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Surveying

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

which of the following scales is largest one?
a.
1cm = 50m
b.
1:42000
c.
R.F =civil1_files/i0020000.jpg
d.
1cm = 50km
 

 2. 

If the probable error in single observation is civil1_files/i0030000.jpg0.04 m and that of the mean is civil1_files/i0030001.jpg0.01 m then the number of observations are
a.
4
b.
10
c.
16
d.
64
 

 3. 

Theory of probability is applied to
a.
accidental errors only
c.
both accidental and cumulative errors
b.
cumulative errors only
d.
none of the above
 

 4. 

A survey is conducted with a view to prepare the map of an area to a scale of 1: 1000 If a scale with least count of 0.1 mm is used for plottiog what whould be the accuracy in length measurement in the field ?
a.
True error
b.
weighted observation
c.
conditional error
d.
residual error
 

 5. 

The difference between the most probable value of a quantity and its observed value is
a.
true error
b.
weighted observation
c.
conditional error
d.
residual error
 

 6. 

The error due to bad ranging is
a.
cummulative; positive
c.
compensating
b.
cumulative;negative
d.
cumulative; positive or negative
 

 7. 

‘Offsets’ are
a.
short measurements from chain line
c.
sets of minor instruments in chain surveying
b.
ties or check lines which are perpendicular to chain line
d.
chain lines which go out of alignment
 

 8. 

which of the following instruments is generally used for base line measurements?
a.
chain
b.
metallic tape
c.
steel tape
d.
invar tape
 

 9. 

An invar tape is made of an alloy of
a.
copper and steel
b.
brass and nickel
c.
brass and steel
d.
nickel and steel
 

 10. 

Ranging is the process of
a.
fixing ranging rods on the extremities of the area
c.
taking offsets from a chain line
b.
aligning the chain in a staignt line between two extremities.
d.
chaining over a range of mountains
 



 
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