MCQOPTIONS
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MCQOPTIONS
This section includes 521 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Drawing knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
A cutter tip is initially at X = 10 mm, Y = 20 mm. In a rapid motion, using G00 code, it moves to X = 160 mm, Y = 120 mm. The X and Y axes have maximum speed of 10000 mm/min and 5000 mm/min respectively. Operating at maximum speed, what is the time it will take to reach the destination? |
| A. | 0.90 s |
| B. | 1.08 s |
| C. | 1.20 s |
| D. | 2.16 s |
| Answer» D. 2.16 s | |
| 452. |
Each axis of NC machine is driven by a stepper motor drive with a lead screw. The pitch of lead screw is p mm. The step angle of stepper motor per pulse input is α degrees/pulse. The ratio of gear drive in stepper motor drive is g (number of turns of the motor for each single turn of the lead screw). The number of pulses required to achieve a linear movement of x mm is |
| A. | \(\frac{{\alpha g}}{{360p}}x\) |
| B. | \(\frac{{360g}}{p}x\) |
| C. | \(\frac{g}{{360p}}x\) |
| D. | \(\frac{{360g}}{{p\alpha }}x\) |
| Answer» E. | |
| 453. |
A machine tool having a dedicated computer to help prepare the program and control some or all of the operations of the machine tool is called: |
| A. | Numerical Control Machine Tool |
| B. | Computer Numerical Control Machine Tool |
| C. | Direct Numerical Control Machine Tool |
| D. | None of the above |
| Answer» C. Direct Numerical Control Machine Tool | |
| 454. |
Hard automation is also called |
| A. | Selective automation |
| B. | Total automation |
| C. | Group technology |
| D. | Fixed position automation |
| Answer» E. | |
| 455. |
Adaptive control feature is used: |
| A. | For automation |
| B. | For inventory control |
| C. | Only to give better surface finish to the components |
| D. | Only to reduce power consumed by machine |
| Answer» B. For inventory control | |
| 456. |
Position feedback device on NC Machine is |
| A. | Shaft encoder |
| B. | Linear scales |
| C. | Inductosyn |
| D. | Any of the above |
| Answer» E. | |
| 457. |
In AutoCAD, the commands for constructing or editing a drawing can be given in these ways ______ |
| A. | From pull down menu |
| B. | Directly from key board |
| C. | From the screen menu |
| D. | All of above |
| Answer» E. | |
| 458. |
AutoCAD software were first developed by ______ |
| A. | Microsoft |
| B. | Intel |
| C. | HCL |
| D. | Autodesk Inc |
| Answer» E. | |
| 459. |
In a CAD package, mirror image of a 2D point P(5, 10) is to be obtained about a line which passes through the origin and makes an angle of 45° counterclockwise with the X-axis. The coordinates of the transformed point will be |
| A. | (7.5, 5) |
| B. | (10, 5) |
| C. | (7.5, -5) |
| D. | (10, -5) |
| Answer» C. (7.5, -5) | |
| 460. |
In computer aided part programming by Automatically Program Tool (APT), “COOL NT / ON” is |
| A. | Geometry Statement |
| B. | Motion Statement |
| C. | Post Processor Statement |
| D. | Set up Statement |
| Answer» D. Set up Statement | |
| 461. |
Match the following part programming codes with their respective functionsPart Programming CodesFunctionsP. G01I. Spindle stopQ. G03II. Spindle rotation, clockwiseR. M03III. Circular interpolation, anticlockwiseS. M05IV. Linear interpolation |
| A. | P – II, Q – I, R – IV, S - III |
| B. | P – IV, Q – II, R – III, S - I |
| C. | P – IV, Q – III, R – II, S - I |
| D. | P – III, Q – IV, R – II, S - I |
| Answer» D. P – III, Q – IV, R – II, S - I | |
| 462. |
In a CNC machine tool, the function of an interpolator is to generate |
| A. | reference signal prescribing the shape of the part to be machined |
| B. | error signal for tool radius compensation during machining |
| C. | NC code from the part drawing during post processing |
| D. | signal for the lubrication pump during machining |
| Answer» B. error signal for tool radius compensation during machining | |
| 463. |
How many points do you need to define for the rectangle command? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 1 |
| Answer» B. 3 | |
| 464. |
A rotary actuator which enables precise control of position, velocity, and acceleration of slides in CNC machines is |
| A. | Encoder |
| B. | Resolver |
| C. | Induction |
| D. | Servomotor |
| Answer» E. | |
| 465. |
In a CNC program block, N002 G02 G91 X40 Z40…, G02 AND G91 refer to |
| A. | circular interpolation in counterclockwise direction and incremental dimension |
| B. | circular interpolation in counterclockwise direction and absolute dimension |
| C. | circular interpolation in clockwise direction and incremental dimension |
