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WorksheetsCNC quizz1
Total questions: 100
Worksheet time: 50mins
Name
Class
Date
1.
Generally CNC machines have at least a axes and operate along an XYZ plane.
a)
6
b)
3
c)
4
d)
5
2.
axis milling is useful when holes and cut-outs need to be made in the side of a piece or around a cylinder.
a)
3
b)
4
c)
5
d)
6
3.
In Generally CNC Machine X axes movement is
a)
right to left
b)
front to back
c)
uo to down
d)
180degree rotation
4.
5 axis CNC machine has rotational axes.
a)
1
b)
4
c)
3
d)
2
5.
4 axis CNC Machine has rotational axis
a)
3
b)
4
c)
1
d)
2
6.
Sculpture design work carried out in axis of the machine.
a)
4
b)
3
c)
6
d)
5
7.
Which axes of the CNC Machine is cheaper?
a)
3
b)
4
c)
5
d)
6
8.
Continuous cutting Engraving curved surfaces carried out axes of the CNC Machine
a)
3
b)
4
c)
5
d)
6
9.
The coordinate system is the fundamental system used to describe the motion of the tool and workpiece within a three-dimensional space.
a)
Polar
b)
Cartesian
c)
Array
d)
multifuncti onal
10.
To understand the Cartesian coordinate system in relation to your CNC machine is using the Rule.
a)
Left Hand
b)
Fleming
c)
Right Hand
d)
thumb
11.
In Right hand rule ,thumb represents the axis
a)
X
b)
Y
c)
Z
d)
A
12.
In Right Hand Rule,the forefinger the axis
a)
X
b)
Y
c)
Z
d)
A
13.
In Right Hand Rule,the Middle finger the axis
a)
X
b)
Y
c)
Z
d)
A
14.
The coordinate system set by machine zero taken as origin is called coordinate system.
a)
tool
b)
workpiece
c)
machine
d)
polar
15.
The coordinate system used for workpiece at machining is called coordinate system
a)
tool
b)
workpiece
c)
machine
d)
polar
16.
The three planes in the Cartesian coordinate system XY represents plane
a)
front
b)
side
c)
top
d)
bottom
17.
The three planes in the Cartesian coordinate system YZ represents plane
a)
front
b)
side
c)
top
d)
bottom
18.
The three planes in the Cartesian coordinate system XZ represents plane
a)
front
b)
side
c)
top
d)
bottom
19.
All CNC lathes are -axis coordinate system
a)
2
b)
3
c)
4
d)
5
20.
Tool length compensation menables a cnc machine to compensate for many tools of lengths
a)
same
b)
equal
c)
different
d)
decrease
21.
Tool Length Compensation (Plus) is a code to activate a command.
a)
G01
b)
G02
c)
G44
d)
G43
22.
Tool Length Compensation (Minus) is a code to activate a command.
a)
G01
b)
G02
c)
G44
d)
G43
23.
Tool Length Compensation (Cancel) is a code to activate a command.
a)
G01
b)
G49
c)
G44
d)
G43
24.
An example line of code is G43 H2 Z1. H2 indicates
a)
tool offset value
b)
workpiece offset value
c)
compensat e
d)
axes movement
25.
Tool length compensation program format to write as G43 H06
a)
X0.1
b)
Y0.1
c)
Z0.1
d)
A0.1
26.
Cutter radius compensation compensates for the of a cutting tool by causing the controller.
a)
diameter
b)
length
c)
width
d)
radius
27.
Tool radius compensation turning the Left mode ON to activate a code.
a)
G40
b)
G41
c)
G42
d)
G49
28.
Tool radius compensation turning the Right mode ON to activate a code.
a)
G40
b)
G41
c)
G42
d)
G49
29.
Tool radius compensationCancellation mode to activate a code.
a)
G40
b)
G41
c)
G42
d)
G49
30.
If the G41 programmed cutter path needs to mill cutting, and it's a standard right handed tool.
a)
convention al
b)
sideways
c)
guideways
d)
climb
31.
If the G42 programmed cutter path needs to mill cutting, and it's a standard right handed tool.
a)
convention al
b)
sideways
c)
guideways
d)
climb
32.
The program format for G00/G01 G41/G42 D X Y F_ so D indicates
a)
offset value
b)
program path
c)
tool number
d)
feed
33.
The program format for G00/G01 G41/G42 D X Y F_ so F indicates
a)
offset value
b)
program path
c)
tool number
d)
feed
34.
