My Report

Engineering Drawing Practice Test 4


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
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1. 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.

2. Two circles of radius R and r, where the circle with radius r having a fixed point roll outside the circle with radius R along its circumference forming epicycloid. What is the equation of epicycloid in X(θ)?

3. ‘Hypo’ as prefix to cycloids give that the generating circle is inside the directing circle.

4. A Spring is made of wire whose cross-section is a square of 15 mm side. Inner diameter of spring is 60 mm then outer diameter will be _________

5. How the angle ᴓ θ is obtained of epicycloid and hypocycloid?

6. The cross-section is a _________ when a plane is inclined to the axis and cuts all the generators of a regular cone.

7. Steps are given to draw the evolute of a hypocycloid. Arrange the steps.
i. Draw the diameter PQ of the rolling circle. Join Q with O, the centre of the directing circle.
ii. Mark a number of points on the hypocycloid and similarly, obtain centres of curvature at these points. The curve drawn through these centres is the evolute of the hypocycloid.
iii. Produce PN to cut OQ- produced at Op, which is the centre of curvature at the point P.
iv. Mark a point P on the hypocycloid and draw the normal PN to it.

8. Steps are given to determine the centre of curvature at a given point on a hyperbola. Arrange the steps. Let P be the given point on the conic, V is vertex and F and F1 are the foci.
i. Draw a line GO parallel to HF and cutting the axis at O.
ii. Draw a line F1G inclined to the axis and equal to FV1.
iii. Then O is the centre of curvature at the vertex V.
iv. On F1G, mark a point H such that HG = VF. Join H with F.

9. In an ellipse, the line joining the foci is called ________ and its midpoint is the center of the curve.

10. Two circles of radius R and r, where the circle with radius r having a fixed point roll inside the circle with radius R along its circumference forming hypocycloid. What is the equation of epicycloid in Y(θ)?


 

Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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