Top 350+ Solved CAD-CAM and Automation MCQ Questions Answer
Q. The software that is used to control the computer’s work flow, organize its data andperform housekeeping functions is known as
a. operating software
b. graphics software
c. application software
d. programming software
Q. During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0the type of tool motion will be
a. circular Interpolation – clockwise
b. circular Interpolation – counter clockwise
c. linear Interpolation
d. rapid feed
Q. n an NC machining operation, the tool has to be moved from point (5, 4) to point (7, 2) alonga circular path with centre at (5, 2). Before starting the operation, the tool is at (5, 4). The G and N codes for this motion are
a. N010 GO3 X7.0 Y2.0 I5.0 J2.0
b. N010 GO2 X7.0 Y2.0 I5.0 J2.0
c. N010 GO1 X7.0 Y2.0 I5.0 J2.0
d. N010 GOO X7.0 Y2.0 I5.0 J2.0
Q. The tool of an NC machine has to move along a circular arc from (5, 5) to (10, 10) while performing an operation. The centre of the arc is at (10, 5). Which one of the following NC tool path command performs the above mentioned operation?
a. N010 GO2 X10 Y10 X5 Y5 R5
b. N010 GO3 X10 Y10 X5 Y5 R5
c. N010 GO1 X5 Y5 X10 Y10 R5
d. N010 GO2 X5 Y5 X10 Y10 R5
Q. Match the following: NC code DefinitionP. M05 1. Absolute coordinate system Q. G01 2. Dwell R. G04 3. Spindle stop S. G09 4. Linear interpolation
a. P-2, Q-3, R-4, S-1
b. P-3, Q-4, R-1, S-2
c. P-3, Q-4, R-2, S-1
d. P-4, Q-3, R-2, S-1
Q. In a CNC program block, N02 GO2 G91 X40 Z40……, GO2 and G91 refer to
a. circular interpolation in counter clockwise direction and incremental dimension
b. circular interpolation in counter clockwise direction and absolute dimension
c. circular interpolation in clockwise direction and incremental dimension
d. circular interpolation in clockwise direction and absolute dimension
Q. Numerical control
a. applies only to milling machines
b. is a method for producing exact number of parts per hour
c. is a method for controlling by means of set of instructions
d. None of the mentioned
Q. Computer will perform the data processing functions in
a. NC
b. CNC
c. DNC
d. None of the mentioned
Q. Control loop unit of M.C.U is always
a. a hardware unit
b. a software unit
c. a control unit
d. none of the mentioned
Q. The repeatability of NC machine depends on
a. control loop errors
b. mechanical errors
c. electrical errors
d. none of the mentioned
Q. Rotation of spindle is designated by one of the following axis:
a. a-axis
b. b-axis
c. c-axis
d. none of the mentioned
Q. he linking of computer with a communication system is called………..
a. networking
b. pairing
c. interlocking
d. assembling
Q. The process of putting data into a storage location is called
a. reading
b. writing
c. controlling
d. hand shaking