0 m
(d) 310.0 m

Q3. Which of the following process is adopted to remove odour and taste due to voltatile gases like hydrogen sulphide and algae in a water treatment plant?
(a) Filtration
(b) Sedimentation
(c) Disinfection
(d) Aeration

Q4. If L is the length of vehicles in meters C is the clear distance between two consecutive vehicles (Stopping sight distance), V is the speed of vehicles in km per hour, the maximum number N of vehicles/hour is ________.
(a) N = 1000C/(L + V)
(b) N = (1000 L)/(C + V)
(c) N = (L+C)/(1000 V)
(d) N = (1000 V)/(L + C)

Q5.A soil has a liquid of 40% and plasticity index of 20%. The plastic limit of the soil will be
(a) 20%
(b) 30%
(c) 40%
(d) 60%

Q6. Wheat requires about 7.5 cm of water after every 28 days and the base period for wheat is 140 days. What will be the value of Δ for wheat?
(a) 37.5 cm
(b) 30.75 cm
(c) 750 cm
(d) 17.5 cm

Solutions

S1. Ans.(c)
Sol. Igneous rock → These rocks are formed by cooling or solidification of magma. These are strong and durable.
Ex. Granite, dolerite, basalt, andesite, rhyolite etc.

S2. Ans.(c)
Sol.
l = 30
l’ = 30 – 0.10 = 29.9m.
L’ = 300 m.
L =?
L × l = L’ × l’
L × 30 = 300 × 29.9
▭(L=299m.)

S3. Ans.(d)
Sol. Aeration is the process in which water is brought in intimate contact with air which removes undesirable gases (like CO_2 H_2 S), taste, odour, volatile liquid and dissolved mineral (like iron and magnesia) from water.

S4. Ans.(d)
Sol. Maximum theoretical capacity from space head way is given by–
N=(1000 V)/S
▭(N=(1000 V)/(L+C)) (∵ S = L + C)
Where, N = Theoretical maximum capacity
V = Speed of vehicle in kmph
L = Length of vehicle in m.
C = Clear distance between two consecutive vehicles.

S5. Ans.(a)
Sol. Given
w_L=40%
I_P = 20%
w_P= ?
I_P=w_L-w_P
20%=40%-W_P
▭(W_P=20%)

S6. Ans.(a)
Sol. Delta (∆) = 7.5 cm.
Bale period (B)= 28 days
D=8.64 B/∆
= 8.64×28/7.5×100
= 3225.6 ha/cumes
Now B= 140 days
∆= ?
D= 3225.6 ha/cumecs
∆=8.64 B/D
= 8.64×140/3225.6
= 0.375 m.
= 37.5 cm

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