Question 1

he depth that the tool is plunged into the surface is called as
A)feed
B)depth of cut
C)depth of tool
D)working depth

Accepted Answer

Depth of cut refers to the depth at which the tool is plunged into the material being machined. It is a critical parameter in machining operations, determining the thickness of the layer of material removed in one pass of the cutting tool.

Question 2

In CNC systems multiple microprocessors and programmable logic controllers work
A)in parallel
B)in series
C)one after the other
D)for 80% of the total machining time

Accepted Answer

In CNC (Computer Numerical Control) systems, multiple microprocessors and programmable logic controllers work in parallel to manage various tasks simultaneously, such as controlling the machine axes, managing tool changes, and monitoring the machining process. This parallel operation enhances the efficiency and speed of CNC machining operations.

Question 3

Which of the following is not the advantage of CNC machines?
A)Higher flexibility
B)Improved quality
C)Reduced scrap rate
D)Improved strength of the components

Accepted Answer

Improved strength of the components is not an advantage directly attributed to CNC machines. CNC machines offer advantages like higher flexibility, improved quality, and reduced scrap rate due to their precision and automation, but they do not inherently improve the strength of the materials being machined. The strength of components is primarily determined by the material used and the design of the component, not the manufacturing process.

Question 4

In how many ways CNC machine tool systems can be classified?
A)2
B)3
C)4
D)5

Accepted Answer

The answer of In how many ways CNC machine tool...

Question 5

Point-to-point systems are used for
A)reaming
B)parting
C)grooving
D)facing

Accepted Answer

The answer of Point-to-point systems are used for
A)reaming
B)parting
C)grooving
D)facing...

Question 6

In part programming, interpolation is used for obtaining trajectory.
A)helicoidal
B)pentagonal
C)triangular
D)zig-zag

Accepted Answer

Helicoidal interpolation is used for creating complex 3D paths such as spirals or threads, which are trajectories in part programming.

Question 7

For CNC machining skilled part programmers are needed.

Accepted Answer

CNC machining requires skilled part programmers to create and input precise instructions that guide the machine tools to produce parts with high accuracy and specifications.

Question 8

An absolute NC system is one in which all position coordinates are referred to one fixed origin called the zero point.

Accepted Answer

In an absolute NC (Numerical Control) system, all position coordinates are indeed referred to one fixed origin, known as the zero point, making the statement true. This system simplifies programming by allowing each position to be uniquely identified relative to a single, constant reference point.

Question 9

In , the coordinates are mentioned in the program with respect to one reference point
A)Incremental System
B)Absolute System
C)Datum System
D)Screen Coordinates System

Accepted Answer

In the Absolute System, coordinates are specified with respect to a fixed reference point, often called the origin or datum point.

Question 10

...........is a group of words or coded instruction for the NC/CNC system to execute a particular movement.
A)Sequence
B)Address
C)Code
D)Block

Accepted Answer

A block is a group of words or coded instructions for the NC/CNC system to execute a particular movement. It represents a set of commands that direct the machine to perform specific actions.

Question 11

Each coded instruction in a set of instructions is called as……
A)Words
B)Alphabet
C)Numbers
D)Format

Accepted Answer

In computing and programming, each coded instruction in a set of instructions is commonly referred to as a "word." A word is a fixed-sized piece of data handled as a unit by the instruction set or the hardware of the processor.

Question 12

In , the coordinates are mentioned in the program with respect to one Previous point.
A)Incremental System
B)Absolute System
C)Datum System
D)Screen Coordinates System

Accepted Answer

In an Incremental System, the coordinates are mentioned with respect to the previous point, not a fixed origin. This contrasts with an Absolute System where coordinates are given with respect to a fixed origin.

Question 13

G00 Preparatory code is used for
A)Rapid Travel Execution
B)Rapid Travel Positioning
C)Rapid Travel sequencing
D)Rapid clockwise interpolation

Accepted Answer

G00 is a preparatory command used in CNC programming for rapid positioning of the tool to a specified location. It moves the tool as quickly as possible to the commanded position, but it does not control the path or maintain a specific feed rate for cutting.

Question 14

In a CNC program block, N05 GO1 G91 G33 X20 Z-40……, G33 refer to
A)Peck Drilling
B)Counter Boring
C)Thread Cutting
D)Grooving

Accepted Answer

G33 is used for thread cutting in CNC programming. It enables the machine to cut precise threads by synchronizing the spindle rotation with the linear movement of the tool.

Question 15

In CNC Program M03 is refer to……
A)Spindle ON in Clockwise rotation
B)Spindle ON in Counter Clockwise rotation
C)Spindle OFF in Clockwise rotation
D)Spindle OFF in Counter Clockwise rotation

Accepted Answer

M03 is a G-code command used in CNC programming to turn the spindle on in a clockwise direction.

Question 16

In CNC Program M98 is refer to……
A)CANCEL Subroutine
B)Call Sub-Program
C)Call Subroutine
D)CANCEL Sub-Program

Accepted Answer

The answer of In CNC Program M98 is refer to……
A)CANCEL...

Question 17

In a CNC program block, N05 GO1 G91 G33 X20 Z-40 K5……, K refer to
A)Depth of cut
B)Pitch
C)Multiple Threading Cycle
D)Feed

Accepted Answer

In CNC programming, particularly when dealing with G33 which is used for threading operations, the K value specifies the pitch of the thread. The pitch is the distance from a point on one thread to a corresponding point on the next thread along the length of the workpiece.

Question 18

A CNC Lathe is usually a machine tool with Z axes is…..
A)Line Joining origin and vertical movement
B)Line perpendicular to Y axis
C)Both A & B
D)Line Joining Chuck centre & tail stock centre

Accepted Answer

The Z axis on a CNC lathe typically refers to the axis that runs along the length of the machine, joining the chuck center and tailstock center.

Question 19

B rotational axis is rotation about Axis.
A)X
B)Y
C)Z
D)C

Accepted Answer

The answer of B rotational axis is rotation about Axis.
A)X
B)Y
C)Z
D)C...

Question 20

Secondary Linear Axes U,V & W are ……… to X,Y & Z-axis.
A)Perpendicular
B)Parallel
C)Rotational
D)All of the above

Accepted Answer

The answer of Secondary Linear Axes U,V & W are...

Quiz 4: Computer-Aided Design (CAD)

he depth that the tool is plunged into the surface is called as

In CNC systems multiple microprocessors and programmable logic controllers work

Which of the following is not the advantage of CNC machines?

In how many ways CNC machine tool systems can be classified?

Point-to-point systems are used for

In part programming, interpolation is used for obtaining trajectory.

For CNC machining skilled part programmers are needed.

An absolute NC system is one in which all position coordinates are referred to one fixed origin called the zero point.

In , the coordinates are mentioned in the program with respect to one reference point

...........is a group of words or coded instruction for the NC/CNC system to execute a particular movement.

Each coded instruction in a set of instructions is called as……

In , the coordinates are mentioned in the program with respect to one Previous point.

G00 Preparatory code is used for

In a CNC program block, N05 GO1 G91 G33 X20 Z-40……, G33 refer to

In CNC Program M03 is refer to……

In CNC Program M98 is refer to……

In a CNC program block, N05 GO1 G91 G33 X20 Z-40 K5……, K refer to

A CNC Lathe is usually a machine tool with Z axes is…..

B rotational axis is rotation about Axis.

Secondary Linear Axes U,V & W are ……… to X,Y & Z-axis.