| D. | circular interpolation in clockwise direction and absolute dimension |
| Answer» D. circular interpolation in clockwise direction and absolute dimension | |
| 466. |
MIS does not require |
| A. | Database |
| B. | Hardware and software |
| C. | Procedures for analysis |
| D. | Bills of materials |
| Answer» E. | |
| 467. |
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? |
| A. | N020 G03 X20 Y20 X10 Y10 R10 |
| B. | N020 G02 X20 Y20 X10 Y10 R10 |
| C. | N020 G02 X10 Y10 X20 Y20 R10 |
| D. | N020 G01 X20 Y20 X10 Y10 R10 |
| Answer» B. N020 G02 X20 Y20 X10 Y10 R10 | |
| 468. |
CADD means |
| A. | Computer Aided Drawings & Data |
| B. | Computer Aided Design & Drafting |
| C. | Civil Aided Design & Drafting |
| D. | Civil Assisted Developed Drawing |
| Answer» C. Civil Aided Design & Drafting | |
| 469. |
A ‘block’ of information in a Numerical Control machine program means |
| A. | one row on tape |
| B. | a work comprising several rows on tape |
| C. | one complete instruction |
| D. | one complete program for a job |
| Answer» D. one complete program for a job | |
| 470. |
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 |
| A. | (-2, 5) |
| B. | (-5, 2) |
| C. | (-5, -2) |
| D. | (2, -5) |
| Answer» C. (-5, -2) | |
| 471. |
Numerical control |
| A. | applies only to milling machines |
| B. | is a method for producing exact number of parts per hour |
| C. | is a method for controlling by means of a set of instructions |
| D. | all of these |
| Answer» D. all of these | |
| 472. |
In AutoCAD, the symbol indicates to |
| A. | Lengthen object using object |
| B. | Shorten object using other object |
| C. | Create mirror image of objects |
| D. | Moe object from one place to other place |
| Answer» C. Create mirror image of objects | |
| 473. |
In a CNC Program BlockN10 G02 G91 X 52 Z 25 ……G02 represents: |
| A. | linear interpolation |
| B. | clockwise circular interpolation |
| C. | incremental command |
| D. | absolute command |
| Answer» C. incremental command | |
| 474. |
A cylindrical Robot can reach any point in a cylinder of height L and radius 2L, except for the points in an inner cylinder of height L and radius L. The volume for the Cylindrical Robot work envelope will be |
| A. | 9.42L3 |
| B. | 6.24L3 |
| C. | 9.12L3 |
| D. | 9.86L3 |
| Answer» B. 6.24L3 | |
| 475. |
CAE and CAM are linked through |
| A. | a common database and communication system |
| B. | NC-type programming and automated design |
| C. | assembly automation and tool production |
| D. | parts production and testing |
| Answer» B. NC-type programming and automated design | |
| 476. |
In CNC milling operation feed drives are provided by: |
| A. | synchronous motors |
| B. | stepper motors |
| C. | servo motors |
| D. | asynchronous motors |
| Answer» D. asynchronous motors | |
| 477. |
Numeric control is |
| A. | Used only for milling operations |
| B. | Used to produce exact number of parts per hour |
| C. | Controlled by means of a set of instructions |
| D. | Only used for lathe operations |
| Answer» D. Only used for lathe operations | |
| 478. |
How many grip points does a circle have in Auto CAD? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» E. | |
| 479. |
In a basic NC machine, programmed instructions are stored in |
| A. | Punched tape |
| B. | Graphic terminal |
| C. | Head box |
| D. | None of the above |
| Answer» B. Graphic terminal | |
| 480. |
In a closed loop control NC machine, tool system is the design of control loop that decides |
| A. | Position error, accuracy and repeatability |
| B. | Cost of the machine tool, maintenance and operation |
| C. | Programming of a part, load and torque |
| D. | Cost of machining |
| Answer» B. Cost of the machine tool, maintenance and operation | |
| 481. |
In CAD/CAM the term ‘PLC’ stands for |
| A. | Process Logic Control |
| B. | Programmable Logic Control |
| C. | Position Logic Control |
| D. | Parameter Logical Control |
| Answer» C. Position Logic Control | |
| 482. |
For the CNC part programming, match Group A with Group B:Group AGroup BP : circular interpolation, counter clock wiseI : G02Q : dwellII : G03R : circular interpolation, clock wiseIII : G04S : point to point counteringIV : G00 |
| A. | P-II, Q-III, R-I, S-IV |
| B. | P-I, Q-III, R-II, S-IV |
| C. | P-I, Q-IV, R-II, S-III |
| D. | P-II, Q-I, R-III, S-IV |
| Answer» B. P-I, Q-III, R-II, S-IV | |
| 483. |
A triangular facet in a CAD model has vertices: P1 (0, 0, 0) P2 (1, 1, 0) and P3 (1, 1, 1). The area of the facet is |
| A. | 0.5 |
| B. | 0.707 |
| C. | 1.414 |
| D. | 1.732 |
| Answer» C. 1.414 | |
| 484. |
