The correction for sag is

ometimes additive and sometimes subtractive

The correction applied to the measured base of length ‘L’ is

ag = L³w²/24P² where w is the weight of tape/m

lope = (h²/2L) + (h⁴/8L³) where h is height difference of end supports

ne minute arc of the great circle passing through two points

Local attraction in compass surveying may exist due to

ncorrect levelling of the magnetic needle

riction of the needle at the pivot

resence of magnetic substances near the instrument

Which of the following is not the function of levelling head ?

o support the main part of the instrument

o attach the theodolite to the tripod

o provide a means for leveling the theodolite

The length of a chain is measured from

utside of one handle to inside of other handle

entre of one handle to centre of other handle

utside of one handle to outside of other handle

utside of one handle to inside of other handle

nside of one handle to inside of other handle

The allowable length of an offset depends upon the

ethod of setting out the perpendiculars and nature of ground

The error due to eccentricity of inner and outer axes can be eliminated by

aking both face observations and taking the mean of the two

eading both verniers and taking the mean of the two

aking both face observations and taking the mean of the two

aking mean of several readings distributed over different portions of the graduated circle

A ’level line’ is a

ine passing through the center of cross hairs and the center of eye piece

ine parallel to the mean spheriodal surface of earth

ine passing through the center of cross hairs and the center of eye piece

ine passing through the objective lens and the eye-piece of a dumpy or tilting level

The following sights are taken on a “turning point”

oresight and intermediate sight

A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads

back bearing of the forward line

equal to 360¬∞-azimuth of the forward line.

The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as

needle is always kept sensitive

An internal focussing type surveying telescope, may be focussed by the movement of

objective glass of the telescope

The slope correction may be ignored if

to slope of the ground is say 1 in 19

the eyepiece is adjusted for clear vision of the cross hairs

the slope of the ground is less than 3¬∞

to slope of the ground is say 1 in 19

The distance between steps for measuring down hill to obtain better accuracy

decreases with increase of slope

two plano-convex lenses short distance apart, with the convex surfaces facing each other.

decreases with decrease of slope

increases with increase of slope

decreases with increase of slope

Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of strips of equal width, is equal to

one third the width of a strip, multiplied by the sum of two extreme offsets, four times the sum of the remaining odd offsets, and twice the sum of the even offsets

half the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets, and thrice the sum of the even offsets

one third the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets

one third the width of a strip, multiplied by the sum of two extreme offsets, four times the sum of the remaining odd offsets, and twice the sum of the even offsets

one sixth the width of a strip, multiplied by the sum of the two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets

To set out a parallel from a given inccessible point to a given line AB, the following observations and made Distance AB and angle PAM = a and angle PBA = b are measured where Mis a point on the line BA produced. The perpendicular to the desired parallel line from A and B are :

[h1 + hn + 2(h3 + h5 + ... + hn - 2) + 4(h2 + h4 + ... + hn - 1)]

492 + Mcqs in Surveying in Civil Engineering Page 7 McqOptions

301.	Which of the following angles can be set out with the help of French cross staff?
A.	5° only
B.	0° only
C.	ither 45° or 90°
D.	ny angle
Answer» D. ny angle

302.	The correction for sag is
A.	lways additive
B.	lways subtractive
C.	lways zero
D.	ometimes additive and sometimes subtractive
Answer» C. lways zero

303.	The graduations in prismatic compassi) are invertedii) are uprightiii) run clockwise having 0° at southiv) run clockwise having 0° at northThe correct answer is
A.	i) and (iii)
B.	i) and (iv)
C.	ii) and (iii)
D.	ii) and (iv)
Answer» B. i) and (iv)

304.	If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by
A.	in z = sec φ . cos δ
B.	os z = sec φ . cos δ
C.	an z = sec φ . cos δ
D.	one of these
Answer» B. os z = sec φ . cos δ

305.	If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by
A.	in H = tan φ . cot δ
B.	os H = tan φ . cot δ
C.	an H = tan φ . cot δ
D.	one of these
Answer» C. an H = tan φ . cot δ

306.	The flying height of the camera is 1,000 m above mean ground level, the distance of the top of a building from a nadir point is 10 cm and the relief displacement of building is 7.2 mm. The height of the building, is
A.	2 m
B.	2 m
C.	2 m
D.	2 m
Answer» D. 2 m

307.	If the intercept on a vertical staff is ob-served as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is
A.	.5 m
B.	5 m
C.	0 m
D.	5 m
Answer» E.

