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CNC Programming Quiz 4

Total questions: 60

Worksheet time: 30mins

Name
Class
Date
1.

In a 3 axis VMC for the selection of XY Plane ________ code is used

a)

G21

b)

G18

c)

G20

d)

G17

2.

In a 3 Axis VMC for the selection of YZ plane ______ code is used

a)

G19

b)

G17

c)

G18

d)

None

3.

________ preparatory function is used for tool length compensation positive direction

a)

G42

b)

G43

c)

G44

d)

None

4.

______ Preparatory function is related to Work Zero

a)

G54

b)

G55

c)

G56

d)

All the Above

5.

Work Zero is not in built in the controller and it can be changed

a)

True

b)

False

c)

Neither true nor False

d)

None

6.

In part programming the symbol “;” explains __________

a)

program End

b)

End of block

c)

Optional end

d)

Request end

7.

G91 G28 X0 Y0 Z0 in this the preparatory function G28 describes

a)

Return to work zero

b)

Return to previous point

c)

Return to Machine Zero

d)

Input in mm

8.

Explains about G90 G00 G55 X40 Y 30 S4000 M03 in this part programming block G55

a)

Machine Datum

b)

Work datum

c)

Tool shank datum

d)

None

9.

Secondary Motion parallel to X axis dimension can be designated as _____ letter.

a)

V

b)

U

c)

W

d)

None

10.

Secondary motion dimension parallel to Y Axis can be designated as ______ letter.

a)

V

b)

U

c)

w

d)

None

11.

Secondary motion dimension parallel to Z Axis can be designated as _______ letter.

a)

U

b)

V

c)

W

d)

None

12.

In part programming the letter “O” explains

a)

Reference

b)

Rewind

c)

Reference rewind and Stop

d)

None

13.

Work zero of the CNC job is called Floating Datum

a)

True

b)

False

c)

Neither True nor False

d)

None

14.

The detailed plan of manufacturing and Machining instructions is called _________

a)

Modular Tooling

b)

Part Programme

c)

Support Systems

d)

None

15.

______ Miscellaneous function is used for coolant off

a)

M08

b)

M06

c)

M09

d)

M10

16.

______ Miscellaneous function is used for coolant on

a)

M08

b)

M09

c)

M12

d)

M04

17.

The preparatory function for Feed per Minute is _____

a)

G90

b)

G91

c)

G94

d)

G96

18.

The preparatory function for Feed per Revolution is_____

a)

G95

b)

G76

c)

M95

d)

G97

19.

In the CNC program “A” letter used _______

a)

To specify angle

b)

To specify tool function

c)

To specify cutter direction

d)

None of the above

20.

In the CNC program letter “ R” is used to specify ______

a)

Radius of arc,

b)

Retraction amount.

c)

Both a & b

d)

None of the above

21.

G00 X 70 Z-10 In this block, which is called as DATA.

a)

00 70 -10

b)

G X Z

c)

G00 X 70 Z-10

d)

None of the above

22.

In the ________ system co-ordinates of any points are calculated with reference to previous point.

a)

Absolute co-ordinate system

b)

Incremental co-ordinate system

c)

User co-ordinate system

d)

None of the above

23.

Preparatory function used for tool length compensation “-“ direction

a)

G41

b)

G42

c)

G43

d)

G44

24.

G 31 Code stands for _______.

a)

Skip Function

b)

Thread cutting

c)

Automatic tool length measurement

d)

Tool offset - increase

25.

Which of the following preparatory code is used for cutter radius compensation cancel .

a)

G 41

b)

G 42

c)

G 40

d)

None

26.

G 83 Cycle is used for________.

a)

Tapping

b)

Boring

c)

Drilling

d)

Peck Drilling

27.

G 18 Code is for ________.

a)

XY Plane Selection

b)

YZ Plane Selection

c)

ZX Plane Selection

d)

XYZ Plane Selection

28.

G 19 Command is for _________.

a)

XY Plane Selection

b)

YZ Plane Selection

c)

ZX Plane Selection

d)

XYZ Plane Selection

29.

G 17 Command is for ______.

a)

XY Plane Selection

b)

YZ Plane Selection

c)

ZX Plane Selection

d)

XYZ Plane Selection

30.

