INDIABIX - TNP_Pinoybix Section 4-5

The difference between the sum of the angles of a spherical triangle on the earth's surface and the angles of the corresponding plane triangle for every 195.5 km2 of area is only A. 1 second B. 5 second C. 10 second D. 15 second

A. 1 second

The difference is length between the arc and the subtended chord on the surface of the earth for a distance of 18.2 km is only A. 10 mm B. 30 mm C. 50 mm D. 100 mm

A. 10 mm

In geodetic surveying, the curvature of the earth is taken into consideration. A. Agree B. Disagree

A. Agree

In high latitudes, the diurnal variation of the magnetic needle is greater. A. Agree B. Disagree

A. Agree

The longest of the chain lines used in making a survey is generally regarded as a base line. A. Agree B. Disagree

A. Agree

The method of measuring distance by pacing is chiefly used in A. reconnaissance surveys B. preliminary surveys C. location surveys D. all of these

A. reconnaissance surveys

The angle between the reflecting surfaces of a prism square is A. 30° B. 45° C. 60° D. 75°

B. 45°

The bearing of a line in the direction of the progress of survey is called back bearing A. Yes B. No

B. No

When the length of offset is 20 m, it is called A. short B. long

B. long

An open cross-staff is commonly used for setting out A. short offsets B. long offsets C. oblique offsets D. none of these

B. long offsets

An invar tape is generally used for accurate measurement of distance because it possesses A. zero B. low C. high D. None of these

B. low

If a chain is used at a temperature A. equal to B. lower than C. higher than

B. lower than

If a chain is used at a temperature at which it was calibrated, the error in measured length is positive. A. equal to B. lower than C. higher than

B. lower than

The positive error makes the measured distance A. less than B. more than

B. more than

The surveying used to determine additional details such as boundaries of fields, is called A. city surveying B. location surveying C. cadastral surveying D. topographical surveying

C. cadastral surveying

A base line in a chain survey A. checks the accuracy of the framework B. enables the surveyor to locate the interior details which are far away from the main chain lines C. fixes up the directions of all other lines D. all of the above

C. fixes up the directions of all other lines

A scale used for measuring fractional parts of the smallest division of the main scale is known as vernier scale. A. Correct B. Incorrect

A. Correct

If the fore bearing of a line is N 26° 35′ W, its back bearing will be A. S 26° 35′ E B. S 26° 35′ W C. N 26° 35′ E D. N 53° 25′ W

A. S 26° 35′ E

Due to the magnetic influence of the earth, the magnetic needle of the prismatic compass will be inclined downward towards the pole. This inclination of the needle with the horizontal is known as A. true bearing B. dip C. local attraction D. magnetic declination

B. dip

A tie line in a chain surveying A. checks the accuracy of the framework B. enables the surveyor to locate the interior details which are far away from the main chain lines C. fixes up the directions of all other lines D. all of the above

B. enables the surveyor to locate the interior details which are far away from the main chain lines

For setting out an offset at an angle of 45°, A. open B. french C. adjustable D. none of these

B. french

The diurnal variation of the magnetic needle is A. more B. less

B. less

The obstacle, which obstructs vision but not chaining, is a A. river B. pond C. hill D. all of these

C. hill

Direct ranging is possible only when the end stations are A. close to each other B. not more than 100 m apart C. mutually intervisible D. located at highest points in the sea

C. mutually intervisible

The instrument attached to the wheel of a vehicle in order to measure the distance travelled, is called A. passometer B. pedometer C. odometer D. speedometer

C. odometer

The line in which the plane passing through the given point and the north and south poles intersects the surface of the earth, is called A. arbitrary meridian B. magnetic meridian C. true meridian D. none of these

C. true meridian

If the fore bearing of a line is A. 36° 15′ B. 126° 15′ C. 143° 45′ D. 216° 15′

D. 216° 15′

At the magnetic poles, the amount of dip is A. 0° B. 45° C. 60° D. 90°

D. 90°

Chain surveying is most suitable when A. area to be surveyed is small B. ground is fairly level and open with simple details C. plans are required on a large scale D. all of the above

D. all of the above

Which of the following statement is correct? A. The line ranger is used for fixing intermediate points on the chain lines. B. The indirect ranging is resorted to when the ends of a line are not intervisible due to high ground. C. The chainman at the forward end of the chain is called leader. D. all of the above

D. all of the above

Which of the following statement is wrong? A. The magnetic meridian coincides with the true meridian at all the places B. The magnetic meridian does not vary from place to place on the earth's surface. C. The magnetic declination at a place is constant. D. all of the above

D. all of the above

The accuracy in laying down the perpendicular offsets and in measuring them depends upon A. scale of plotting B. length of offset C. importance of the object D. all of these

D. all of these

The instrument, belonging to a class of reflecting instrument, is A. line ranger B. box sextent C. prismatic compass D. all of these

