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Railway Engineering

Railway Engineering
The shape of transition curve used by Indian Railways is

spiral
cubic parabola
sine curve
lemniscate of Bernoulli

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Railway Engineering
Which of the following factors govern the choice of the gauge ?
i) volume and nature of traffic
ii) speed of train
iii) physical features of the country
The correct answer is

both (ii) and (iii)
only (i)
(i), (ii) and (iii)
both (i) and (ii)

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Railway Engineering
The correct relation between curve lead (CL), switch lead (SL) and lead of cros¬sing (L) is given by

L =CL-SL
L = (CL+SL)/2
SL = L + CL
CL = L – SL

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Railway Engineering
For a Broad Gauge route with M+7 sleeper density, number of sleepers per rail length is

20
18
21
19

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Railway Engineering
Consider the following statements : Automatic signaling system results in
1. greater risk
2. higher efficiency
3. avoidance of block instruments
4. higher operating cost of these statements

1 and 4 are correct
I and 2 are correct
3 and 4 are correct
2 and 3 are correct

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Railway Engineering
The reception signal is i) outer signal ii) home signal iii) starter iv) advanced starter The correct answer is

(ii) and (iii)
(iii) and (iv)
(i) and (ii)
(i)and(iv)

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