LSIT TEST QUESTIONS WITH DETAILED
VERIFIED ANSWERS; ALREADY GRADED A
________is a sudden and perceptible loss or addition to land by
the action of water
A. accretion
B. reliction
C. avulsion
D. erosion - correct answer-
A clear zone avigation easement with a 34:1 slope begins at
ground level 200ft from the end of an active airport runway. The
natural ground slope moving away from a point 200 ft from the
end of the structure is 0.5% in an uphill direction. At what
distance from the end of the runway can a 35ft tall structure be
located and not violate the clear zone easement? - correct
answer- 1634.4ft
34:1=2.94% slope
Difference in slope=2.44%
35/.0244=1434.4
,1434.4+200=1634.4
A closed traverse has a total length of 2181.14 ft. and an error of
closure of 0.37 ft. in the northing and 0.24 ft. in the easting.
What is the ratio of error for the closure?
A. 1:4957
B. 1:5187
C. 1:6319
D. 1:9453 - correct answer- A. 1:4957
error of closure=SQRT(DeltaNorthing^2+DeltaEasting^2)
A compound highway curve, with both curves having interior
angles of 45 degrees, has an approach tangent of N45E. What is
the bearing of the tangent leaving the curve?
A N45E
B S45E
C North
D East - correct answer- B. S45E
A compound highway curve, with both curves having interior
angles of 45deg, has an approach tangent of N45E. What is the
,bearing of the tangent leaving the curves? - correct answer-
S45E
A Digital Elevation Model (DEM) uses __________ to represent
the earth's surface.
A. bare-earth classified liDAR points.
B. fractals
C. bare-earth raster grid
D. a series of non-overlapping triangles. - correct answer- C.
bare-earth raster grid
A fundamental concept underlying the design of most vector-
based GIS is:
A. separate storage of spatial and attribute data components
B. the use of relational databases for all data storage
C. the integration of CAD and network databases
D. the use of four number scales for attribute data - correct
answer- A. separate storage of spatial and attribute data
components
, the basic premise of the "layer model" of GIS design is to
separate spatial and attribute data and store them in separate
locations and systems.
A grid distance in a state plane coordinate system is 5280.00ft
and the scale factor is 0.9999424. What is the surface distance,
assuming no sea level correction is necessary? - correct answer-
5280.30 ft.
Surface distance=grid distance/scale factor
A level has been found to be out of adjustment. IN making a
two-peg test and adjustment, two stakes A and B were set 215ft
apart. When the instrument was set up midway between A and
B, the rod readings were 4.26 on A and 5.15 on B. When the
instrument was set up very close to A, the rod readings were
6.02 on A and 6.79 on B. With the instrument remaining near A,
to what rod reading on B should the cross-hairs be adjusted? -
correct answer- 6.91
At A: 6.02-4.26=1.76
At B: 6.79-5.15=1.64
Difference=0.12
Adjusted rod reading=6.79+0.12=6.91
VERIFIED ANSWERS; ALREADY GRADED A
________is a sudden and perceptible loss or addition to land by
the action of water
A. accretion
B. reliction
C. avulsion
D. erosion - correct answer-
A clear zone avigation easement with a 34:1 slope begins at
ground level 200ft from the end of an active airport runway. The
natural ground slope moving away from a point 200 ft from the
end of the structure is 0.5% in an uphill direction. At what
distance from the end of the runway can a 35ft tall structure be
located and not violate the clear zone easement? - correct
answer- 1634.4ft
34:1=2.94% slope
Difference in slope=2.44%
35/.0244=1434.4
,1434.4+200=1634.4
A closed traverse has a total length of 2181.14 ft. and an error of
closure of 0.37 ft. in the northing and 0.24 ft. in the easting.
What is the ratio of error for the closure?
A. 1:4957
B. 1:5187
C. 1:6319
D. 1:9453 - correct answer- A. 1:4957
error of closure=SQRT(DeltaNorthing^2+DeltaEasting^2)
A compound highway curve, with both curves having interior
angles of 45 degrees, has an approach tangent of N45E. What is
the bearing of the tangent leaving the curve?
A N45E
B S45E
C North
D East - correct answer- B. S45E
A compound highway curve, with both curves having interior
angles of 45deg, has an approach tangent of N45E. What is the
,bearing of the tangent leaving the curves? - correct answer-
S45E
A Digital Elevation Model (DEM) uses __________ to represent
the earth's surface.
A. bare-earth classified liDAR points.
B. fractals
C. bare-earth raster grid
D. a series of non-overlapping triangles. - correct answer- C.
bare-earth raster grid
A fundamental concept underlying the design of most vector-
based GIS is:
A. separate storage of spatial and attribute data components
B. the use of relational databases for all data storage
C. the integration of CAD and network databases
D. the use of four number scales for attribute data - correct
answer- A. separate storage of spatial and attribute data
components
, the basic premise of the "layer model" of GIS design is to
separate spatial and attribute data and store them in separate
locations and systems.
A grid distance in a state plane coordinate system is 5280.00ft
and the scale factor is 0.9999424. What is the surface distance,
assuming no sea level correction is necessary? - correct answer-
5280.30 ft.
Surface distance=grid distance/scale factor
A level has been found to be out of adjustment. IN making a
two-peg test and adjustment, two stakes A and B were set 215ft
apart. When the instrument was set up midway between A and
B, the rod readings were 4.26 on A and 5.15 on B. When the
instrument was set up very close to A, the rod readings were
6.02 on A and 6.79 on B. With the instrument remaining near A,
to what rod reading on B should the cross-hairs be adjusted? -
correct answer- 6.91
At A: 6.02-4.26=1.76
At B: 6.79-5.15=1.64
Difference=0.12
Adjusted rod reading=6.79+0.12=6.91
