Official Paper

ISRO Draughtsman Civil 24 March 2019 Official Paper (Previous Year Paper)

60 questions · 90 minutes · with answers · free

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Brick laid with length parallel to face of wall is known as

((a))
Header
((b))
Stretcher
((c))
Closer
((d))
Bond

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Answer: ((a))

Header

The plastering done in X-ray rooms

((a))
Granite silicon plaster
((b))
Gypsum plaster
((c))
Barium plaster
((d))
Acoustic plaster

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Answer: ((a))

Granite silicon plaster

The pitch of a stair must not exceed

((a))
18 degree
((b))
25 degree
((c))
20 degree
((d))
45 degree

Show Answer

Answer: ((a))

18 degree

For 20 mm diameter rivet, the diameter of rivet hole is

((a))
22 mm
((b))
20.5 mm
((c))
21 mm
((d))
21.5 mm

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Answer: ((a))

22 mm

_______ water is bacteriologically & chemically pure

((a))
Potable water
((b))
Wholesome water
((c))
Distilled water
((d))
Safe water

Show Answer

Answer: ((a))

Potable water

The temporary structure erected to increase the size of opening in an existing wall

((a))
Safety shore
((b))
Inclined shore
((c))
Horizontal shore
((d))
Dead shore

Show Answer

Answer: ((a))

Safety shore

Lead is used as _____ in paint

((a))
Base
((b))
Carrier
((c))
Drier
((d))
Pigment

Show Answer

Answer: ((a))

Base

"Sand-box" method is used for removing centering in arches for spans

((a))
> 5 m
((b))
> 6 m
((c))
> 7 m
((d))
> 4 m

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Answer: ((a))

> 5 m

_____ prevents the purlins from sliding

((a))
Cleat
((b))
Batten
((c))
Rafter
((d))
Eave board

Show Answer

Answer: ((a))

Cleat

M15 mix concrete refers to mix proportion of (cement : fine aggregate : coarse aggregate)

((a))
1 ∶ 1 ∶ 2
((b))
1 ∶ 1.5 ∶ 3
((c))
1 ∶ 2 ∶ 4
((d))
1 ∶ 3 ∶ 6

Show Answer

Answer: ((a))

1 ∶ 1 ∶ 2

In _____ system drain pipe serves as vent pipe

((a))
One pipe
((b))
Single stack
((c))
Two pipe
((d))
Double stack

Show Answer

Answer: ((a))

One pipe

Temporary hardness in water is due to presence of

((a))
Carbonates of calcium
((b))
Sulphates of calcium
((c))
Chlorides of calcium
((d))
Nitrates of calcium

Show Answer

Answer: ((a))

Carbonates of calcium

The standard size of drawing board of designation D₁ is (in mm)

((a))
1000 × 700 × 25
((b))
100 × 75 × 25
((c))
1500 × 750 × 25
((d))
1500 × 700 × 25

Show Answer

Answer: ((a))

1000 × 700 × 25

Formation of bubbles on painted surfaces is known as

((a))
Bloom
((b))
Blistering
((c))
Flaking
((d))
Fading

Show Answer

Answer: ((a))

Bloom

The roof formed by four sloping surfaces in four directions

((a))
Lean to roof
((b))
Hip roof
((c))
Gable roof
((d))
Gambrel roof

Show Answer

Answer: ((a))

Lean to roof

CADD means

((a))
Computer Aided Drawings & Data
((b))
Computer Aided Design & Drafting
((c))
Civil Aided Design & Drafting
((d))
Civil Assisted Developed Drawing

Show Answer

Answer: ((a))

Computer Aided Drawings & Data

Movement of air through ducts into a room is known as

((a))
Exhaust system
((b))
Duct system
((c))
Ventilated system
((d))
Plenum system

Show Answer

Answer: ((a))

Exhaust system

When a steel beam is connected to a steel column by cleats angles on either side of the web of the beam, the connection is known as

((a))
Framed connection
((b))
Seated connection
((c))
Rigid connection
((d))
Flexible connection

Show Answer

Answer: ((a))

Framed connection

_____ refuse include dry animal & vegetable refuse.

((a))
Mineral
((b))
Non-combustible
((c))
Inorganic
((d))
Organic

Show Answer

Answer: ((a))

Mineral

The Length : Width in case of an arrow head is

((a))
1 : 1
((b))
2 : 1
((c))
3 : 1
((d))
4 : 1

Show Answer

Answer: ((a))

1 : 1

The bearing capacity of soil can be improved by

((a))
Increasing the length of foundation
((b))
Increasing the width of foundation
((c))
Increasing both length & width of foundation
((d))
Increasing depth of foundation

Show Answer

Answer: ((a))

Increasing the length of foundation

The concentration by weight of 'Aldrin' in water solution for anti-termite treating of soil.