Circular arc on a part profile is being machined on a vertical CNC milling machine. CNC part program using metric units with absolute dimensions is listed below:---------------------------------------N60 G01 X 30 Y 55 Z – 5 F50N70 G02 X 50 Y 35 R 20N80 G01 Z 5---------------------------------------The coordinates of the centre of the circular arc are: |
| A. | (30, 55) |
| B. | (50, 55) |
| C. | (50, 35) |
| D. | (30, 35) |
| Answer» E. | |
| 485. |
A customer insists on a modification to change the BLU of the CNC drive to 10 microns without changing the table speed. The modification can be accomplished by |
| A. | Changing U to ½ and reducing f to f/2 |
| B. | Changing U to 1/8 and increasing f to 2f |
| C. | Changing U to ½ and keeping f unchanged |
| D. | Keeping U unchanged and increasing f to 2f |
| Answer» B. Changing U to 1/8 and increasing f to 2f | |
| 486. |
Match the followingNC CodeDefinitionP. M051. Absolute coordinate systemQ. G012. DwellR. G043. Spindle stopS. G904. Linear interpolation |
| A. | P – 2, Q – 3, R – 4, S – 1 |
| B. | P – 3, Q – 4, R – 1, S – 2 |
| C. | P – 3, Q – 4, R – 2, S –1 |
| D. | P – 4, Q – 3, R – 2, S – 1 |
| Answer» D. P – 4, Q – 3, R – 2, S – 1 | |
| 487. |
In a 2D CAD package, clockwise circular arc of radius 5 units, specified from points A (15, 10) to B (10, 15) has its centre at: |
| A. | (15, 10) |
| B. | (10, 10) |
| C. | (10, 15) |
| D. | (15, 15) |
| Answer» E. | |
| 488. |
In a CNC milling operation, the tool has to machine the circular arc from point (20, 20) to (10, 10) at sequence number 5 of the CNC part program. If the center of the arc is at (20, 10) and the machine has incremental mode of defining position coordinates, the correct tool path command is |
| A. | N 05 G 90 G01 X–10 Y–10 R10 |
| B. | N 05 G91 G03 X–10 Y–10 R10 |
| C. | N 05 G90 G03 X20 Y20 R10 |
| D. | N 05 G91 G02 X20 Y20 R10 |
| Answer» C. N 05 G90 G03 X20 Y20 R10 | |
| 489. |
During the execution of a CNC part program block N020 G02 X45 0 Y25.0 R5.0 the type of tool motion will be |
| A. | Circular interpolation - clockwise |
| B. | Circular interpolation - counter clockwise |
| C. | Linear interpolation |
| D. | Rapid feed |
| Answer» B. Circular interpolation - counter clockwise | |
| 490. |
In computer aided drafting practice, an arc is defined by |
| A. | Two end points only |
| B. | Center and radius |
| C. | Radius and one end point |
| D. | Two end points and center |
| Answer» E. | |
| 491. |
A point P (1, 3, -5) is translated by 2î + 3ĵ - 4k̂ and then rotated counter clockwise by 90° about the z-axis. The new position of the given point is |
| A. | (-6, 3, -9) |
| B. | (-6, -3, -9) |
| C. | (6, 3, -9) |
| D. | (6, 3, 9) |
| Answer» B. (-6, -3, -9) | |
| 492. |
Consider the following components:(a) A dedicated computer(b) Bulk memory(c) Telecommunication linesWhich of these components are required for a DNC system? |
| A. | a, b and c |
| B. | b and c |
| C. | a and b |
| D. | a and c |
| Answer» B. b and c | |
| 493. |
A language for simulating models of business activity is |
| A. | SPSS |
| B. | PL/1 |
| C. | GPSS |
| D. | COBOL |
| Answer» E. | |
| 494. |
In a point-to-point control type of NC system |
| A. | control of position and velocity of tool is essential |
| B. | control of only position of tool is essential |
| C. | control of only velocity of the tool is sufficient |
| D. | neither position nor velocity need be controlled |
| Answer» C. control of only velocity of the tool is sufficient | |
| 495. |
Flexible manufacturing allows for |
| A. | automated design |
| B. | factor management |
| C. | tool design and tool production |
| D. | quick and inexpensive product changes |
| Answer» E. | |
| 496. |
AutoCAD was first introduced in the year ______ |
| A. | 1982 |
| B. | 1960 |
| C. | 1992 |
| D. | 2000 |
| Answer» B. 1960 | |
| 497. |
In modern CNC machine tools, the backlash has been eliminated by |
| A. | Preloaded ballscrews |
| B. | Slider crank mechanism |
| C. | Rack and pinion |
| D. | Ratchet and pinion |
| Answer» B. Slider crank mechanism | |
| 498. |
AutoCAD 2015 version requires minimum Memory of ______ |
| A. | 1GB |
| B. | 2GB |
| C. | 3GB |
| D. | 4GB |
| Answer» C. 3GB | |
| 499. |
Components of CAD are ______ |
| A. | CPU Monitor, Mouse |
| B. | CPU, Memory, Hard disk |
| C. | Design, Analysis, Visualization |
| D. | Computer, Analysis, Drawing |
| Answer» D. Computer, Analysis, Drawing | |
| 500. |
Interpolator in a CNC machine |
| A. | controls spindle speed |
| B. | coordinates axes movements |
| C. | operates tool changer |
| D. | commands canned cycle |
| Answer» C. operates tool changer | |