CNC Machines and Automation Quiz

CNC MACHINE AND AUTOMATION OBJECTIVE QUESTIONS

Part - 1

CNC Machines and Automation Quiz

1. In machining of a workpiece, the material is removed by_____

(A) drilling action
(B) melting action
(C) shearing acting
(D) using brittleness of the material

... Answer is (C)
In machining of a workpiece, the material is removed by shearing acting

 

2. The 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

... Answer is (B)
The depth that the tool is plunged into the surface is called as depth of cut

 

3. Feed is measured in units of _______

(A) length/revolution
(B) degree/revolution
(C) length
(D) velocity

... Answer is (A)
Feed is measured in units of length/revolution

 

4. CNC machining centres do not include operations like _______

(A) milling
(B) boring
(C) welding
(D) tapping

... Answer is (C)
CNC machining centres do not include operations like welding

 

5. 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

... Answer is (A)
In CNC systems multiple microprocessors and programmable logic controllers work in parallel

 

6. 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

... Answer is (D)
Which of the following is not the advantage of CNC machines Improved strength of the components

 

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

(A) 2
(B) 3
(C) 4
(D) 5

... Answer is (A)
In how many ways CNC machine tool systems can be classified 2

 

8. Point-to-point systems are used for _____

(A) reaming
(B) parting
(C) grooving
(D) facing

... Answer is (A)
Point-to-point systems are used for reaming

 

9. In part programming, interpolation is used for obtaining _______ trajectory.

(A) helicoidal
(B) pentagonal
(C) triangular
(D) zig-zag

... Answer is (A)
In part programming, interpolation is used for obtaining helicoidal trajectory.

 

10. For CNC machining skilled part programmers are needed.

(A) True
(B) False

... Answer is (A)
For CNC machining skilled part programmers are needed True

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