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CNC Machine Tool Quiz-02

Total questions: 85

Worksheet time: 43mins

Name
Class
Date
1.

NC machine Uses _________ to feed the Program

a)

Punched Tape

b)

Computer

c)

Both A & B

d)

NONE OF THE ABOVE

2.

In _________ control The machining operations are performed at specific points and there is no machining while the machine table slides from one point

a)

contour

b)

Straight cut

c)

Point to point

d)

macro

3.

A device that acts as an interchangeable interface between a machine tool spindle and a cutting tool is

a)

Tool holder

b)

work holder

c)

Both A & B

d)

none

4.

DC servomotors are high performance motors and are useful as prime movers in _________ machine tools

a)

NC

b)

CCNA

c)

Tool offset Increase

d)

CNC

5.

Tungsten in HSS provides ________

a)

Hot hardness & form stability

b)

Keeness of the cutting edge

c)

More wear resistance

d)

All the above

6.

The abbreviation PVD stands for ____________

a)

Physical vapour deposition

b)

Physical value deposition

c)

Physical various deposit

d)

NONE OF THE ABOVE

7.

Commonly used cutting tool material for conventional machine is __________

a)

HSS

b)

Carbide

c)

Diamond

d)

NONE OF THE ABOVE

8.

In this block G00 X 100.0 , 100 represents ________

a)

Block

b)

Word

c)

Address

d)

Data

9.

M07 is the command for _________

a)

Switch on coolant

b)

switch off coolant

c)

stop the spindle rotation

d)

NONE OF THE ABOVE

10.

The Z axis is along the ___________axis

a)

Spindle

b)

X-axis

c)

cutter axis

d)

NONE OF THE ABOVE

11.

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

a)

Block

b)

Word

c)

Address

d)

Data

12.

In Polar Co ordinate system Y specifies _______

a)

Angle inclined

b)

Distance

c)

Radius

d)

None

13.

Which of the following code is sub program call _______

a)

M 98

b)

M 99

c)

G 98

d)

G 99

14.

M01 command is used for _________

a)

Optional stop

b)

Temperory stop

c)

main stop

d)

NONE OF THE ABOVE

15.

G 17 Command is for ______

a)

XY Plane Selection

b)

YZ Plane Selection

c)

ZX Plane Selection

d)

XYZ Plane Selection

16.

Spind stop command can be executed by _______

a)

M04

b)

M05

c)

M06

d)

M07

17.

G 16 code is used for ___________

a)

XY Plane Selection

b)

Programmable data input

c)

Exact Stop

d)

Polar Co Ordinate command

18.

In the programming letter O is used to specify _______

a)

Program number

b)

Feed function

c)

Speed function

d)

Tool function

19.

The symbol for skip function is ___________

a)

( )

b)

%

c)

#

d)

/

20.

A set of Operations which is repeated regularly in the same sequence _________

a)

Cycle

b)

Contour

c)

Offset

d)

dwell

21.

G21 preparatory function used for ________

a)

Inch input

b)

Metric input

c)

MKS input

d)

Polar input

22.

In the program letter “F” is used for_______

a)

Program number

b)

Feed function

c)

Speed function

d)

Tool function

23.

Miscellaneous function is used for sub program cancel is __________

a)

M99

b)

M98

c)

M82

d)

M83

24.

______datum used for writing part program.

a)

Work

b)

Tool

c)

Machine

d)

Work shift

25.

Which of the following functions cant be done in NC machine

a)

punching program

b)

Executing program

c)

Both A & B

d)

Sub programming.

26.

Step turning is an example of ______________ control system

a)

Straight cut

b)

Contouring system

c)

Both A & B

d)

point

27.

The slides and spindle of the CNC machine are driven by __________

a)

stepper motor

b)

ac motor

c)

pole motor

d)

None

28.

The design of slide way in a CNC machine tools should

a)

Reduce friction

b)

Reduce wear

c)

improve smoothness of the drive.

d)

All of the above

29.

The hardest cutting tool material is ________

a)

Carbide

b)

Coated carbide

c)

Diamond

d)

Cermets

30.

The abbreviation HSS stands for _____________

a)

High speed scale

b)

high speed steel

c)

high surface speed

d)

NONE OF THE ABOVE

31.

Stellite is composed of Cobalt, Chromium & ___________

a)

Titanium

b)

Molybdenum

c)

Tungsten

d)

Carbon

32.

Sequence number is specified for _________

a)

All blocks

b)

Only for desired block of the program

c)

Both A & B

d)

None

33.

In Polar Co ordinate system Y specifies _______

a)

Angle inclined

b)

Distance

c)

Radius

d)

None

34.

G 85 canned cycle is for ______

a)

Peck Drilling

b)

Tapping

c)

Reaming

d)

None

35.

In this block G00 X 100.0 , 100 represents ________

a)

Block

b)

Word

c)

Address

d)

Data

36.

MPG stands for ________

a)

Manual Power Generator

b)

Manual Plse Generator

c)

Machine Pulse Generator

d)

Manual Program Generator

37.

The term D denotes ________ offset number

a)

CRC

b)

Tool length offset number

c)

Wear parameter

d)

none

38.

Spindle rotation clockwise code is ____________

a)

M03

b)

M04

c)

M05

d)

MO6

39.

Spind stop command can be executed by _______

a)

M04

b)

M05

c)

M06

d)

M07

40.

D and H terms are used as parameters of __________

a)

Canned Cycle

b)

Dwell Time

c)

Offset numbers

d)

None

41.

Insert wear compensation can be given in ______

a)

work offset

b)

tool offset

c)

work shift

d)

Machine datum

42.

