Surveying Additional One Mark Online Test

Surveying Additional One Mark Online Test (12th Standard Geography)

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The science of measuring and recording distances, angles, heights and sizes of the earth's surface to obtain data from which accurate plans and maps are made is called

A.Surveying B.Levelling C.Bearing D.Traverse

According to the lesson, which is the most essential piece of equipment used by the geographer, engineer and architect?

A.Clinometer B.Prismatic compass C.Map D.Measuring tape

Consider the following statements:
1) A clinometer is used to measure the height of a tall object.
2) A prismatic compass measures the vertical angle of an object above eye-level.
Which of the statements given above is/are correct?

A.1 only B.2 only C.Both 1 and 2 D.Neither 1 nor 2

Find the odd one out from the things needed to measure the height of a tall object with a clinometer, as listed in the lesson.

A.Tape B.Assistant C.Prismatic compass D.Paper and pencil

While picking a spot to measure the height of a tree with a clinometer, the observer should

A.stand far enough away to see the top of the tree, on level ground with its base B.stand at the base of the tree and look straight up C.stand on raised ground well above the base of the tree D.stand so close that the top of the tree cannot be seen

Looking through the straw at the top of a tree, the clinometer reads 55°. What is the angle of vision from the eye to the top of the tree?

A.55° B.35° C.90° D.145°

Which instrument is used to find the distance from the observer's spot to the base of the object being measured?

A.Clinometer B.Tape C.Prismatic compass D.Protractor

Arrange the first four steps of measuring height with a clinometer in the correct order.
1) Measure distance
2) Pick a spot
3) Find your eye-height
4) Measure angle

A.2, 4, 1, 3 B.2, 1, 4, 3 C.4, 2, 3, 1 D.2, 4, 3, 1

Which trigonometric ratio of the right triangle is used to find the height of the object above eye-level?

A.Sine B.Cosine C.Tangent D.Secant

Q10

In the lesson's example, the angle of vision is 35° and the distance from the tree is 15.6 m. Taking tan 35° = 0.7002, the height of the tree above eye-level (x) is

A.12.56 m B.10.92 m C.15.60 m D.9.28 m

Q11

In the lesson's example, x = 10.92 m and the observer's eye-height is 1.64 m. What is the height (h) of the tree?

A.9.28 m B.10.92 m C.12.56 m D.17.24 m

Q12

Using the lesson's method, an observer with an eye-height of 1.5 m stands 20 m from a pole and finds the angle of vision to its top is 35°. Taking tan 35° = 0.7002, the height of the pole is

A.14.004 m B.15.504 m C.21.500 m D.12.504 m

Q13

Assertion (A): After finding x from the right triangle, the eye-height must be added to get the height of the object.
Reason (R): x represents only the portion of the height of the object from eye-level up.

A.Both A and R are true and R is the correct explanation of A B.Both A and R are true but R is not the correct explanation of A C.A is true but R is false D.A is false but R is true

Q14

When the observer's system is first modelled as a right triangle (Step 6), which measurement is not needed yet?

A.The angle read on the clinometer B.The distance from the object C.The eye-height of the observer D.The position of the observer

Q15

The aluminium ring of a prismatic compass is graduated to

A.1 degree B.10 minutes C.15 minutes D.30 minutes

Q16

In a prismatic compass, the two coloured sunglasses set at a hinge are meant to

A.magnify the degree marking on the ring B.avoid direct sun rays at the eye vane C.stop the oscillating ring D.locate very high objects by reflection

Q17

The sighting vane of a prismatic compass has a horse hair at the centre of a hinged metal frame. In reality this horse hair may be

A.a fine silk thread or a metal wire B.a magnetic needle C.a glass prism D.a coloured glass

Q18

Why is a hinged adjustable mirror set on the outer side of the sighting vane of a prismatic compass?

A.To avoid direct sun rays at the eye vane B.To bring the oscillating ring to a standstill C.To locate a too high or too low object through reflection D.To level the compass on its stand

Q19

Which part of a prismatic compass brings the oscillating circular ring to a standstill?

A.Sighting vane B.Brake pin or knob C.Prism D.Sunglasses

Q20

Match the parts of a prismatic compass with their functions.
A) Prism - 1) Brings the oscillating ring to a standstill
B) Sunglasses - 2) Avoid direct sun rays at the eye vane
C) Adjustable mirror - 3) Magnifies the degree marking on the aluminium ring
D) Brake pin - 4) Locates a too high or too low object

A.A-3, B-2, C-4, D-1 B.A-2, B-3, C-1, D-4 C.A-3, B-4, C-2, D-1 D.A-4, B-2, C-3, D-1

Q21

Consider the following statements about the use of a prismatic compass:
1) The corners of a plot or building can be measured directly.
2) The bends of a road can be measured directly.
3) A meandering canal can be measured only as a whole, without dividing it into segments.
Which of the statements given above is/are correct?

A.1 only B.1 and 2 only C.2 and 3 only D.1, 2 and 3

Q22

A prismatic compass measures the horizontal angle with reference to the

A.magnetic north line B.eye-level line C.base of the object D.top of the object

Q23

In a prismatic compass, the ball and socket arrangement at the base is used for

A.magnifying the ring markings B.levelling C.stopping the needle D.reflecting high objects

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About this Surveying test

This free online practice test covers Surveying from the 12th Standard Geography (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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