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Civil Engineering Objective Questions { Surveying }

183.  If the rate of gain of radial acceleration is 0.3 m per sec3 and full centrifugal ratio is developed. On the curve the ratio of the length of the transition curve of same radius on road and railway, is
D. 0.828.
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184. With usual notations, the expression -'17 represents gR
A. centrifugal force
B. centrifugal ratio
C. super elevation
D. radial acceleration.
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185.  An ideal transition curve is
A. cubic parabola
B. cubic spiral
C. clothoid spiral
D. true spiral.
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186.  Perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to
A. shift
B. twice the shift
C. thrice the shift
D. four times the shift.
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187.  The properties of autogenous curve for automobiles are given by
A. true spiral
B. cubic parabola
C. Bernoulli's Lemniscate
D. clothoid spiral.
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188.  If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed.
A. R/10
B. RI15
C. R/20
D. R/25.
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189.  If the radius of a simple curve is 600 m, the maximum length of the chord for calculating offsets, is taken
A. 10 m
B. 15 m
C. 20 m
D. 30 m.
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