To set the maximum spindle speed in CNC lathe ______ preparatory function is used

a)

G50

b)

G80

c)

G90

d)

G60

43.

G21 preparatory function used for ________

a)

Inch input

b)

Metric input

c)

MKS input

d)

Polar input

44.

For stock removal in turning _________preparatory code will be used.

a)

G71

b)

G72

c)

G73

d)

G70

45.

In the programming letter O is used to specify _______

a)

Program number

b)

Feed function

c)

Speed function

d)

Tool function

46.

Abbreviation of NC stands for __________

a)

NO CONTROL

b)

NUMERICAL CONTROL

c)

NOT CONTROL

d)

NEED TO CONTROL

47.

Transducer is a ___________ device

a)

feed back device

b)

open loop device

c)

mechanical device

d)

positive device

48.

In the _______ slide ways, air or oil is pumped into small pockets or cavities machined into the carriage or slides which are in contact with the slide way.

a)

Hydrostatic

b)

aerostatic

c)

hydrodynamic

d)

kinematics

49.

which of the following are work holding devices.

a)

clamps

b)

Vises

c)

Either A or B

d)

both a and b

50.

Stellite is composed of Cobalt, Chromium & ___________

a)

Titanium

b)

Molybdenum

c)

Tungsten

d)

Carbon

51.

Tungsten in HSS provides ________

a)

Hot hardness & form stability

b)

Keeness of the cutting edge

c)

More wear resistance

d)

All the above

52.

The Z axis is along the ___________axis

a)

Spindle

b)

X-axis

c)

cutter axis

d)

NONE OF THE ABOVE

53.

G21 Stands for ________

a)

Input in Metric

b)

Input in Inch

c)

Input in Polar Co ordinate

d)

None

54.

Sequence number is specified for _________

a)

All blocks

b)

Only for desired block of the program

c)

Both A & B

d)

None

55.

P and Q terms are used as parameters of __________

a)

Canned Cycle

b)

Dwell Time

c)

Offset numbers

d)

none

56.

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

57.

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

58.

M07 is the command for _________

a)

Switch on coolant

b)

switch off coolant

c)

stop the spindle rotation

d)

NONE OF THE ABOVE

59.

MPG stands for ________

a)

Manual Power Generator

b)

Manual Pulse Generator

c)

Machine Pulse Generator

d)

Manual Program Generator

60.

Program end & Rewind can be performed by using the function_______

a)

M30

b)

M05

c)

M06

d)

M09

61.

_________ miscellaneous function used for tool change

a)

M04

b)

M06

c)

M07

d)

M08

62.

The G code G72 in lathe Programming stands for___________

a)

Facing Cycle

b)

Single turning

c)

Single threading

d)

Turning Cycle

63.

______datum used for writing part program.

a)

Work

b)

Tool

c)

Machine

d)

Work shift

64.

___________ preparatory function used for Grooving cycle on X axis.

a)

G74

b)

G75

c)

G76

d)

G73

65.

The G code using for constant Surface speed command is___________

a)

G97

b)

G96

c)

G95

d)

G94

66.

_________ code used for multiple threading cycles

a)

G76

b)

G74

c)

G73

d)

G71

67.

_________ Miscellaneous function is used for sub program call

a)

M98

b)

M99

c)

M82

d)

M83

68.

NC machine Uses _________ to feed the Program

a)

Punched Tape

b)

Computer

c)

Both A & B

d)

NONE OF THE ABOVE

69.

Point to point system is suitable for _________

a)

Tapping

b)

Boring

c)

Drilling

d)

All of the above

70.

The slides and spindle of the CNC machine are driven by __________

a)

stepper motor

b)

ac motor

c)

pole motor

d)

None

71.

The axis drives that are used in CNC machine tools are the following.

a)

DC servo motor

b)

stepper motor

c)

Both A & B

d)

None

72.

Tungsten in HSS provides ________

a)

Hot hardness & form stability

b)

Keeness of the cutting edge

c)

More wear resistance

d)

All the above

73.

Stellite is composed of Cobalt, Chromium & ___________

a)

Titanium

b)

Molybdenum

c)

Tungsten

d)

Carbon

74.

Commonly used cutting tool material for conventional machine is __________

a)

HSS

b)

Carbide

c)

Diamond

d)

NONE OF THE ABOVE

75.

Spind stop command can be executed by _______

a)

M04

b)

M05

c)

M06

d)

M07

76.

P and Q terms are used as parameters of __________

a)

Canned Cycle

b)

Dwell Time

c)

Offset numbers

d)

none

77.

The Z axis is along the ___________axis

a)

Spindle

b)

X-axis

c)

cutter axis

d)

NONE OF THE ABOVE

78.

G 16 code is used for ___________

a)

XY Plane Selection

b)

Programmable data input

c)

Exact Stop

d)

Polar Co Ordinate command

79.

M07 is the command for _________

a)

Switch on coolant

b)

switch off coolant

c)

stop the spindle rotation

d)

NONE OF THE ABOVE

80.

To unclamp the tool from spindle manually, _______ mode is used

a)

Edit

b)

Jog mode

c)

MDI mode

d)

Both B & C

81.

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

82.

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

a)

Block

b)

Word

c)

Address

d)

Data

83.

G72 W2.5 in this block, select the meaning of W2.5.

a)

Depth of cut

b)

Stoc allowance

c)

Starting point

d)

Finishing allowance

84.

Insert wear compensation can be given in ______

a)

work offset

b)

tool offset

c)

work shift

d)

Machine datum

85.

G42 preparatory function is used for _______

a)

Tool nose radius compensation cancel

b)

Tool nose radius compensation left

c)

Tool nose radius compensation right

d)

Cutter radius compensation cancel

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