Worksheets23/12/25 Introduction To Surveying - Part 7 & 8
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
What is the Representative Fraction (R.F.) of a scale?
a)
Actual length ÷ drawing length
b)
Drawing length ÷ actual length
c)
Scale length ÷ unit length
d)
Maximum distance ÷ drawing length
2.
A plain scale is mainly used to read measurements in
a)
One unit only
b)
Two consecutive units
c)
Three consecutive units
d)
Fractional units only
3.
Which scale can read measurements up to two decimal places?
a)
Plain scale
b)
Comparative scale
c)
Diagonal scale
d)
Scale of chords
4.
The formula for length of a scale is
a)
R.F. ÷ maximum distance
b)
Maximum distance ÷ R.F.
c)
R.F. × maximum distance
d)
Scale length ÷ R.F.
5.
A vernier scale is best described as
a)
A fixed main scale
b)
A scale for angles only
c)
A modified form of diagonal scale
d)
A scale for two units only
6.
The least count of a vernier scale is given by
a)
n ÷ s
b)
s × n
c)
s ÷ n
d)
n − s
7.
Assertion: A forward vernier has divisions shorter than main scale divisions. Reason: Forward vernier increases in the same direction as the main scale.
a)
Both A and R are true and R explains A
b)
Both A and R are true but R does not explain A
c)
A is true R is false
d)
A is false R is true
8.
Assertion: Comparative scale uses the same R.F. for different units. Reason: Comparative scale is used to measure angles.
a)
Both A and R are true and R explains A
b)
Both A and R are true but R does not explain A
c)
A is true R is false
d)
A is false R is true
9.
Which scale is used to construct or measure angles without a protractor?
a)
Diagonal scale
b)
Vernier scale
c)
Comparative scale
d)
Scale of chords
10.
If 10 vernier divisions equal 9 main scale divisions and 1 MSD = 1 mm the least count is
a)
0.9 mm
b)
1.0 mm
c)
0.1 mm
d)
0.01 mm
100 %
