Computer Aided Manufacturing (2171903) MCQs

MCQs of NC/CNC Machine Tools

Showing 31 to 40 out of 80 Questions
1 2 3 4 5 6
31.

A standard punch tape is ______ mm wide.

(a)

20
(b)

25
(c)

27
(d)

30
Answer:

Option (b)

32.

Which of the following is not types of NC program reader?

(a)

Card readers
(b)

Punched tape readers
(c)

Laser tape reader
(d)

Mechanical tape reader
Answer:

Option (c)

33.

Which of the following is a type of tape reader?

(a)

Optical or photo-electrical tape reader
(b)

Pneumatic tape readers
(c)

Magnetic tape reader
(d)

All of the mentioned
Answer:

Option (d)

34.

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

(a)

2
(b)

3
(c)

4
(d)

5
Answer:

Option (b)

35.

Continuous path control system is suitable for which type of applications?

(a)

Milling profile
(b)

Reaming
(c)

Drilling
(d)

Broaching
Answer:

Option (a)

36.

In the absolute positioning type of programming system, the tool locations are always defined in relation to fixed point zero.

(a)

True
(b)

False
Answer:

Option (a)

37.

In an incremental positioning programming system, the next tool location must be defined with reference to the previous tool location.

(a)

Correct
(b)

Incorrect
Answer:

Option (a)

38.

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:

Option (a)

39.

_______of motion is always the axis of the main spindle of the machine.

(a)

Z-axis
(b)

Y-axis
(c)

X-axis
(d)

none of the mentioned
Answer:

Option (a)

40.

Due to the higher cutting speeds and feeds in CNC machines which types of forces developed during the machining operations?

(a)

Shear forces
(b)

Fluctuating and variable forces
(c)

Fatigue loads
(d)

Crushing forces
Answer:

Option (b)

Showing 31 to 40 out of 80 Questions
1 2 3 4 5 6