Preparatory function is represented by code with the number behind it, which defines the meaning of the block that contains it
a)
M
b)
S
c)
G
d)
F
35.
This combination of letters and numerical values in order to perform a specific machining operation is called as Code.
a)
M
b)
S
c)
F
d)
G
36.
In CNC Programming,Linear interpolation command activates a code
a)
G00
b)
G01
c)
G02
d)
G03
37.
In CNC Programming,Circular interpolation clockwise command activates a code
a)
G00
b)
G01
c)
G02
d)
G03
38.
In CNC Programming,Circular interpolation counter clockwise command activates a code
a)
G00
b)
G01
c)
G02
d)
G03
39.
In CNC Programming,Metric input command activates a code
a)
G17
b)
G18
c)
G20
d)
G21
40.
In CNC Programming,Workpiece coordinates command system 1 activates a code
a)
G54
b)
G21
c)
G43
d)
G80
41.
In CNC Programming,Drilling cycle activates a code
a)
G80
b)
G81
c)
G82
d)
G83
42.
In CNC Programming,Peck Drilling cycle activates a code
a)
G80
b)
G81
c)
G82
d)
G83
43.
In CNC Programming,Boring cycle activates a code
a)
G85
b)
G81
c)
G82
d)
G83
44.
In CNC Programming,Absolute positioning command activates a code
a)
G85
b)
G90
c)
G82
d)
G83
45.
In CNC Programming,Increemental positioning command activates a code
a)
G85
b)
G90
c)
G91
d)
G83
46.
In CNC Programming,feed per minute command activates a code
a)
G85
b)
G90
c)
G94
d)
G95
47.
In CNC Programming,feed per revolution command activates a code
a)
G85
b)
G90
c)
G94
d)
G95
48.
In CNC Programming,Return to pointR Level in canned cycle command activates a _________code.
a)
G98
b)
G99
c)
G94
d)
G95
49.
In CNC Programming,Return to initial point in canned cycle command activates a _________ code.
a)
G98
b)
G99
c)
G94
d)
G95
50.
In CNC Programming,Spindle rotation clockwise command activates a __________ code.
a)
M02
b)
M03
c)
M04
d)
M05
51.
In CNC Programming,Spindle rotation counter clockwise command activates a _________ code.
a)
M02
b)
M03
c)
M04
d)
M05
52.
In CNC Programming,Spindle rotation off command activates a code.
a)
M02
b)
M03
c)
M04
d)
M05
53.
In CNC Programming,tool change command activates a code.
a)
M06
b)
M03
c)
M04
d)
M05
54.
In CNC Programming,flood coolant command activates a code.
a)
M06
b)
M07
c)
M08
d)
M09
55.
In CNC Programming,mist coolant command activates a code.
a)
M06
b)
M07
c)
M08
d)
M09
56.
In CNC Programming,coolant off command activates a code.
a)
M06
b)
M07
c)
M08
d)
M09
57.
In CNC Programming,coolant off command activates a code.
a)
M06
b)
M07
c)
M08
d)
M09
58.
In CNC Programming,Program End command activates a code.
a)
M06
b)
M07
c)
M31
d)
M30
59.
In CNC Programming,Turning cycle command activates a code.
a)
G71
b)
G72
c)
G73
d)
G74
60.
In CNC Programming,Facing cycle command activates a code.
a)
G71
b)
G72
c)
G73
d)
G74
61.
In CNC Programming,Constant surface speed control command activates a code.
a)
G90
b)
G91
c)
G96
d)
G97
62.
In CNC Programming,Finishing cycle command activates a code.
a)
G71
b)
G72
c)
G73
d)
G70
63.
In CNC Programming,Finishing cycle command activates a code.
a)
G71
b)
G72
c)
G73
d)
G70
64.
In CNC Programming,Sub program call command activates a code.
a)
M68
b)
M70
c)
M98
d)
M99
65.
In CNC Programming,Sub program END command activates a code.
a)
M68
b)
M70
c)
M98
d)
M99
66.
In CNC Programming,Program Number represents letter is used
a)
A
b)
N
c)
O
d)
S
67.
In CNC Programming,Sequence Number represents letter is used
a)
A
b)
N
c)
O
d)
S
68.
In CNC Programming,Word consists of and data.
a)
block
b)
program path
c)
address
d)
sequence
69.
A cnc program is normally written as N50 G01 X100 Y-50.02 F100 S1200
a)
block
b)
program path
c)
address
d)
sequence
70.
Program format for Gcode G81 X_Y_Z_R_ _.which letter is missing in the format?
a)
S
b)
P
c)
A
d)
F
71.