G04 command is used for ________

a)

Exact stop, Dwell

b)

Spindle Stop

c)

Spindle ON

d)

None

31.

X Axis distance from the start point to the centre of an arc is given as ____.

a)

R

b)

I

c)

J

d)

K

32.

Y Axis distance from the start point to the centre of an arc is given as ______.

a)

R

b)

I

c)

J

d)

K

33.

Z Axis distance from the start point to the centre of an arc is given as _____.

a)

R

b)

I

c)

J

d)

K

34.

The preparatory code G 30 is used to mention ______.

a)

Skip Function

b)

Thread cutting

c)

Tool offset Increase

d)

2 nd , 3 rd , 4 th reference position return

35.

How many types of work piece Co ordinate system ________

a)

2

b)

3

c)

4

d)

6

36.

D and H terms are used as parameters of __________

a)

Canned Cycle

b)

Dwell Time

c)

Offset numbers

d)

None

37.

P and X terms are used as parameters of ________.

a)

Canned Cycle

b)

Dwell Time

c)

Offset numbers

d)

None

38.

P and Q terms are used as parameters of __________.

a)

Canned Cycle

b)

Dwell Time

c)

Offset numbers

d)

none

39.

Give the value of End Point in Incremental Mode.

a)

X 40 Y 70

b)

X 60 Y -40

c)

X 60 Y 40

d)

X-60 Y40.0

40.

Give the value of End Point in Absolute Mode

a)

X- 40.0 Y 70.0

b)

X- 60.0 Y-40.0

c)

X 40.0 Y 70.0

d)

X 60.0 Y 40.0

41.

Rotary axis rotation along X axis is specified by _______.

a)

D

b)

C

c)

B

d)

A

42.

Rotary axis rotation along Y axis is specified by _______.

a)

D

b)

C

c)

B

d)

A

43.

Rotary axis rotation along Z axis is specified by _______.

a)

D

b)

C

c)

B

d)

A

44.

Parallel axis to X axis is denoted by _________.

a)

U

b)

V

c)

W

d)

X

45.

Parallel axis to Y axis is denoted by _________.

a)

U

b)

V

c)

W

d)

X

46.

Parallel axis to Z axis is denoted by _________.

a)

U

b)

V

c)

W

d)

X

47.

Preparatory code is used to travel from Point 1 to 2

a)

GO1

b)

G02

c)

G03

d)

None

48.

What Preparatory code is used to travel from Point 1 to 2?

a)

GO1

b)

G02

c)

G03

d)

None

49.

In Peck drilling cycle, the term Q denotes _______.

a)

Safe Height / R point

b)

Number of repeats

c)

Final depth

d)

Depth of cut for each cutting feed.

50.

In G 82 cycle, the term P denotes _________.

a)

Number of repeats

b)

Dwell time at the bottom of a hole

c)

Safe height / R point

d)

Final depth

51.

For drilling operation, which of the following cutter radius compensation is used ____

a)

G 41

b)

G 42

c)

Either G 41 or G 42

d)

None

52.

For this profile, _________ cutter radius compensation is used

a)

G 41

b)

G42

c)

Either G 41 or G 42

d)

none

53.

For this profile, _________ cutter radius compensation is used

a)

G 41

b)

G42

c)

Either G 41 or G 42

d)

none

54.

For this profile, which of the following block is suitable?

a)

G02 R 250

b)

G02 R -250

c)

G03 R 250

d)

G03 R -250

55.

The command G 44 is used for _________

a)

CRC Left

b)

CRC Right

c)

Tool length Compensation +ve Direction

d)

Tool Length Compensation -ve Direction

56.

For this profile, __________ cutter radius compensation is used.

a)

G 41

b)

G 42

c)

Either A or B

d)

none

57.

For this profile __________ cutter radius compensation is used.

a)

G 41

b)

G 42

c)

Either A or B

d)

None

58.

In this block G00 X 100.0 Y 20.0, G represents ________.

a)

Block

b)

Word

c)

Address

d)

Data

59.

In this block G00 X 100.0, 100 represent ________.

a)

Block

b)

Word

c)

Address

d)

Data

60.

In this block G00 X 100.0 Y 20.0, G00 represents ________.

a)

Block

b)

Word

c)

Address

d)

Data

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