((a))
0.1%
((b))
0.5%
((c))
1.0%
((d))
1.5%

Show Answer

Answer: ((a))

0.1%

The minimum horizontal distance between electric power line & building is

((a))
0.6 m
((b))
1.0 m
((c))
1.2 m
((d))
1.5 m

Show Answer

Answer: ((a))

0.6 m

The key strokes 'Ctrl+C' defines

((a))
Copy clip
((b))
Grid on / off
((c))
Polar tracking on / off
((d))
Redo

Show Answer

Answer: ((a))

Copy clip

Septic tank works on the principle of ______.

((a))
Aerobic digestion
((b))
Anaerobic digestion
((c))
Continuous flow
((d))
Aeration system

Show Answer

Answer: ((a))

Aerobic digestion

The designation of sheet of size 594 mm × 841 mm is

((a))
A0
((b))
A1
((c))
A2
((d))
A3

Show Answer

Answer: ((a))

The line connecting a view to note is called

((a))
dimension line
((b))
projection line
((c))
leader
((d))
arrowheads

Show Answer

Answer: ((a))

dimension line

One yard = ______ inch.

((a))
36
((b))
38
((c))
40
((d))
42

Show Answer

Answer: ((a))

What does WCS stand for?

((a))
Western CAD system
((b))
Worldwide Coordinate Sectors
((c))
World Coordinate System
((d))
None of the above

Show Answer

Answer: ((a))

Western CAD system

Offset command can be used for drawing

((a))
Infinite lines
((b))
Parallel lines
((c))
Intersecting lines
((d))
Perpendicular lines

Show Answer

Answer: ((a))

Infinite lines

The term used by most CAD systems for "rounding corners" is

((a))
Chamfer
((b))
Curve
((c))
Fillet
((d))
Smooth

Show Answer

Answer: ((a))

Chamfer

The internal angle of regular pentagon is __________ degree.

((a))
72
((b))
108
((c))
120
((d))
150

Show Answer

Answer: ((a))

Angstrom (Å) = ______.

((a))
10^-6 m
((b))
10^-8 m
((c))
10^-10 m
((d))
10^-12 m

Show Answer

Answer: ((a))

10^-6 m

Which of the following represents a reducing scale?

((a))
1 : 1
((b))
1 : 2
((c))
2 : 1
((d))
10 : 1

Show Answer

Answer: ((a))

1 : 1

Which one of the following is not a valid option of units command?

((a))
Architectural
((b))
Decimal
((c))
Meter
((d))
Metric

Show Answer

Answer: ((a))

Architectural

Four Micron is

((a))
0.04 mm
((b))
0.004 mm
((c))
0.0004 mm
((d))
0.4 mm

Show Answer

Answer: ((a))

0.04 mm

Hidden lines are drawn as

((a))
dashed narrow lines
((b))
dashed wide lines
((c))
long-dashed dotted wide line
((d))
long-dashed double dotted wide line

Show Answer

Answer: ((a))

dashed narrow lines

Which one of the following is not a valid option for drawing a circle?

((a))
Points
((b))
Tan Tan Center
((c))
Tan Tan Radius
((d))
Tan Tan Tan

Show Answer

Answer: ((a))

Points

Error of measurement =

((a))
Precision - True value
((b))
Measured value - Precision
((c))
True value - Measured value
((d))
None of the above

Show Answer

Answer: ((a))

Precision - True value

Best Conductor of heat and electricity is

((a))
Chromium
((b))
Nickle
((c))
Copper
((d))
Aluminium

Show Answer

Answer: ((a))

Chromium

If (3/4)^th of a number is 7 more than (1/6)^th of the number, then (4/3)^rd of the number is

