Engineering Drawing Practice Test 4

1. Match the following.
A. E < 1    i. Rectangular hyperbola
B. E = 1    ii. Hyperbola
C. E > 1    iii. Ellipse
D. E > 1    iv. Parabola

2. Spring index is 10 and diameter of wire is 10 mm. Outer diameter of coil is __________

3. If the distance from the focus is 3 units and the distance from the directrix is 3 units, then how much is the eccentricity?

4. The curve which has eccentricity zero is _______

5. Arrange the following stages in a sequence, such that they result in an ogee curve between two parallel lines AB and CD, such that they are the tangents to the arc.
m) Join the adjacent ends B and C with a straight line.
n) Divide the line BC into four parts using the points P₁, P₂, P₃.
o) Draw lines such that they pass through the points P₁, P₂, P₃, and are perpendicular to the line BC.
p) Draw the perpendicular lines through the points B and C such that they cut the lines passing through P₁, P₃ respectively at E and F.
q) With the center E draw an arc BP₂ and with center F draw an arc P₂C, thus arc BP₂C is required ogee curve.

6. Steps are given to draw involute of given circle. Arrange the steps f C is the centre of circle and P be the end of the thread (starting point).
i. Draw a line PQ, tangent to the circle and equal to the circumference of the circle.
ii. Draw the involute through the points P1, P2, P3 ……..etc.
iii. Divide PQ and the circle into 12 equal parts.
iv. Draw tangents at points 1, 2, 3 etc. and mark on them points P1, P2, P3 etc. such that 1P1 =P1l, 2P2 = P2l, 3P3= P3l etc.

7. Match the following, given are the equations of different types of spirals.

8. If the distance from a fixed point is greater than the distance from a fixed straight line then what is the value of eccentricity?

9. The plane curve generated by a point on the circumference of a circle, when it rolls on a fixed straight line without slipping is __________

10. Conical spring is also called a tapered spring.