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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Tests  >  ISRO Draughtsman Civil Mock Test - 6 - Civil Engineering (CE) MCQ

ISRO Draughtsman Civil Mock Test - 6 - Civil Engineering (CE) MCQ


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30 Questions MCQ Test - ISRO Draughtsman Civil Mock Test - 6

ISRO Draughtsman Civil Mock Test - 6 for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The ISRO Draughtsman Civil Mock Test - 6 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The ISRO Draughtsman Civil Mock Test - 6 MCQs are made for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for ISRO Draughtsman Civil Mock Test - 6 below.
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ISRO Draughtsman Civil Mock Test - 6 - Question 1
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A crop requires 19 cm of water in 14 days, then the duty of the crop is

Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 1
Duty

ISRO Draughtsman Civil Mock Test - 6 - Question 2
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For constructing dams and foundation, the type of cement generally used is:

Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 2
For constructing dams and foundations, the type of cement generally used is port lands blast furnace cement.
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ISRO Draughtsman Civil Mock Test - 6 - Question 3
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To form a still water pocket in front of the canal head, the following is constructed:

Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 3

The functions of the divider wall are as follows

To form a still water pocket in front of the canal head so that the suspended silt can be settled down which then later be cleaned through the scouring sluices from time to time.

It controls the eddy current or crosses current in front of the canal head.

ISRO Draughtsman Civil Mock Test - 6 - Question 4
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Expansion joints are provided if the length of the concrete structure exceeds -
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 4
Expansion joints have to be provided can be determined after considering various factors, such as temperature, exposure to weather, the time and season of the laying of the concrete, etc. Normally structures exceeding 45 m in length are designed with one or more expansion joints.
ISRO Draughtsman Civil Mock Test - 6 - Question 5
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The Pitot tube is used to measure.
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 5
Pitot tube: It is a simple device used for measuring the velocity of flow. The basic principle used in this device is that if the speed of flow at a particular pit is reduced to zero, which is known as stagnation point, the pressure there is increased due to the conversion of the kinetic energy into pressure energy, and by measuring the increase in the the pressure energy at this point, the velocity of flow may be determined.
ISRO Draughtsman Civil Mock Test - 6 - Question 6
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Quicksand is a-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 6
Quick Sand condition If the seepage pressure becomes equal to the pressure due to the submerged weight of the soil, then evidently, the effective pressure is reduced to zero. In such a limiting case, the Cohesionless soil loses all its shear strength, and the soil particles will tend to move up in the direction of flow. This phenomenon of the lifting of soil particles is called the quick condition or boiling condition, or quick sand. The hydraulic gradient corresponding to this situation (Just starting) is called critical hydraulic gradient ((ic)) Where,

G= Specific gravity

e= void ratio

ISRO Draughtsman Civil Mock Test - 6 - Question 7
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Nitrates more than 45 mg/l in water lead to a disease called -
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 7
The pressure of too much nitrate in water may adversely affect the infant’s health, causing a disease technically called “methemoglobinemia.”
ISRO Draughtsman Civil Mock Test - 6 - Question 8
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Coefficient of active earth pressure for cohesion less soil is given by -
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 8
Coefficient of active earth pressure ((Ka))

(Ka=1−sin⁡θ/1+sin⁡θ)

(=tan2⁡(45−θ/2))

Where (θ)= angle of internal friction.

ISRO Draughtsman Civil Mock Test - 6 - Question 9
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For the stiffness criteria of a simply supported beam the ratio of its span to depth shall not exceed:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 9

As per is 456:2000, clause 23.2.1, L/d foe spans upto 10 m.

ISRO Draughtsman Civil Mock Test - 6 - Question 10
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In ordinary Portland cement, the first one to react with water is :
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 10
It is responsible for the initial set, high heat of hydration, and a greater tendency to volume change
ISRO Draughtsman Civil Mock Test - 6 - Question 11
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Average flow parallel to the plane of stratification is governed by:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 11

Average permeability parallel to the plane of stratification depends mainly on the permeability of the most permeable layer and its value is close to the permeability of that layer.

ISRO Draughtsman Civil Mock Test - 6 - Question 12
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A reinforced concrete beam, supported on columns at ends, has a clear span of 5m and 0.5m, effective depth. It carries a total uniformly distribution lad 100 kN/m. The design shear force for the beam is:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 12
For a UDL applied on a simply supported beam

Shear force = (ωL/2)

here L = 5m

S.F. = (100×5/2 =250kN)

The effective depth of the beam is 0.5m, hence critical depth for shear occurs at a distance of 0.5 m from the face of the column

Therefore, design shear force

= 250 – 100 × 0.5 = 200 kN

Hence the option B is correct.

