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GATE 2020: Manufacturing Quiz 11

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Question 1

NC contouring is an example of

Question 2

In MCU (Machine Control Unit) of codes written for a CNC machines. What does the letter H stands for?

Question 3

The tool of an NC machine has to move along a circular arc from (5,5) to (10,10) while performing an operation. The center of the arc is at (10, 5). Which one of the following NC tool path commands performs the above mentioned operation?

Question 4

A numerical controlled unit is used for a turning operation and the Spindle is rotating at a speed of 200 rpm. The signal impulse transferred to the system is 20000 pulses per minute and each pulse corresponds to each step of a stepper motor. The pitch of the lead screw is 6 mm. Find the basic length unit (BLU) of the system in mm______

Question 5

A point P(1, 3, -5) is translated by 2i + 3j – 4k and then rotated counterclockwise by 90o about the z-axis. The new position of the point is

Question 6

A Robot arm PQ with end coordinates P (0,0) and Q (2,5) rotates counter-clockwise about P in the XY plane by 90 °. The new coordinate pair of the end point Q is
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