WorksheetsGED103_Quiz 1
Total questions: 19
Worksheet time: 10mins
What is curve surveying?
Measuring and mapping building heights only
Measuring and mapping the curvature of roads, rivers, and other natural features
Calculating land area only
Locating buildings using GPS
Which tools are commonly used in curve surveying?
Microscopes and compasses
Computers only
Total stations, theodolites, and GPS equipment
Saws and paper maps
What is the purpose of introducing curves in roads and railways?
To increase vehicle speed
To facilitate smooth and safe changes in direction
To reduce construction costs
To make roads more curved without safety considerations
Where are curves usually introduced in roadways?
In the middle of a straight path
At the intersection of two straight paths
Only at the beginning of the road
Curves are never introduced in roads
What is a horizontal curve?
A curve that connects two vertical lines
A curve provided where two straight lines intersect in a horizontal plane
A curve used only for railways crossing valleys
A curve that changes elevation
When are vertical curves usually provided?
When two roads intersect horizontally
When a highway or railway crosses a ridge or valley
When roads are perfectly flat
When two horizontal lines meet
What is the main purpose of vertical curves?
To make the transition between different elevation points smooth and comfortable
To increase the speed of vehicles on flat roads
To create sharp turns on highways
To reduce the length of the road
What is a simple curve?
A single arc of a circle tangential to both straight lines of the route
Two or more arcs with centers on opposite sides
A curve with varying radius
A combination of circular and transition curves
What characterizes a compound curve?
It consists of one circular arc
Two or more circular arcs with different radii and centers of curvature on the same side of the tangent
It is used only for sharp turns
It has centers on opposite sides of the tangent
Why are compound curves used?
To avoid cutting and filling soil, especially when space is limited or property boundaries exist
To increase vehicle speed
To create abrupt direction changes
To reduce the road length
What is a reverse curve (also known as an S-curve)?
Two circular arcs with centers on the same side of the tangent
Two circular arcs with centers on opposite sides of the tangent
A curve with a constant radius
A straight line followed by a circular curve
Where are reverse curves commonly used?
To connect two roads at right angles
To connect two parallel roads or railway lines, especially when they intersect at a small angle
On flat, straight highways
Only in mountainous regions
What is the main feature of a transition curve?
It has a fixed radius throughout
It provides a gradual change from a straight line to a circular curve and vice versa, with a radius varying from infinity to a fixed value
It is made of multiple arcs with different centers
It is used only in railways
What is a combined curve?
A simple curve followed by a reverse curve
A simple circular curve combined with transition curves at both ends
A curve with no transition curves
Two compound curves connected
How is a curve designated?
By its length only
By degree of curvature (D) or radius (R)
By the type of vehicle using it
By the speed limit on the road
What does the degree of curvature (D) represent?
The length of the curve
The angle subtended at the center of the curve by a chord or an arc of specified length
The elevation difference between two points
The speed at which a vehicle can safely travel
What is the deflection angle to any point on a curve?
The angle between the forward tangent and the chord
The angle at the point of curvature (P.C) between the back tangent and the chord from P.C to the point on the curve
The angle at the center of the curve only
The angle between the curve and the road surface
What is the tangent distance (T)?
The distance between two points on the curve only
The distance between the point of curvature (P.C) and the point of intersection (V) along the extension of the back tangent
The distance from the start of the curve to the highest point
The distance between two external points on the road
What is the external distance (E)?
The distance between the point of intersection (V) and the midpoint of the curve
The distance between the point of curvature and the end of the road
The radius of the curve
The length of the tangent