D. all of these

The adjustable cross-staff is used for setting out an offset A. at an angle of 45° B. at an angle of 60° C. at a right angle D. at any angle

D. at any angle

A scale which has a common representative fraction, but read in different measures, is called a A. plain scale B. diagonal scale C. shrunk scale D. comparative scale

D. comparative scale

The working from whole to the part is done in surveying in order to ensure that A. survey work is completed more quickly B. number of errors is minimum C. plotting is done more quickly D. errors and mistakes of one portion do not affect the remaining portion

D. errors and mistakes of one portion do not affect the remaining portion

The horizon glass in an optical square is A. wholly silvered B. wholly unsilvered C. one-fourth silvered and three-fourth unsilvered D. half silvered and half unsilvered

D. half silvered and half unsilvered

The horizontal angle between the true meridian and magnetic meridian is known as A. true bearing B. dip C. local attraction D. magnetic declination

D. magnetic declination

The curvature of the earth is taken into consideration if the limit of survey is A. 50 to 100 km2 B. 100 to 200 km2 C. 200 to 250 km2 D. more than 250 km2

D. more than 250 km2

When the object lies on the left-hand side of the chain line, then while taking offset with an optical square, it is held in A. left-hand upside-down B. right hand upside down C. left hand upright D. right hand upright

D. right hand upright

The building is an example of obstacle in which chaining, and vision are both obstructed. A. Correct B. Incorrect

A. Correct

The direction of a true meridian at a station is invariable. A. Right B. Wrong

A. Right

In a field book, the booking is commenced at the bottom of a page and worked upwards. A. True B. False

A. True

In order to fix up the directions of the survey lines in the compass survey, the horizontal angle between the survey line and a fixed line of reference is measured. This fixed line reference is the magnetic meridian. A. True B. False

A. True

An optical square is used for the same purpose as the cross-staff, but it is more accurate. A. Yes B. No

A. Yes

The correction to the measured length will be negative when the chain is held on the ground sloping upwards. A. Yes B. No

A. Yes

The representative fraction of the scale is the ratio of the distance on the map or drawing to the corresponding distance on the ground A. Yes B. No

A. Yes

With a simple vernier, readings can be taken in one direction only. A. Yes B. No

A. Yes

A line joining the apex of a triangle to some fixed point on the opposite side is called a A. check line B. tie line C. base line D. none of these

A. check line

The error in measured length due to incorrect holding of chain is A. compensating error B. cumulative error C. instrumental error D. negative error

A. compensating error

It is more convenient and gives better results while measuring horizontal distance A. down the hill B. up the hill C. in plane areas D. none of these

A. down the hill

The lines passing through points at which the magnetic declination is equal at a given time are called A. isogonic lines B. agonic lines C. isoclinic lines D. none of these

A. isogonic lines

The instrument used for setting out an offset at a right angle, is called A. open cross-staff B. French cross-staff C. adjustable cross-staff D. optical square

A. open cross-staff

The error in measured length due to sag of chain or tape is known as A. positive error B. negative error C. compensating error D. instrumental error

A. positive error

The obstacle, which obstructs chaining but not vision, is a A. river B. hill C. rising ground D. all of these

A. river

Chain surveying consists of the arrangement of framework of triangles because a triangle is the only simple plane figure which can be plotted uniquely if A. three sides B. three angles C. one side and two angles D. one angle and two sides

A. three sides

The bearing observed with a prismatic compass is A. whole circle bearing B. quadrantal bearing C. both of these D. none of these

A. whole circle bearing

The index glass in an optical square is A. wholly silvered B. wholly unsilvered C. one-fourth silvered and three-fourth unsilvered D. half silvered and half unsilvered

A. wholly silvered

In a whole circle bearing system, S 25° 15′ E corresponds to A. 115° 15′ B. 154° 45′ C. 205° 15′ D. 334° 45′

B. 154° 45′

The correction to be applied to each 30 m chain for a line measured along a slope of θ is A. 30 (1 - sin θ) B. 30 (1 - cos θ) C. 30 (1 - tan θ) D. 30 (1 - cot θ)

B. 30 (1 - cos θ)

When the whole circle bearing of two lines AB and AC are 115 and 41 respectively, then the included angle BAC will be A. 41° B. 74° C. 115° D. 156°

B. 74°

An average length of a pace is A. 60 cm B. 80 cm C. 100 cm D. 120 cm

B. 80 cm

In an optical square, the angle between the first incident ray and the last reflected ray is A. 60° B. 90° C. 120° D. 150°

B. 90°

The reconnaissance surveying is carried out to determine the artificial features such as roads, railways, canals, buildings etc. A. True B. False

B. False

When the position of a point is to be fixed most accurately, it should be located by oblique offsets. A. True B. False

B. False

A metallic tape is made of an alloy of nickel and steel. A. True B. False

B. False (cloth and metal

Which of the following statement is correct? A. The error in measured length due to bad ranging is compensating error. B. If the chain used in measuring a distance is too short, the error is positive error. C. The error in measured length due to careless holding of chain is cumulative error. D. When the pull applied while measuring with a tape, is more than the standard pull for that tape, the error in measured length is positive.

