ENGINEERING MECHANICS
In order to double the period of simple pendulum, the length of the string should be
quadrupled
Perpendiculars can’t be drawn using
pro- circle
How many types of CAD are there?
5
CAD/CAM is the relationship between
design and manufacturing
A simple mechanical arm is an example of which generation of robots?
First generation
The unit of angular acceleration is
rad / s2
A Ogee curve is a
continuous double curve with convex and concave
Modem CAD systems are based on:
ICG
The process in which the detailed specifications materials, dimensions, tolerances and surface rough is made is known as
implementation process
Who coined the word “Robotics”?
Issac Asimov
The loss of kinetic energy due to direct impact of two bodies
depends
How many pairs of parallel lines are there in regular Hexagon?
0
The computer communicates with the user via:
CRT
Which two disciplines are tied by a common database?
CAD and CAM
Which generation robots have sensing devices to exhibit path-control capabilities but lack artificial intelligence?
Second generation
If a given force (or a given system of forces) acting on a body
Does not change
How many external tangents are there for two circles?
2
The process of designing consists of __________ identifiable steps.
6
The term that is used for geometric modelling like solid modelling, wire frame modelling and drafting is known as
software package
Which generation robots are repeating, non-servo, pick-and-place, or point-to-point kind?
First generation
In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is
100
There are 2 circles say A, B. A has 20 units radius and B has 10 units radius and distance from centers of A and B is 40 units. Where will be the intersection point of external tangents?
to the right of the two circles
The functionality areas of CAD application can be grouped into __________ categories.
4
The system environment in a mainframe computer consists of
both central processing and storage devices
When was the first numerically controlled machine tool developed?
1952