Program format for Gcode G43 _ Z_ M08.which letter is missing in the format?
a)
S
b)
H
c)
A
d)
F
72.
In the CNC Milling program N10 G00 G90 X70 Y25 Z1 S800 M3. What is X & Y ?
a)
polar coordinates
b)
Cartesian coordinates
c)
Array
d)
structure
73.
In the CNC Turning program G00 X0 Z0 M03 S600. What is X indicates?
a)
length
b)
width
c)
diameter
d)
thickness
74.
In the CNC Turning program G00 X0 Z0 M03 S600. What is Z indicates?
a)
length
b)
width
c)
diameter
d)
thickness
75.
It helps extend tool life and provide an improved surface finish of the parts being machined is used for .
a)
coolant
b)
grease
c)
water
d)
compressed air
76.
If the machine coolant fails to control the created by deformation, one or both contact surfaces is eroded.
a)
machine
b)
friction
c)
wedge
d)
mechanism
77.
is a good conductor of heat but has drawbacks as a cutting fluid.
a)
oil
b)
grease
c)
air
d)
water
78.
In the CNC Machine,Coolant collects in a sump at the of the machine.
a)
front
b)
top
c)
bottom
d)
side
79.
The most common problem in the coolant is a level of concentration.
a)
high
b)
low
c)
medium
d)
none
80.
Machine coolant concentrations can change every day from evaporation, splashing, misting, and dragout
a)
4% to 5%
b)
5% to 10%
c)
5% to 20%
d)
10% to 20%
81.
In Grinding operations, used for coolants to get a -surface finish
a)
bad
b)
better
c)
low level
d)
point level
82.
When an alarm is issued, “ALARM” is displayed at __________.
a)
Right Side of the LCD
b)
Left Side of the LCD
c)
bottom line of the
LCD
d)
None of the Above
83.
Alarms are the integrated parts of
a)
Controller
b)
motor
c)
driver
d)
All of the Above
84.
How many modes of CNC Alarm?
a)
2
b)
4
c)
3
d)
5
85.
A parameter which requires the power off was input, turn off power.
a)
4
b)
1
c)
2
d)
3
86.
An unusable G code or G code corresponding to the function not provided is specified. Modify the program.
a)
1
b)
2
c)
10
d)
11
87.
Megger is also called……………….
a)
Digital millimeter
b)
Insulation tester
c)
Allen Keys
d)
spanner
88.
……………….. Is using for clamping the dial indicators while checking out of roundness of run of spindle.
a)
Insulation tester
b)
Digital millimeter
c)
Standard adapters
d)
Allen Keys
89.
What is the expansion of EMI
a)
Electical maxium input
b)
Electro Magnetic Interferenc e
c)
Electrical magnetic input
d)
Electronics magnetic index
90.
MDI Full form is a
a)
Machine data input
b)
Manual data input
c)
machine dot interface
d)
manual dot interface
91.
__________ is a process of converting raw material into finished products.
a)
Production
b)
Numerical control
c)
Numerical control
d)
Feedback system
92.
__________ can be defined as a system in which actions of a machine tool are controlled by recorded information.
a)
Production
b)
Numerical control
c)
Numerical control
d)
Feedback system
93.
Data is sent to the machine tool by means of punch cards or tapes in __________ l.
a)
Production
b)
Numerical control
c)
Numerical control
d)
Feedback system
94.
CNC stands for __________
a)
Computer Numerical Control
b)
Numerical Control
c)
CN Control
d)
Computer NC
95.
The cutting operations performed by the CNC is called __________
a)
NC machining
b)
CNC machining
c)
HNC machining
d)
LATHE machining
96.
__________ which are used to input the part program in the CNC machine.
a)
Input devices
b)
Output devices
c)
Output
d)
Input
97.
Punch tape reader, magnetic tape reader and computer via RS-232-C communication are __________
a)
Input devices
b)
Output devices
c)
Output
d)
Input
98.
__________ is the heart of the CNC machine.
a)
Machineing Control Unit
b)
Manual Control Unit
c)
Machine Control Unit
d)
Method Control Unit
99.
__________ is used for coded and decodes the instruction.
a)
Machineing Control Unit
b)
Manual Control Unit
c)
Machine Control Unit .
d)
Method Control Unit
100.
__________ is controlled in X and Y axis direction and __________ is controlled in the Z axis direction.
a)
The machine table & the spindle .
b)
The table & the spindle
c)
The machine & the spindle
d)
The machine table
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