Question is ⇒ Cross staff is an instrument used for, Options are ⇒ (A) measuring approximate horizontal angles, (B) setting out right angles, (C) measuring bearings of the lines, (D) none of the above, (E) , Leave your comments or Download question paper.

Question is ⇒ Cross staff is an instrument used for, Options are ⇒ (A) measuring approximate horizontal angles, (B) setting out right angles, (C) measuring bearings of the lines, (D) none of the above, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Cross staff is an instrument used for
A.	measuring approximate horizontal angles [Wrong Answer]
B.	setting out right angles [Correct Answer]
C.	measuring bearings of the lines [Wrong Answer]
D.	none of the above [Wrong Answer]
View Answer 47 -14 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ The needle of magnetic compass is generally supported on a
Ball bearing
Bush bearing
Needle bearing
Jewel bearing

⇒ Dumpy level is most suitable when
the instrument is to be shifted frequently
fly levelling is being done over long distance
many readings are to be taken from a single setting of the instrument
all of the above

⇒ A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to.
cumulative, + 0.11 m
compensating, Â± 0.11 m
cumulative, - 0.11 m
none of these

⇒ The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be
equidistant from A and B
closer to the higher station
closer to the lower station
as far as possible from the line AB

⇒ Detailed plotting is generally done by
radiation
traversing
resection
all of the above

⇒ Surveys which are carried out to depict mountains, rivers, water bodies, wooded areas and other cultural details, are known as.
cadastral surveys
city surveys
topographical surveys
guide map surveys

⇒ The magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is.
21Â° 45'
42Â° 15'
42Â° 15' W
21Â° 45' W

⇒ Greater accuracy in linear measurements, is obtained by.
tacheometry
direct chaining
direct taping
all the above.

⇒ Pick up the correct statement from the following :
the eyepiece plays no part in defining the line of sight
the diaphragm plays no part in defining the line of sight
the optical centre of the objective plays no part in defining the line of sight
none of these.

⇒ For true difference in elevations between two points A and B, the level must be set up.
at any point between A and B
at the exact mid point of A and B
near the point A
near the point B.

⇒ The method generally preferred to for contouring an undulating area, is.
chain surveying
plane table surveying
tacheometrical surveying
compass surveying.

⇒ Contour interval is
inversely proportional to the scale of the map
directly proportional to the flatness of ground
larger for accurate works
larger if the time available is more

⇒ A traverse deflection angle is.
A traverse deflection angle is
more than 90Â° but less than 180Â°
the difference between the included angle and 180Â°
the difference between the included angle and 180Â°

⇒ The total change in level along the line is equal to total back sights.
minus total fore sights
the total rises minus total falls
the reduced level of last point minus reduced level of the first point
all the above.

⇒ The whole circle bearing of a line is 290°. Its reduced bearing is.
N 20Â° E
N 20Â° W
N 70Â° W
S 70Â° E

⇒ Two hill tops A and B 20 km apart are intervened by a third top C. If the top most contour of the three hill tops are of the same value, state whether the line of sight AB.
passes clear of hill top C
passes below the hill top C
grazes the hill top C
none of these.

⇒ True meridians are generally preferred to magnetic meridians because.
these converge to a point
these change due to change in time
these remain constant.
None of these.

⇒ In a perfect prismatic compass.
magnetic axis and geometric axis of the needle coincide
ends of the needle and pivot are in same vertical and horizontal planes
pivot is vertically over the centre of the graduated circle
all the above.

⇒ A metallic tape is made of
steel
invar
linen
cloth and wires

⇒ Cross staff is an instrument used for
measuring approximate horizontal angles
setting out right angles
measuring bearings of the lines
none of the above

⇒ When the bubble of the level tube of a level, remains central.
line of sight is horizontal
axis of the telescope is horizontal
line of collimation is horizontal
geometrical axis of the telescope is horizontal.

⇒ Which of the following methods of con-touring is most suitable for a hilly terrain ?
direct method
square method
cross-sections method
tacheometric method

⇒ The maximum tolerance in a 20 m chain is
±2 mm
±3 mm
±5 mm
±8 mm

⇒ An ideal vertical curve to join two gradients, is.
circular
parabolic
elliptical
hyperbolic

⇒ The scale, on which three dimensions can be measured, is known as
Plain scale
Diagonal scale
Chord scale
Vernier scale

⇒ Metric chains are generally available in.
10 m and 20 m length
15 m and 20 m length
20 m and 30 m length
25 m and 100 m length

⇒ Arbitrary bearing is measured by
Theodolite
Magnetic compass
Astronomical observations
Any of the above

⇒ The difference between the included angle and 180°.
vision gets obstructed
chaining gets obstructed
both vision and chaining get obstructed
all the above.

⇒ The limiting length of an offset does not depend upon.
accuracy of the work
method of setting out perpendiculars
scale of plotting
indefinite features to be surveyed.

⇒ Number of subdivisions per metre length of a levelling staff is.
100
200
500
1000