((a))
16
((b))
12
((c))
20
((d))
15

Show Answer

Answer: ((a))

$\dfrac{3^0 +3^{-1}}{3^{-1}-3^0}$ is equal to

((a))
1
((b))
-2
((c))
-1
((d))
2

Show Answer

Answer: ((a))

If $a=(\sqrt{2}+1), b = (\sqrt{2}-1)$ , then the value of $\dfrac{1}{(a+1)}+ \dfrac{1}{(b+1)}$ is

((a))
9
((b))
3
((c))
2
((d))
1

Show Answer

Answer: ((a))

If m, n, o are in geometric progression, then which is true among the following?

((a))
$n = \dfrac{m+o}{2}$
((b))
m² = no
((c))
$n=\sqrt{mo}$
((d))
$\dfrac{m}{o}=\dfrac{o}{n}$

Show Answer

Answer: ((a))

$n = \dfrac{m+o}{2}$

If tan A = cot B; then A + B = ?

((a))
60°
((b))
90°
((c))
45°
((d))
55°

Show Answer

Answer: ((a))

60°

How many diagonals are there in an octagon?

((a))
8
((b))
16
((c))
18
((d))
20

Show Answer

Answer: ((a))

If the radius of a sphere be doubled, the area of its surface will become

((a))
Double
((b))
Three Times
((c))
Four Times
((d))
None

Show Answer

Answer: ((a))

Double

Eighteen years ago, the ratio of A's age to B's age was 8 ∶ 13. Their present ratio is 5 ∶ 7; What is the present age of A.

((a))
60
((b))
70
((c))
50
((d))
40

Show Answer

Answer: ((a))

If (3^x+3) + 7 = 250 ; then x is equal to

((a))
5
((b))
2
((c))
3
((d))
1

Show Answer

Answer: ((a))

What is the distance between the coordinates (0, 3) and (4, 0)?

((a))
5
((b))
7
((c))
1
((d))
12

Show Answer

Answer: ((a))

A feather, a plastic ball and a steel ball are dropped simultaneously from a common point in vacuum. Which one will touch the ground first?

((a))
Steel Ball
((b))
Feather
((c))
Plastic Ball
((d))
All will reach at the same time

Show Answer

Answer: ((a))

Steel Ball

A man takes 30 minutes to cover a distance of 6.4 kilometers due east on a bicycle. His velocity in kilometers / hour will be

((a))
3.2
((b))
12.8
((c))
25.6
((d))
6.4

Show Answer

Answer: ((a))

3.2

A ball is dropped from a window of 19.62 meters high. How long will it take to reach the ground?

((a))
1 sec
((b))
4 sec
((c))
2 sec
((d))
0.5 sec

Show Answer

Answer: ((a))

1 sec

In comparison to pure water, Boiling point of impure water

((a))
is same
((b))
increases
((c))
decreases
((d))
first decreases then Increases

Show Answer

Answer: ((a))

is same

Ratio of Kinetic energy to potential energy is

((a))
v²/2gh
((b))
gh/2v²
((c))
mgh
((d))
mv²/2

Show Answer

Answer: ((a))

v²/2gh

As temperature rises, particles of matter

((a))
Move faster
((b))
Move slower
((c))
No change w.r.t. temperature
((d))
None of the above

Show Answer

Answer: ((a))

Move faster

Which of the following instrument is used to measure magnetic field?

((a))
Thermometer
((b))
Flux meter
((c))
Pyrometer
((d))
Hygrometer

Show Answer

Answer: ((a))

Thermometer

Heat produced due to flow of current through a conductor is given by formula

((a))
H = I²Rt
((b))
$H=\dfrac{V^2t}{R}$
((c))
H = VIt
((d))
All of the above

Show Answer

Answer: ((a))

H = I²Rt

Direction of flow of electric current is from

((a))
Negative Terminal to Positive Terminal
((b))
Positive Terminal to Negative Terminal
((c))
Both
((d))
None of these

Show Answer

Answer: ((a))

Negative Terminal to Positive Terminal

The Weight of an object on Earth is 600 N. What will be its weight on moon?

((a))
0 N
((b))
600 N
((c))
Less than 600 N
((d))
More than 600 N

Show Answer

Answer: ((a))

0 N

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