308.	If the general ground level of any area is 10% of the flying height, the principal points may be used as the centers of radial directions for small scale mapping even in tilted photograph up to
A.	°
B.	°
C.	°
D.	°
Answer» D. °

309.	The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The latitude of the place, is
A.	0°
B.	0°
C.	0°
D.	0°
Answer» E.

310.	If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is
A.	0°
B.	5°
C.	0°
D.	5°
Answer» D. 5°

311.	The correction applied to the measured base of length ‘L’ is
A.	ension = (P - Ps)L/AE
B.	ag = L³w²/24P² where w is the weight of tape/m
C.	lope = (h²/2L) + (h⁴/8L³) where h is height difference of end supports
D.	ll the above
Answer» E.

315.	In an internal focussing type of telescope, the lens provided is
A.	oncave
B.	onvex
C.	lano-convex
D.	lano-concave
Answer» B. onvex

319.	The difference of height of two points whose parallax difference is 0.8 mm on a pair of stereo pair taken from a height ‘H’ is 100 m. If mean photo base is 95.2 mm, the flying height is
A.	,000 m
B.	0,000 m
C.	2,000 m
D.	4,000 m
Answer» D. 4,000 m

321.	Overturning of vehicles on a curve can be avoided by using
A.	ompound curve
B.	ertical curve
C.	everse curve
D.	ransition curve
Answer» E.

322.	The solar tidal force divided by lunar tidal force is
A.	/3
B.	/2
C.	/4
D.	/4
Answer» C. /4

312.	A Nautical mile is
A.	ne minute arc of the great circle passing through two points
B.	ne minute arc of the longitude
C.	855.109 m
D.	ll the above
Answer» E.

313.	Local attraction in compass surveying may exist due to
A.	ncorrect levelling of the magnetic needle
B.	oss of magnetism of the needle
C.	riction of the needle at the pivot
D.	resence of magnetic substances near the instrument
Answer» E.

314.	Which of the following is not the function of levelling head ?
A.	o support the main part of the instrument
B.	o attach the theodolite to the tripod
C.	o provide a means for leveling the theodolite
D.	one of the above
Answer» E.

316.	If the equatorial distance between two meridians is 100 km, their distance at 60° latitude will be
A.	000 km
B.	00 km
C.	00 km
D.	00 km
Answer» E.

317.	The length of a chain is measured from
A.	entre of one handle to centre of other handle
B.	utside of one handle to outside of other handle
C.	utside of one handle to inside of other handle
D.	nside of one handle to inside of other handle
Answer» C. utside of one handle to inside of other handle

318.	The allowable length of an offset depends upon the
A.	egree of accuracy required
B.	ethod of setting out the perpendiculars and nature of ground
C.	cale of plotting
D.	ll of the above
Answer» E.

320.	The error due to eccentricity of inner and outer axes can be eliminated by
A.	eading both verniers and taking the mean of the two
B.	aking both face observations and taking the mean of the two
C.	ouble sighting
D.	aking mean of several readings distributed over different portions of the graduated circle
Answer» B. aking both face observations and taking the mean of the two

323.	In the double application of principle of reversion, the apparent error is
A.	qual to true error
B.	alf the true error
C.	wo times the true error
D.	our times the true error
Answer» E.

324.	The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured
A.	ormal to base line
B.	arallel to base line
C.	oth (A) and (B)
D.	either (A) nor (B)
Answer» C. oth (A) and (B)

325.	The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is
A.	= bH/f
B.	=f/bH
C.	= b/fH
D.	= H/bf
Answer» B. =f/bH

Explore topic-wise MCQs in Civil Engineering.

Which of the following angles can be set out with the help of French cross staff?

The correction for sag is

The graduations in prismatic compassi) are invertedii) are uprightiii) run clockwise having 0° at southiv) run clockwise having 0° at northThe correct answer is

If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by

If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by

The flying height of the camera is 1,000 m above mean ground level, the distance of the top of a building from a nadir point is 10 cm and the relief displacement of building is 7.2 mm. The height of the building, is

If the intercept on a vertical staff is ob-served as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is

If the general ground level of any area is 10% of the flying height, the principal points may be used as the centers of radial directions for small scale mapping even in tilted photograph up to

The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The latitude of the place, is

If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is

The correction applied to the measured base of length ‘L’ is

A Nautical mile is

Local attraction in compass surveying may exist due to

Which of the following is not the function of levelling head ?

