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WorksheetsCNC Quiz
Total questions: 10
Worksheet time: 3mins
Name
Class
Date
1.
The development of first NC machine tool project was awarded to
a)
Harvard Lab
b)
USAF
c)
MIT
d)
No of these
2.
What does CNC stands for?
a)
Computer network control
b)
Computer numerical control
c)
Computer nested control
d)
Computer numerical controller
3.
What type of motor is used to drive a CNC machining centers axis?
a)
Servo
b)
Sling
c)
Derive
d)
Pusher
4.
Changing of tool in spindle is atumoted in CNC
a)
TRUE
b)
FALSE
5.
Which of the following modes support 2.5D parts
a)
Point-to-point
b)
Point-to-point straight line
c)
2-axis contouring
d)
Drilling
6.
The running cost of CNC is higher than coventional machine
a)
TRUE
b)
FALSE
7.
Ribs in machine tool stucture are provided to attain
a)
High stiffness to weight ration
b)
Low stifness to wieght ratio
c)
High weight to stifness ratio
d)
Low weight to stifness ratio
8.
The two forces that acts on spindle during operation are
a)
Radial and lateral
b)
Axial and horizontal
c)
Lateral and horizontal
d)
Radial and axial
9.
Gray Code absolute encoder changes
a)
one bit a time
b)
two bits at a time
c)
three bits at a time
d)
four bits at a time
10.
Tacho generator is used to measure
a)
Velocity
b)
Position
c)
Time
d)
None of these
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