Questions with Certified Answers & Rationales.
Terms in this set (121)
How much does an Invar (c)
tape expand and contract
due to change in An Invar tape will expand and contract much less than a steel
temperature, compared to a tape when exposed to the same change in temperature.
Unfortunately, Invar tapes, while extremely accurate, are too
standards steel tape under fragile for normal use. So they are typically used for
the same conditions? measuring baselines or calibrating steel tapes
(a) An Invar tape
expandsand contracts much
more than a steel tape
(b) An Invar tape
expandsand contracts
slightly less than a steel
tape
(c) An Invar tap
expandsand contracts much
less than a steel tape
(d) The two tapes
expandand contract about
the same amount
,How many pins are in a set of (b) 11
chaining pins?
(a) 10
(b) 11
(c) 12
(d) 20
What features distinguish an (b)
add tape?
An add tape has an extra graduated foot beyond the zero mark
(a) The last foot of
eachend is graduated in On a subtract tape, the last foot is graduated into tenths or
tenths or hundredths or a hundredths
foot
(b) There is an
extragraduated foot
beyond the zero mark
(c) There is an
extragraduated foot at the
100 foot end of the tape
(d) There is an
extragraduated food at
both ends of the tape
,How long is a Gunter's Chain? (c) 66 ft
(a) 30 ft
(b) 53 ft
(c) 66 ft
(d) 130 ft
The area of a square one (b) 4400 ft^2
Gunter's chain on a side is
most nearly ( 66 ft )^s = 4356 ft^2
(a) 250 ft^2
(b) 4400 ft^2
(c) 10,000 ft^2
(d) 44,000 ft^2
Most, nearly, what is the area (a) 3 ac
of a rectangle 6 Gunter's
(6 x 66 ft) * (5 x 66 ft)
chains long by 5 Gunter's
------------------------ = 3 ac
chains wide?
43,560 ft^s / ac
(a) 3 ac
(b) 7 ac
(c) 20 ac
(d) 30 ac
, The term "height of (b) the elevation of the line of sight above the datum being used
instrument," as used in
leveling, means
(a) the distance from
theground to the axis of the
telescope
(b) the elevation of
theline of sight above the
datum being used
(c) the height of the line
ofsight above a bench mark
(d) all of the above
(c) by balancing distances to backsights and
Balancing distances to foresights, both curvature of the earth error and
backsights and foresights collimation error are eliminated
eliminates
i. collimation error ii. Refraction error is eliminated by line of sight not being close
curvature of the earth to the ground
errors iii. rod plumb errors Rod plumb error is eliminated by user being careful
Parallax error is eliminated by adjusting eye piece
(a) i only
(b) ii only
(c) i and iii only
(d) i and ii only