Choice Study Question Set With Answers
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1. How much does an Invar tape expand and contract due to change in tem-
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perature, compared to a standards steel tape under the same conditions?
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(a) An Invar tape expands and contracts much more than a steel tape
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(b) An Invar tape expands and contracts slightly less than a steel tape
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(c) An Invar tap expands and contracts much less than a steel tape
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(d) The two tapes expand and contract about the same amount: (c)
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An Invar tape will expand and contract much less than a steel tape when exposed to th
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e same change in temperature. Unfortunately, Invar tapes, while extremely accurate,
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are too fragile for normal use. So they are typically used for measuring baselines or cal
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ibrating steel tapes
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2. How many pins are in a set of chaining pins?
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(a) 10
(b) 11
(c) 12
(d) 20: (b) 11
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1g/g32
,3. What features distinguish an add tape?
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(a) The last foot of each end is graduated in tenths or hundredths or a foot
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(b) There is an extra graduated foot beyond the zero mark
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(c) There is an extra graduated foot at the 100 foot end of the tape
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(d) There is an extra graduated food at both ends of the tape: (b) An
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add tape has an extra graduated foot beyond the zero mark
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On a subtract tape, the last foot is graduated into tenths or hundredths
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4. How long is a Gunter's Chain?
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2g/g32
,(a) 30 ft g
(b) 53 ft g
(c) 66 ft g
(d) 130 ft: (c) 66 ft
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5. The area of a square one Gunter's chain on a side is most nearly
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(a) 250 ft^2 (b)
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4400 ft^2 (c) 1 g g g
0,000 ft^2 g
(d) 44,000 ft^2: (b) 4400 ft^2
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( 66 ft )^s = 4356 ft^2
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6. Most, nearly, what is the area of a rectangle 6 Gunter's chains long by 5 Gu
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nter's chains wide? g g
(a) 3 ac g
(b) 7 ac g
(c) 20 ac g
(d) 30 ac: (a) 3 ac g g g g
(6 x 66 ft) * (5 x 66 ft)
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------------------------ = 3 ac g g g
43,560 ft^s / ac g g g
7. The term "height of instrument," as used in leveling, means
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(a) the distance from the ground to the axis of the telescope
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(b) the elevation of the line of sight above the datum being used
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3g/g32
, (c) the height of the line of sight above a bench mark
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4g/g32