Practice Test: Question Set - 01
1. Which one of the following statements refers to contouring control?
- (A) This
system can provide feed control in three axes
- (B) This
system provides only one feed axis
- (C) This system
provides motion in two axes (But not simultaneously)
- (D) This
does not provide any feed axis
2. On which unit is the tool setting done on NC machine?
- (A) On
special device away from the machine
- (B) On
machine itself while the other operations are being performed
- (C) On
the NC machine during idle time
- (D) On
the pre-setting setting
3. Command G00 means
- (A) Feed
motion in circular path
- (B) Rapid
motion
- (C) Feed
motion in straight line
- (D) Slow
motion
4. A CNC lathe is programmed and set to turn a diameter of 50 mm, but on trial run the diameter is found to be 50.1 mm. Which one of the following will ensure correct diameter during production?
- (A) Increase
the tool offset by 0.1 mm
- (B) Decrease
the tool offset by 0.1 mm
- (C) Increase
the tool offset by 0.05 mm
- (D) Decrease
the tool offset by 0.05 mm
5. CNC machines are not normally operated. They are controlled by means of a:
- (A) Programme
- (B) Operator
- (C) Cam
- (D) Plug
board system
6. The point-to-point is the simplest form of NC. The operation done in this system is:
- (A) Drilling
- (B) Boring
- (C) Straight
line milling
- (D) Any
one of the above
7. Which one of the following statements about programming of NC machine is correct?
- (A) Programming
is only possible on central server
- (B) Programming
can be entered on control panel and can be read from a tape
- (C) Modification
of the programme on the control panel is not possible
- (D) Entering
the programme is only possible directly on the control panel
8. Which one of the following is NOT the advantage of CNC machine?
- (A) Reduces
inspection time
- (B) Reduces
tooling time
- (C) Higher
initial cost
- (D) Higher
rate of production
9. Which one of the following statements refers to block structure?
- (A) It
refers to the rule for writing programme block
- (B) It
can be done by keyboard system on the CNC machine
- (C) It
is electrical control fixed on CNC machine
- (D) The
measuring system is calibrated for this point
10. A point-to-point control system is suitable only for one of the following applications. Select it.
- (A) Milling
profile
- (B) Turning
- (C) Drilling
- (D) Grinding
11. Which one of the following is the command for feed motion in straight line ?
- (A) G00
- (B) G01
- (C) G02
- (D) None of the
above
12. CNC lathe machines have built-in coordinate measuring system. The zero position on the co-ordinate system is called:
- (A) Reference
point
- (B) Machine
zero point
- (C) Work
zero point
- (D) Programme
zero point