Production and Industrial Engineering
GATE PI Computer Integrated Manufacturing PYQs
Build your understanding with focused practice from past exam papers.
Questions 11–20 of 20. Imported answers require independent review unless marked reviewed.
Question 55
Open questionPINAT2 marksNeeds review
The worktable of an open loop positioning system is driven by a lead screw with a pitch of 4 mm. The lead screw is connected to the shaft of a stepper motor. A gear of 80 teeth mounted on the stepper motor shaft meshes with a gear of 20 teeth mounted on the lead screw. The step angle of the stepper motor is 9°. The number of pulses required to move the table by 200 mm is____________. [in integer]
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 33
Open questionPIMCQ2 marksNeeds review
A tool of an NC machine has to move along a circular arc from (20,20) to (10,10), while performing an operation. The center of the arc is at (20,10). Which one of the following NC tool commands performs the above mentioned operation?
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 49
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In a point-to-point open-loop NC drive, a stepper motor with 1.8° step angle is coupled to a leadscrew through a gear reduction of 4:1 (4 rotations of the motor enables 1 rotation of leadscrew). The single-start leadscrew has a pitch of 4 mm. The worktable of the system is driven by the leadscrew. If the table moves at a uniform speed of 10 mm/s, the pulse frequency (in Hz) required to drive the stepper motor is ________. [round off to one decimal place]
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Open questionPIMCQ2 marksNeeds review
The vertices of rectangle
are as follows in a 2-D CAD system.
The coordinates of the corresponding new vertices,
,
,
,
after translation of the rectangle along x-axis in the positive direction by 6 units and along y-axis in the positive direction by 3 units areYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 49
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The movement along the z-axis of a CNC drilling machine is controlled by using a servo motor, a lead screw and an incremental encoder. The lead screw has 2 threads/cm and it is directly coupled to the servo motor. The incremental encoder attached to the lead screw emits 100 pulses/revolution. The control resolution in microns is ____________.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 13
Open questionPIMCQ1 markNeeds review
In a NC milling operation, the tool path is generated using absolute programming for the trajectory shown in the figure
The corresponding block of the NC program is
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 51
Open questionPINAT2 marksNeeds review
The worktable in a CNC machine is driven by a leadscrew with a pitch of 2 mm. The leadscrew is directly coupled to a stepper motor of step angle 1.8°. The number of pulses required to move the worktable by 50 mm is _____
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 55
Open questionPINAT2 marksNeeds review
In a planar 2-degree-of-freedom robot, Link 1 of 30 cm length is connected to base by a revolute joint and Link 2 of length 20 cm is connected to Link 1 with a revolute joint as shown in the figure. The work-envelope area (in cm
), covered by point P, is _____ 
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 41
Open questionPIMCQ2 marksNeeds review
The preparatory and miscellaneous codes used in CNC part programming and the functions are given in the Table.
Group I | Group II |
|---|---|
P. G01 | 1. Circular interpolation, counter-clock wise |
Q. G03 | 2. End of program |
R. M06 | 3. Tool change |
S. M02 | 4. Linear interpolation |
The correct combination of code and the respective function is
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 52
Open questionPIMCQ2 marksNeeds review
In a numerical control (NC) machine positioning system, the measures of precision are expressed by considering a single axis as shown in the Figure.
If
is standard deviation of the error distribution, then
,
and
areYour answerChoose one option.
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