500 Best Surveying MCQ
Q17). Direct ranging is possible only when the end stations are
a).close to each other
b).not more than 100 m
c).mutually intervisible
d).located at highest points in the sea
Correct Answer:
mutually intervisible
Explanation:
Q18). The error in measured length due to incorrect holding of chain is
a).compensating error
b).cumulative error
c).instrumental error
d).negative error
Correct Answer:
compensating error
Explanation:
Q19). When the length of chain used in measuring distance is longer than the standard length, the error in measured distance will be
a).positive error
b).negative error
c).compensating error
d).none of these
Correct Answer:
negative error
Explanation:
Q20). The error in measured length due to sag of chain or tape is known as
a).positive error
b).negative error
c).compensating error
d).instrumental error
Correct Answer:
positive error
Explanation:
Q21). When the measured length is less than the actual length, the error is known as
a).positive error
b).negative error
c).compensating error
d).instrumental error
Correct Answer:
negative error
Explanation:
Q22). When (h) is the difference in heights between the extremities of a chain length(l), then the correction for slope required is
a).h/l
b).h2/l
c).h2/2l
d).h/2l
Correct Answer:
h2/2l
Explanation:
Q23). When the length of a chain along a slope of Θ is (l), the correction for slope required is
a).l sin2(Θ/2)
b).l cos2(Θ/2)
c).2l sin2(Θ/2)
d).2l cos2(Θ/2)
Correct Answer:
2l sin2(Θ/2)
Explanation:
Q24). Cumulative errors that occur in chaining are proportional to
a).L
b).√L
c).1/L
d).1/√L
Correct Answer:
L
Explanation: