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
(A) 2.828
(B) 3.828
(C) 1.828
(D) 0.828

1 Answer

Answer :

(A) 2.828

Related questions

Description : The length of a transition curve, is governed by (A) Rate of change of radial acceleration (B) Rate of change of super-elevation (C) Both (a) and (b) (D) Neither (a) nor (b)

Last Answer : Answer: Option C

Description : If V is the design speed of vehicles in km/hour, the change of radial acceleration in metres/sec3 , is (A) 65/(70 + V) (B) 60/(70 + V) (C) 70/(65 + V) (D) 70/(60 + V)

Last Answer : Answer: Option C

Description : The total length of a valley formed by two gradients - 3% and + 2% curve between the two tangent points to provide a rate of change of centrifugal acceleration 0.6 m/sec2 , for a design speed 100 kmph, is (A) 16.0 m (B) 42.3 m (C) 84.6 m (D) None of these

Last Answer : Answer: Option C

Description : If the rate of change of the super-elevation along a curved portion of a 7 metre wide road is 1 in 150 and the maximum super-elevation allowed is 1 in 15, the maximum length of the transition curve to be provided at either end, is (A) 65 m (B) 70 m (C) 75 m (D) 80 m

Last Answer : Answer: Option B

Description : If the length of a transition curve to be introduced between a straight and a circular curve of  radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is  (A) 0.70 m  (B) 1.70 m  (C) 2.70 m  (D) 3.70 m

Last Answer : (C) 2.70 m 

Description : With usual notations, the expression V²/gR represents  (A) Centrifugal force  (B) Centrifugal ratio  (C) Super elevation  (D) Radial acceleration 

Last Answer : (B) Centrifugal ratio

Description : If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum deflection angle to locate its junction point, is (A) 1°43' 08" (B) 1°43' 18" (C) 1°43' 28" (D) 1°43' 38"

Last Answer : (C) 1°43' 28"

Description : If the radius of a main curve is 300 m and length of the transition curve is 100 m, the angle with tangent to locate the junction point, is (A) 1° 11' (B) 2° 11' (C) 3° 11' (D) 4° 11'

Last Answer : Answer: Option C

Description : The radius of curvature provided along a transition curve, is (A) Minimum at the beginning (B) Same throughout its length (C) Equal to the radius of circular curve (D) Varying from infinity to the radius of circular curve

Last Answer : Answer: Option D

Description : If degree of a road curve is defined by assuming the standard length of an arc as 30 metres, the radius of 1° curve is equal (A) 1719 m (B) 1146 m (C) 1046 m (D) 1619 m

Last Answer : Answer: Option A

Description : If R is the radius of a main curve and L is the length of the transition curve, the shift of the curve, is (A) L/24 R (B) L2 /24 R (C) L3 /24 R (D) L4 /24 R

Last Answer : Answer: Option B

Description : In case of a hair pin bend of a highway, (A) Minimum radius of inner curve is 14 m (B) Minimum radius of transition is 15 m (C) Circular compound curve may be provided (D) All the above

Last Answer : Answer: Option D

Description : Two bodies of equal mass are moving in circular paths at equal speed. The first body moves in a circle whose radius is twice as great as that of the second. The ratio of the centripetal or radial acceleration of the first body to that of the second is: w) 1 to 4 x) 1 to 3 y) 1 to 2 z) 1 to 1

Last Answer : ANSWER: Y -- 1 TO 2

Description : If is the speed of a locomotive in km per hour, g is the acceleration due to gravity, is the distance between running faces of the rails and is the radius of the circular curve, the required super elevation is (A) gV²/GR (B) Rg/GV² (C) GR/gV² (D) GV²/gR

Last Answer : (D) GV²/gR

Description : Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is (A) 0.225 m (B) 0.589 m (C) 1.250 m (D) None of these

Last Answer : Answer: Option B

Description : The total value of extra widening required at a horizontal curve on a two lane hill road of radius 42 m for a design speed of 50 kmph and for vehicles with wheel base 6 m, is (A) 0.500 m (B) 0.589 m (C) 1.089 m (D) 0.089 m

Last Answer : Answer: Option C

Description : A 3% downgrade curve is followed by a 1% upgrade curve and rate of change of grade adopted is 0.1% per 20 m length. The length of the respective vertical curve is : (a) 800 m (b) 200 m (c) 100 m (d) 400 m

Last Answer : (a) 800 m

Description : In an ideal transition curve, the radius of curvature (A) Is constant (B) At any point is directly proportional to its distance from the point of commencement (C) Is inversely proportional to the radius of main curve (D) Is directly proportional to the radius of main curve

Last Answer : Answer: Option C

Description : If the coefficient of friction on the road surface is 0.15 and a maximum super-elevation 1 in 15 is provided, the maximum speed of the vehicles on a curve of 100 metre radius, is (A) 32.44 km/hour (B) 42.44 kg/hour (C) 52.44 km/hour (D) 62.44 km/hour

Last Answer : Answer: Option C

Description : If V is speed of a moving vehicle, r is radius of the curve, g is the acceleration due to gravity, W is the width of the carriageway, the super elevation is (A) WV/gr (B) W²V/gr (C) WV²/gr (D) WV/gr²

Last Answer : Answer: Option C

Description : If the radius of a simple curve is 600 m, the maximum length of the chord for calculating offsets, is  taken  (A) 15 m  (B) 20 m  (C) 25 m  (D) 30 m

Last Answer : (D) 30 m

Description : The radius of a simple circular curve is 300 m and length of its specified chord is 30 m. The degree of the curve is (A) 5.73° (B) 5.37° (C) 3.57° (D) 3.75°

Last Answer : (A) 5.73°

Description : If V is the design speed in km/hour and R is the radius of the curve of a hill road, the super￾elevation (A) e = V / 127 R (B) e = V² / 127 R (C) e = V ²/ 225 R (D) e = V / 225 R

Last Answer : Answer: Option C

Description : Consider the following statements: Mitra's hyperbolic transition design is based on the principle that : 1. Flow depth in the canal, as well as the discharge, is constant 2. width of the canal varies along with the discharge 3. Rate ... a) 1, 2 and 3 b) 1 and 2 only c) 2 and 3 only d) 1 and 3 only

Last Answer : d) 1 and 3 only

Description : Design of horizontal curves on highways, is based on (A) Design speed of vehicles (B) Permissible friction on the road surface (C) Permissible centrifugal ratio (D) All the above

Last Answer : Answer: Option D

Description : Pick up the correct statement from the following regarding radial flow centrifugal pumps:  (A) These are provided with volute type or turbine type casings  (B) In involute type of radial flow ... centrifugal pump, is always higher than that of  volute type  (D) All the above 

Last Answer : (D) All the above 

Description : Conversion of dynamic velocity head into static pressure head in a centrifugal pump is the result of : (a) Increasing area of flow between adjacent vanes from inlet to outlet (b) Difference in pressure between suction and delivery ends (c) Radial thrust in pumps (d) Stuffing Box

Last Answer : (b) Difference in pressure between suction and delivery ends

Description : Setting out of Lemniscate transition curves, is done with (A) Perpendicular offsets (B) Radial offsets (C) Deflection angles (D) Polar deflection angles

Last Answer : Answer: Option D

Description : If +0.8% grade meets -0.7% grade and the rate of change of grade for 30 m distance is 0.05, the  length of the vertical curve will be  (A) 600 m  (B) 700 m  (C) 800 m  (D) 900 m

Last Answer : (D) 900 m

Description : Theoretical head developed by a centrifugal pump does not depend upon the __________ the impeller. (A) Radius of (B) Speed of (C) Fluid velocity leaving (D) None of these

Last Answer : (D) None of these

Description : A boy sitting in a rail road car throws a ball straight up into the air. The ball will fall back into his hands when the rail road car is a.moving at constant velocity b.accelerating ... inclined plane, while another identical block B is released for free fall from the same height e.decelerating

Last Answer : a. moving at constant velocity

Description : Critical speed of rotation, N (in rps - rotation per second) of a trammel is equal to (where, g = acceleration due to gravity = 9.81 m/sec 2 and, r = radius of trammel, metre.) (A) (1/2π). √(g/r) (B) (1/π). √(g/r) (C) ½ √(g/r) (D) 2π. √(g/r)

