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grees) answer only ten of the following multi choice questions. 1. In CNC machine tools, the motors used to control feed rate are: A. Servo motors B. Induction motors C. Stepper motors D. Hydraulic motors 2. The purpose of a feedback device in a CNC machine tool is to provide information of: A. Speed B. Displacement C. Force D. Both speed and displacement 3. Federate on a machining center can be specified in: A. Only feed per revolution B. Either teed per minute or feed per revolution C. Only feed per minute D. Feed per tooth per revolution

grees) answer only ten of the following multi choice questions. 1. In CNC machine tools, the motors used to control feed rate are: A. Servo motors B. Induction motors C. Stepper motors D. Hydraulic motors 2. The purpose of a feedback device in a CNC machine tool is to provide information of: A. Speed B. Displacement C. Force D. Both speed and displacement 3. Federate on a machining center can be specified in: A. Only feed per revolution B. Either teed per minute or feed per revolution C. Only feed per minute D. Feed per tooth per revolution

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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rees) answer only ten of the following multi choice questions. 1. In CNC machine tools, the motors used to control feed rate are: A. Servo motors B. Induction motors C. Stepper motors D. Hydraulic motors 2. The purpose of a feedback device in a CNC machine tool is to provide information of: A. Speed B. Displacement C. Force D. Both speed and displacement 3. Federate on a machining center can be specified in: A. Only feed per revolution B. Either feed per minute or feed per revolution C. Only feed per minute D. Feed per tooth per revolution 4. The correct syntax of an NC block for inclined line milling operation is: A. N-G01 X-F- B. N-G01 Z---F--- C. N-G01 X-Y--F--- D. N-G01 M X Y F... 5. When the contour or continuous path system is used, A. Tool movement from one point to the next does not have to follow a specific path. B. Tool travel is controlled along ong axis at a time. C. Machine and tool movements are precisely controlled at all times and in all planes. D. None of the above. 6. Which of the following NC blocks is correct? A. N10 G01 M03 X90 Y-15 R22 B. N10 G02 M06 Y15 S800 C. N10 G00 X100 Y85 $1000 D. N10 G02 M03 Y-22 FO.2 S1200 7. A stepper motor: TD A. Can control the angular displacement quite precisely B. Cannot control the angular displacement precisely C. Cannot be used for positioning of tables and tools in CNC machine tools D. Cannot be readily interfaced with microprocessor-based controller 8. Program coordinates that are based on a fixed origin are called: A. Incremental 8. Absolute Cartesian D. Relative Page 3 of 4 ENTIAL
Transcribed Image Text:rees) answer only ten of the following multi choice questions. 1. In CNC machine tools, the motors used to control feed rate are: A. Servo motors B. Induction motors C. Stepper motors D. Hydraulic motors 2. The purpose of a feedback device in a CNC machine tool is to provide information of: A. Speed B. Displacement C. Force D. Both speed and displacement 3. Federate on a machining center can be specified in: A. Only feed per revolution B. Either feed per minute or feed per revolution C. Only feed per minute D. Feed per tooth per revolution 4. The correct syntax of an NC block for inclined line milling operation is: A. N-G01 X-F- B. N-G01 Z---F--- C. N-G01 X-Y--F--- D. N-G01 M X Y F... 5. When the contour or continuous path system is used, A. Tool movement from one point to the next does not have to follow a specific path. B. Tool travel is controlled along ong axis at a time. C. Machine and tool movements are precisely controlled at all times and in all planes. D. None of the above. 6. Which of the following NC blocks is correct? A. N10 G01 M03 X90 Y-15 R22 B. N10 G02 M06 Y15 S800 C. N10 G00 X100 Y85 $1000 D. N10 G02 M03 Y-22 FO.2 S1200 7. A stepper motor: TD A. Can control the angular displacement quite precisely B. Cannot control the angular displacement precisely C. Cannot be used for positioning of tables and tools in CNC machine tools D. Cannot be readily interfaced with microprocessor-based controller 8. Program coordinates that are based on a fixed origin are called: A. Incremental 8. Absolute Cartesian D. Relative Page 3 of 4 ENTIAL
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