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WorksheetsTest on CAD CAM CAE Chapter no 4
Total questions: 15
Worksheet time: 30mins
DC Servo motors are used as drive motors in
Open loop control
Close loop control
Both
None of the above
In case of closed loop control system ___________ is used.
DC Servo motors
Stepper motors
Hydraulic actuator
None of these
The device used in NC machine tools to read a program on punched tape is called
as____________
Program scanner
Program reader
Punched tape reader
None of these
A flexible manufacturing system may contain __________
Automated m/c tool
Automated material handling system
Computer interface
All of these
The device used to read a program in NC systems is called as____________
Scanner
Flexowriter
Punched tape reader
Collator
More job variety can be well accommodated in case of
Rigid automation
Flexible automation
Continuous flow process
None of these
In NC machine tool, the motions and machine operations are controlled by
Number characters
Alpha-numeric characters
Alphabets only
None of these
In NC systems, developments, MIT stands for
Michigan Institute of Technology
Massachusetts Institute of Technology
Morocco Institute of Technology
Manipal Institute of Technology
A convex drilling machine is
Point to point NC
Straight cut NC
Contour cut NC
None of the above
A Comparator is required in
Open loop system
Closed loop system
Both a & b
None of these
Adaptive control system reduces
Machining time
Non productive time
Power output
None of these
In case of closed loop control system ____________ is used.
Servo motors
Stepper motors
DC motors
All of these
Which of the following is used as driving mechanisms in today’s CNC systems?
Servo motors
Hydraulic actuators
DC motors
All of these
A flexible manufacturing system may have __________
AGV
AS/RS
Conveyors
All of these
The width of tape used to punch NC-program is _______________
1 cm
2 cm
1 inch
2 inch