Last Answer : (A) (1/2π). √(g/r)

Description : Pick up the correct statement from the following: (A) The height of head light above road surface, is taken as 0.75 m (B) The beam of head light is up to one degree upwards from the grade of road (C) While designing the valley curve, the height of the object is assumed nil (D) All the above

Last Answer : Answer: Option D

Description : Full amount of extra width of a pavement on the curve, is provided at (A) Beginning of the transition curve (B) Centre of the transition curve (C) Beginning of the circular curve (D) Centre of the circular curve

Last Answer : Answer: Option C

Description : 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) R/15  (C) R/20  (D) R/25 

Last Answer : (C) R/20 

Description : Designation of a curve is made by:  (A) Angle subtended by a chord of any length  (B) Angle subtended by an arc of specified length  (C) Radius of the curve  (D) Curvature of the curve 

Last Answer : (C) Radius of the curve 

Description : If is the length of a sub-chord and is the radius of simple curve, the angle of deflection  between its tangent and sub-chord, in minutes, is equal to  (A) 573 S/R (B) 573 R/S (C) 1718.9 R/S (D) 1718.9 S/R

Last Answer : (D) 1718.9 S/R

Description : If the long chord and tangent length of a circular curve of radius R are equal the angle of deflection, is (A) 30° (B) 60° (C) 90° (D) 120°

Last Answer : D

Description : If D is the degree of the curve of radius R, the exact length of its specified chord, is (A) Radius of the curve sine of half the degree (B) Diameter of the curve sine of half the ... Diameter of the curve cosine of half the degree (D) Diameter of the curve tangent of half the degree

Last Answer : (B) Diameter of the curve × sine of half the degree

Description : The tangent length of a simple circular curve of radius R (A) R tan (B) R tan (C) R sin (D) R sin

Last Answer : Answer: Option B

Description : If L is the length of a moving vehicle and R is the radius of curve, the extra mechanical width b to be provided on horizontal curves, (A) L/R (B) L/2R (C) L²/2R (D) L/3R

Last Answer : Answer: Option C

Description : If the rate of change of grade permitted along a vertical curve is r and total change of grade is g%, the length L of the curve to be provided, is (A) L = (r × 100/g) m (B) L = (g × 100/r) m (C) L = (r + g) × 100m (D) L = [100/(r + g)] m

Last Answer : Answer: Option B

Description : A cylindrical roller 2.5 m in length, 1.75 m in radius when rolled on a road was found to cover the area of 5500 m2. -Maths 9th

Last Answer : NEED ANSWER

Description : A cylindrical roller 2.5 m in length, 1.75 m in radius when rolled on a road was found to cover the area of 5500 m2. -Maths 9th

Last Answer : Solution of the question

Description : The ground surface slopes 1 in 50 along a proposed railway embankment 150 m in length. The height of the embankment at zero chainage is 0.5 m, the width is 11 m and side slopes 2:1. If the falling gradient ... calculated by Prismoidal formula, is (A) 3250 m3 (B) 3225 m3 (C) 3275 m3 (D) 3300 m3

Last Answer : (B) 3225 m3

Description : The maximum radial distance of a Lemniscate curve, having maximum polar angle a, is (A) 3 R (B) 3 R sin2 (C) 3 R (D) 3 R

Last Answer : Answer: Option C

Description : For a curve of radius 100 m and normal chord 10 m, the Rankine's deflection angle, is (A) 0°25'.95 (B) 0°35'.95 (C) 1°25'.53 (D) 2°51'.53

Last Answer : (D) 2°51'.53

Description : Minimum radius of a simple circular curve deflecting through 5°, is (A) 1618.9 m (B) 1816.9 m (C) 1718.9 m (D) 1817.9 m

Last Answer : Answer: Option C

Description : The absolute minimum radius of horizontal curve for a design speed 60 kmph is (A) 131 m (B) 210 m (C) 360 m (D) None of these

Last Answer : Answer: Option D

Description : If the designed speed on a circular curve of radius 1400 m is 80 km/hour, no super-elevation is provided, if the camber, is (A) 4 % (B) 3 % (C) 2 % (D) 1.7 %

Last Answer : Answer: Option C