In an internal focussing type of telescope, the lens provided is

If the equatorial distance between two meridians is 100 km, their distance at 60° latitude will be

The length of a chain is measured from

The allowable length of an offset depends upon the

The difference of height of two points whose parallax difference is 0.8 mm on a pair of stereo pair taken from a height ‘H’ is 100 m. If mean photo base is 95.2 mm, the flying height is

The error due to eccentricity of inner and outer axes can be eliminated by

Overturning of vehicles on a curve can be avoided by using

The solar tidal force divided by lunar tidal force is

In the double application of principle of reversion, the apparent error is

The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured

The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is

A ’level line’ is a

The horizontal angle between the true meridian and magnetic meridian at a place is called

The following sights are taken on a “turning point”

The declination and right ascension of the sun becomes 23° 27' S and 270° respectively on

The declination and right ascension of the sun becomes 23° 27' N and 90° respectively on

23 cm × 23 cm photographs are taken from a flying height with a camera of focal length of 3600 m and 15.23 cm respectively. A parallax difference of 0.01 mm represents

If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is

If F is the pull applied at the ends of tape in kg, l is the length of tape between end marks in metres, w is the weight of the tape in kg per metre run, then sag correction

Probable systematic error in precise levelling as recommended by International Geodetic Association should not exceed (where k is in kilometers.)

A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads

The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as

If the whole circle bearing of a line is 180¬∞, its reduced bearing is

In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm. The focussing lens is midway between them when a staff 16.50 m away is focussed. The focal length of the focussing lens, is

The curvature of the earth's surface, is taken into account only if the extent of survey is more than

If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed.

An internal focussing type surveying telescope, may be focussed by the movement of

The slope correction may be ignored if

If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is parallel to the fiducial edge only for

The distance between steps for measuring down hill to obtain better accuracy

Probable accidental error in precise levelling as recommended by International Geodetic Association, should not exceed (where k is in kilometers.)

Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of strips of equal width, is equal to

To set out a parallel from a given inccessible point to a given line AB, the following observations and made Distance AB and angle PAM = a and angle PBA = b are measured where Mis a point on the line BA produced. The perpendicular to the desired parallel line from A and B are :

Plotting of inaccessible points on a plane table, is done by

is a conventional sign of

The radius of a simple circular curve is 300 m and length of its specified chord is 30 m. The degree of the curve is

326.	A ’level line’ is a
A.	orizontal line
B.	ine parallel to the mean spheriodal surface of earth
C.	ine passing through the center of cross hairs and the center of eye piece
D.	ine passing through the objective lens and the eye-piece of a dumpy or tilting level
Answer» C. ine passing through the center of cross hairs and the center of eye piece

327.	The horizontal angle between the true meridian and magnetic meridian at a place is called
A.	zimuth
B.	eclination
C.	ocal attraction
D.	agnetic bearing
Answer» C. ocal attraction

328.	The following sights are taken on a “turning point”
A.	oresight only
B.	acksight only
C.	oresight and backsight
D.	oresight and intermediate sight
Answer» D. oresight and intermediate sight

329.	The declination and right ascension of the sun becomes 23° 27' S and 270° respectively on
A.	arch 21
B.	une 21
C.	eptember 21
D.	ecember 22
Answer» E.

330.	The declination and right ascension of the sun becomes 23° 27' N and 90° respectively on
A.	arch 21
B.	une 21
C.	eptember 21
D.	ecember 22
Answer» C. eptember 21

331.	23 cm × 23 cm photographs are taken from a flying height with a camera of focal length of 3600 m and 15.23 cm respectively. A parallax difference of 0.01 mm represents
A.	m
B.	m
C.	m
D.	m
Answer» B. m

332.	If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is
A.	R²E/90°
B.	R²E/180°
C.	R²E/270°
D.	R²E/360°
Answer» C. R²E/270°

333.	If F is the pull applied at the ends of tape in kg, l is the length of tape between end marks in metres, w is the weight of the tape in kg per metre run, then sag correction
A.	30 (tan Œ∏ - 1) m
B.	30 (cot Œ∏ - 1) m.
Answer» B. 30 (cot Œ∏ - 1) m.

334.	Probable systematic error in precise levelling as recommended by International Geodetic Association should not exceed (where k is in kilometers.)
A.	1.770 m.
B.	¬± 0.1 k mm
C.	¬± 0.2 k mm
D.	¬± 0.1 k
Answer» E.

335.	A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads
A.	azimuth of the forward line
B.	bearing of the. forward line
C.	back bearing of the forward line
D.	equal to 360¬∞-azimuth of the forward line.
Answer» B. bearing of the. forward line