ISRO Draughtsman Civil Mock Test - 6 - Question 13
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Which of the following is not primary air or pollutant?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 13
The primary air pollutants are

(i) Oxides of Sulphur

(ii) Oxides of Carbon

(iii) Oxides of Nitrogen

(iv) Suspended particulate matter

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 6 - Question 14
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Warping stresses in a C.C. Pavement are due to:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 14
Warping stress is due to daily variation in temperature, whereas frictional stress is due to seasonal variation of temperature.

Hence the correct answer is option A.

ISRO Draughtsman Civil Mock Test - 6 - Question 15
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Which one of these is not a method to obtain deflection of beams?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 15
Mohr’s circle is used to obtain principal stresses and strains.

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 6 - Question 16
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For ranging a line, the number of ranging rods required is -
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 16
Two rods at both end stations and one rod in the middle of the two stations for direct running.

Hence the correct answer is option B.

ISRO Draughtsman Civil Mock Test - 6 - Question 17
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In plastic analysis, which of the following pair are/is correctly matched?
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 17
Solid circular rod has a shape factor of 1.7

The hollow circular rod has a shape factor of 1.27

Rectangle and square have a shape factor of 1.5

Hence the correct answer is option (c).

ISRO Draughtsman Civil Mock Test - 6 - Question 18
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The ideal form of the curve for the summit curve is
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 18
The ideal form of the curve for the peak curve is a parabola.

Hence the correct answer is option B.

ISRO Draughtsman Civil Mock Test - 6 - Question 19
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The maximum numerical value of Poisson’s ratio is
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 19
The Poisson's ratio of a stable, isotropic, linear elastic material must be between −1.0 and +0.5 because of the requirement for Young's modulus, the shear modulus, and bulk modulus to have positive values. Most materials have Poisson's ratio values ranging between 0.0 and 0.5.

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 6 - Question 20
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The initial setting time of fresh concrete should be
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 20

Initial setting time shall not be less than 30 minutes and final setting time should not be more than 10 hours.

ISRO Draughtsman Civil Mock Test - 6 - Question 21
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The thermal expansion coefficient of steel α is

Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 21
The thermal expansion coefficient of steel αis 12×10-6/0C and close to α concentre.

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 6 - Question 22
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The shear stress in turbulent flow is:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 22

ISRO Draughtsman Civil Mock Test - 6 - Question 23
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Hydrostatic law of pressure is given as
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 23

According to the hydrostatic law, the vertical rate of increase of pressure must equal the local specific weight of the fluid at any point inside a static fluid. As per the law, for maintaining an equilibrium condition in the z-direction, the sum of all the vertical forces acting at the point O must disappear.

ISRO Draughtsman Civil Mock Test - 6 - Question 24
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Spalling stresses are produced in post-tensioned pre-stressed concrete members at-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 24

During prestressing, spalling stresses are generated in the region behind the loaded faces of anchor blocks. 

Spalling stress (bursting) occurs for the post-tensioned beam at the anchorage zone due to heavy bearing stress

At the zone between two anchorages, there is a volume of concrete surrounded by compressive stress. Forces are induced in the opposite direction to the applied forces and it forces the concrete out of the anchor block. On the other hand, the spalling stresses are set up owing to the strain compatibility relating to the effect of Poisson’s ratio. To prevent this, we use spalling reinforcement at locations of maximum bending moment

ISRO Draughtsman Civil Mock Test - 6 - Question 25
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The length of the straight portion of a bar beyond the end of the hook should be at least-
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 25
As per IS 456 : 2000, clause 26.2.2.4 (b)

Hence the correct answer is option C.

ISRO Draughtsman Civil Mock Test - 6 - Question 26
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The effective span of a simply supported slab is-
ISRO Draughtsman Civil Mock Test - 6 - Question 27
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An irrigation outlet is said to be proportional when its:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 27
An outlet is said to be proportional if its flexibility is 1,

Hence, the correct option is (B)

ISRO Draughtsman Civil Mock Test - 6 - Question 28
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Heart rot is a defect in timber which is formed:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 28
Heart rot is generated in the trees when fungi attack the heartwood through its newly formed branch. This type of fungi makes the tree hollow by consuming heartwood. This defect is known as heart rot.

Hence, the correct option is (D)

ISRO Draughtsman Civil Mock Test - 6 - Question 29
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The curve of growth of population is:
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 29
The human population is following a roughly logistic growth curve. During the 70s up to the 90s, growth was near exponential.

Hence, the correct option is (B)

ISRO Draughtsman Civil Mock Test - 6 - Question 30
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What is the range of fineness modulus of sand which is least suitable for making a good concrete
Detailed Solution for ISRO Draughtsman Civil Mock Test - 6 - Question 30

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