Engineering Drawing & Computer Graphics | Week 3 Solution | Mechanical Engineering | Swayam Course | Sept 2020
Swayam
Mechanical Engineering
1.
The sections obtained by the intersection of
right circular cone by a plane in different position relative to the axis of
the cone is known as a
(a)
Frustum of a cone
(b)
Regular cone
(c)
Conic section
(d)
Circular section
Accepted Answers: (c)
Conic section
2.
When the plane cuts the cone at an angle
parallel to the axis of the cone, then _________ is formed
(a)
Parabola
(b)
Hyperbola
(c)
Ellipse
(d)
Spheroid
Accepted Answers: (b) Hyperbola
3.
If the distance from the focus is 10 units and
the distance from the directrix is 30 units, then what is the eccentricity?
(a)
0.3333
(b)
0.8333
(c)
3.0
(d)
0.0333
Accepted Answers: (a) 0.3333
4.
Out of the following, which method is incorrect
in the context of methods of construction of parabolas
(a)
Trapezoidal method
(b)
Rectangle method
(c)
Tangent method
(d)
Focus Directrix method
Accepted Answers: (a) Trapezoidal method
5.
While drawing a cycloid, the number of divisions
made on the generating circle has to be ______number of divisions made on the
tangent drawn from the generating point.
(a)
less than the
(b)
double of the
(c)
exactly half of the
(d)
equal to the
Accepted Answers: (d) equal to the
6.
Which of the following steps of construction is
incorrect, while using the tangent method for construction of parabola?
(a)
Draw the base and axis
(b)
Extend the axis so that the eccentricity is equal to one
(c)
Join the point outside the parabola to the endpoints of the base
(d)
Mark equal divisions on both the tangents and join them such that the joined
lines are parallel to one another
Accepted Answers: (d) Mark equal divisions on both the
tangents and join them such that the joined lines are parallel to one another
7.
A cycloidal curve is generated when -
(a)
When a moving point lying on the circumference of the circle
rolls without slipping on a circle or a straight line
(b)
When a moving point lying on the circumference of the circle
rolls with slipping on a circle or a straight line
(c)
When a fixed point lying on the circumference of the circle
rolls without slipping on a circle or a straight line
(d)
When a fixed point lying on the circumference of the circle
rolls with slipping on a cylinder
8.
Which of the following curve is being used in
tooth profile of gears-
(a)
Involute
(b)
Parabola
(c)
cycloid
(d)
Both a and c
Accepted Answers: (d) Both a and c
9.
The curve traced out by a point moving in such a
way that its movement towards or away from the pole is uniform with the
increase in the vectorial angle from the starting line is known as
(a)
Trochoid
(b)
Involute
(c)
Cycloid
(d)
Spiral
Accepted Answers:(d) Spiral
10.
If length and breadth of a rectangle is known,
then considering the rectangle method for construction of parabola which of the
following parameters is known-
(a)
Base and axis of the parabola
(b)
Length of the tangent to the parabola
(c)
Length of the normal to the parabola
(d)
Distance between the focus and the directrix.
11.
While drawing a cycloidal curve if the diameter
of the generating circle is 28cm, then the length of the tangent drawn from the
generating point to reach the same position on the rolling circle (in cm) is
(a)
44cm
(b)
33cm
(c)
88cm
(d)
110cm
Accepted Answers: (c) 88cm
12.
A hyperbola has to be constructed using
Focus-Directrix method. If the distance between Focus and directrix is 49cm and
the eccentricity has been given as 4/3.Then the number of divisions of the
given distance and measurement of each division is-
(a)
7 and 7
(b)
7 and 9
(c)
14 and 7
(d)
14 and 9
Accepted Answers: (a) 7 and 7
13.
In a _______ the product of the distances of any
point on it from two fixed lines at right angles to each other is always
constant. The fixed lines are called _______·
(a)
Hyperbola, asymptotes
(b)
parabola, asymptotes
(c)
hyperbola, directrix
(d)
parabola, directrix
Accepted Answers: (a) Hyperbola, asymptotes
14.
If the radius of the right circular cone is 10cm
and height is also 10cm. Then to draw a conical helix which of the following
step of construction is not required-
(a)
Drawing a circle of diameter 10cm.
(b)
Drawing a cylinder of height equal to that of cone.
(c)
Front view of a right circular cone
(d)
Dividing circle and triangle in equal number of parts
Accepted Answers: (b) Drawing a cylinder of height equal
to that of cone.
15.
The sum of the focal distance of any point on an
________ is constant and equal to the length of the - _______.
(a)
Ellipse, minor axis
(b)
Hyperbola, minor axis
(c)
Ellipse, Major axis
(d)
Hyperbola, Major axis
Accepted Answers: (c) Ellipse, Major axis
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