Rajasthan Polytechnic Third Year Paper 2016 – CNC Machines & Automation

Rajasthan Polytechnic Third Year Paper 2016 – CNC Machines & Automation

Axis parallel to spindle of a CNC machine is
(a) Z-axis
(b) Y-axis
(c) X-axis
(d) A-axis

What is the use of MO2 miscellaneous function in CNC machine?
(a) Tool change
(b) Collant on
(c) Coolant off
(d) End of programme

Which feedback device is used for spindle speed measurement in CNC lathe ?
(a) Proximity switch
(b) Technogenerator
(c) Absolute encoder
(d) Resolver

What does word CNC signify?
(a) Certified Numerical Calculations
(b) Composite Numerical Countours
(c) Computer Numerical Control
(d) Computer NUmber Command

The rate at which cutting tool moves in relation to workpiece is called
(a) RPM
(b) Cutting capacity
(c) Feed rate
(d) Feedback

Which of the following is used as input medium in CNC machines?
(a) Magnetic tape
(b) Floppy Disk
(c) Paper tape
(d) All of the above

A manufacturing system in which number of NC machines are controlled by a cetralised computer is called
(a) NC system
(b) CNC system
(c) DNC system
(d) FMS system

Process planning, part programming, tape preparation, tape verification and production are steps of which manufacturing system?
(a) Numerical control procedure
(b) EIA coding system
(c) Flexible manufacturing system
(d) Group technology

Decimal equivalent of a binary number 110111010 is
(a) 243
(b) 443
(c) 442
(d) 343

A sophisticated CNC machine that can perform multiple machining operations at the same location with a varity of tools is called
(a) CNC milling machine
(b) CNC lathe machine
(c) CNC drilling machine
(d) CNC machining centre