B. If the chain used in measuring a distance is too short, the error is positive error.

A French cross-staff has a magnetic compass at the top. A. Right B. Wrong

B. Wrong

When the length of chain used in measuring distance is shorter than the standard length, the error in measured distance will be compensating error. A. Right B. Wrong

B. Wrong

The horizontal angle between the true meridian and a survey line is called A. magnetic bearing B. azimuth C. dip D. magnetic declination

B. azimuth

The true or geographical meridians through the various stations A. are parallel B. converge to the poles C. converge from north pole to south pole D. converge from south pole to north pole

B. converge to the poles

When the length of chain used in measuring distance is longer than the standard length, the error in measured distance will be A. positive error B. negative error C. compensating error D. none of these

B. negative error

When the measured length is less than the actual length, the error is known as A. positive error B. negative error C. compensating error D. instrumental error

B. negative error

The lines of earth's magnetic field run from A. south to north B. north to south C. east to west D. west to east

B. north to south

When the position of a point is to be located accurately by a perpendicular offset, the direction of perpendicular is set out by means of A. theodolite B. optical square C. dumpy level D. planimeter

B. optical square

The bearing observed with a surveyor's compass is A. whole circle bearing B. quadrantal bearing C. both of these D. none of these

B. quadrantal bearing

The optical square is used to measure angles by A. refraction B. reflection C. double refraction D. double reflection

B. reflection

In a direct vernier, the smallest division of a vernier is A. equal to B. shorter than C. longer than D. none of these

B. shorter than

In a retrograde vernier, the smallest division of a vernier is A. equal to B. shorter than C. longer than D. none of these

B. shorter than

In plane surveying, A. The curvature of the earth is taken into consideration B. the surveys extend over small areas C. the surveys extend over large areas

B. the surveys extend over small areas

A line joining some fixed points on the main survey lines, is called a A. check line B. tie line C. base line D. none of these

B. tie line

A plain scale is used to read A. one dimension B. two dimensions C. three dimensions D. all of these

B. two dimensions

The representative fraction 1 / 2500 means that the scale is A. 1 cm = 0.25 m B. 1 cm = 2.5 m C. 1 cm = 25 m D. 1 cm = 250 m

C. 1 cm = 25 m

When 1 cm on a map represents 10 m on the ground, the representative fraction of the scale is A. 1/10 B. 1/100 C. 1/1000 D. 1/10000

C. 1/1000

The limiting length of the offset is A. 5 m B. 10 m C. 15 m D. 20 m

C. 15 m

In a quadrantal system, the bearing of a line is measured A. always clockwise from the south point of the reference meridian towards the line right round the circle B. clockwise or anticlockwise from the east or west whichever is nearer the line towards north or south C. clockwise or anticlockwise from the north or south whichever is nearer the line towards east or west D. none of the above

C. clockwise or anticlockwise from the north or south whichever is nearer the line towards east or west

When (h) is the difference in heights between the extremities of a chain length (l), then the correction for slope required is A. h / l B. h2 / l C. h2 / 2l D. h / el

C. h2 / 2l

If the fore bearing of a line is 36° 15′, its back bearing will be A. 36° 15′ B. 126° 15′ C. 143° 45′ D. 216° 15′

D. 216° 15′

In a whole circle bearing system N 25° 15′ W corresponds to A. 115° 15′ B. 154° 45′ C. 205° 15′ D. 334° 45′

D. 334° 45′

To the sum of the first and last ordinates, add twice the sum of the remaining odd ordinates and four times the sum of all the even ordinates. The total sum thus obtained is multiplied by one-third of the common distance between the ordinates and the result gives the required area. This rule of finding the area is called. A. mid-ordinate rule B. trapezoidal rule C. average ordinate rule D. Simpson's rule

D. Simpson's rule

A plumb bob is required A. when measuring distances along slopes in a hilly country B. for accurate centering of a theodolite over a station mark C. for testing the verticality of ranging poles D. all of the above

D. all of the above

In a whole circle system, the bearing of a line is measured A. always clockwise from the south point of the reference meridian towards the line right round the circle B. clockwise or anticlockwise from the east or west whichever is nearer the line towards north or south C. clockwise or anticlockwise from the north or south whichever is nearer the line towards east or west D. none of the above

D. none of the above

In order to determine the natural features such as valleys, rivers, lakes etc., the surveying preferred is A. city surveying B. location surveying C. cadastral surveying D. topographical surveying

D. topographical surveying