McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
Chapters
| 251. |
Incremental dimension in circular interpolation in X-axis is denoted by |
| A. | J |
| B. | I |
| C. | K |
| D. | None of the above |
| Answer» B. I | |
| 252. |
Repetitive CNC machine operations conveniently performing and execute with one command instead of programming of series of individual move called ….. |
| A. | Common Cycle |
| B. | Incremental Programming |
| C. | Canned Cycle |
| D. | None of the above |
| Answer» C. Canned Cycle | |
| 253. |
In CNC programming …….. is commonly used canned cycle for Stock removal cycle |
| A. | G71 |
| B. | G72 |
| C. | G73 |
| D. | G74 |
| Answer» D. G74 | |
| 254. |
……… is the origin of the coordinate system which is defined by manufacturer they cannot be changed |
| A. | Blocking Point |
| B. | machine Zero Point |
| C. | Start Point |
| D. | Program Zero point |
| Answer» B. machine Zero Point | |
| 255. |
To indicate the position of the workpiece ly & easily machine zero pint should be displaced to another point on the workpiece called… |
| A. | Workpiece zero Point |
| B. | machine Zero Point |
| C. | Start Point |
| D. | Program Zero point |
| Answer» A. Workpiece zero Point | |
| 256. |
XY Plane Selection in CNC machining is done by….. |
| A. | G16 |
| B. | G17 |
| C. | G18 |
| D. | G19 |
| Answer» B. G17 | |
| 257. |
The distance of a given tool tip from the surface of workpiece is known as….. |
| A. | Tool length |
| B. | Tool length offset H |
| C. | Cutter radius |
| D. | Compensation |
| Answer» B. Tool length offset H | |
| 258. |
In CNC machining tool radius compensation turning the left mode ON programming contour done by |
| A. | G40 |
| B. | G41 |
| C. | G42 |
| D. | G43 |
| Answer» B. G41 | |
| 259. |
Maximum spindle speed limitation code in CNC Machine |
| A. | G90 |
| B. | G91 |
| C. | G92 |
| D. | G93 |
| Answer» C. G92 | |
| 260. |
Which of the following code is used to return to a reference point? |
| A. | G23 |
| B. | G28 |
| C. | G14 |
| D. | G19 |
| Answer» B. G28 | |
| 261. |
The following code will produce dwell for a specified time… |
| A. | G18 |
| B. | G65 |
| C. | G45 |
| D. | G04 |
| Answer» D. G04 | |
| 262. |
Which of the following code will give point to point movement? |
| A. | G00 |
| B. | G01 |
| C. | G56 |
| D. | G94 |
| Answer» A. G00 | |
| 263. |
Which rule implement for axes Nomenclature? |
| A. | Left-hand rule |
| B. | Right-Hand Rule |
| C. | Thumb Rule |
| D. | None of the above |
| Answer» B. Right-Hand Rule | |
| 264. |
Automatic tool change in CNC Machine code |
| A. | M05 |
| B. | M06 |
| C. | M07 |
| D. | M09 |
| Answer» B. M06 | |
| 265. |
Full form of MCU is………… |
| A. | Machine computer unit |
| B. | Machine control universal |
| C. | Machine control unit |
| D. | None of the above |
| Answer» C. Machine control unit | |
| 266. |
The machine tool, in which calculation and setting of the operating conditions like depth of cut, feed, speed are done during the machining by the control system itself, is called |
| A. | Computer Numerical Control System |
| B. | Direct Numerical Control System |
| C. | Machining Center System |
| D. | Adaptive Control System |
| Answer» D. Adaptive Control System | |
| 267. |
In which machine we get feedback? |
| A. | Lathe machine |
| B. | NC machine |
| C. | CNC machine |
| D. | Milling machine |
| Answer» C. CNC machine | |
| 268. |
Which machine's spindle is used to horizontal work? |
| A. | UMC |
| B. | VMC |
| C. | HMC |
| D. | DNC |
| Answer» C. HMC | |
| 269. |
What is the full form of ATC? |
| A. | Automatic tool changer |
| B. | Arranged tool changer |
| C. | Automatic tool controller |
| D. | Arranged tool controller |
| Answer» A. Automatic tool changer | |
| 270. |
In which system we get feedback? |
| A. | Open-loop system |
| B. | Machine control system |
| C. | Closed-loop system |
| D. | None of the above |
| Answer» C. Closed-loop system | |
| 271. |
How many maximum tools can ATC hold? |
| A. | 60 |
| B. | 80 |
| C. | 90 |
| D. | 100 |
| Answer» B. 80 | |
| 272. |
In the CNC machine which device used to hold the workpiece? |
| A. | Automatic pallet changer |
| B. | Automatic work part positioner |
| C. | A & B both |
| D. | None of the above |
| Answer» C. A & B both | |
| 273. |
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» B. (10, 5) | |
| 274. |
NC contouring is an example of |
| A. | Continuous path positioning |
| B. | Point-to-point positioning |
| C. | Absolute positioning |
| D. | Incremental positioning |
| Answer» A. Continuous path positioning | |
| 275. |
With reference to NC machines, which of the following statements is wrong |
| A. | Both closed-loop and open-loop control systems are used |
| B. | Paper tapes, floppy tapes and cassettes are used for data storage |
| C. | Digitizers may be used as interactive input devices |
| D. | Post processor is an item of hardware |
| Answer» C. Digitizers may be used as interactive input devices | |
| 276. |
In finish machining of an island on a casting with CNC milling machine, an end mill with 10 mm diameter is employed. The corner points of the island are represented by (0, 0), (0, 30), (50, 30) and (50, 0). By applying cutter radius right compensation, the trajectory of the cutter will be |
| A. | (-5, 0), (-5, 35), (55, 35), (55,-5), (-5,-5) |
| B. | (0,-5), (55,-5), (55, 35), (-5, 35), (-5,-5) |
| C. | (5, 5), (5, 25), (45, 25), (45, 5), (5, 5) |
| D. | (5, 5), (45, 5), (45, 25), (5, 25), (5, 5) |
| Answer» A. (-5, 0), (-5, 35), (55, 35), (55,-5), (-5,-5) | |
| 277. |
The lost motion in CNC machine tool is on account of |
| A. | Backlash in gearing |
| B. | Wind-up of drive shafts |
| C. | Deflection of machine tool members |
| D. | All the above |
| Answer» A. Backlash in gearing | |
| 278. |
From following, the alternative name for RP is ________ |
| A. | Additive Manufacturing |
| B. | Layer Manufacturing |
| C. | Direct CAD Manufacturing |
| D. | All of the above |
| Answer» D. All of the above | |
| 279. |
Input of RP data is ______ |
| A. | CAM data |
| B. | CAPP data |
| C. | CAD data |
| D. | All of the above |
| Answer» C. CAD data | |
| 280. |
In the ___________ process, one starts with a single block of solid material larger than the final size of the desired object and material is removed until the desired shape is reached. |
| A. | Subtractive process |
| B. | Additive process |
| C. | Formative process |
| D. | All of above |
| Answer» A. Subtractive process | |
| 281. |
__________ is one where mechanical forces or restricting forms are applied on a material so as to form it into the desired shape |
| A. | Subtractive process |
| B. | Additive process |
| C. | Formative process |
| D. | All of above |
| Answer» C. Formative process | |
| 282. |
Which of the following is not subtractive process? |
| A. | Milling |
| B. | Stereo-lithography |
| C. | Sawing |
| D. | EDM |
| Answer» B. Stereo-lithography | |
| 283. |
Which of the following process is not formative process? |
| A. | Bending |
| B. | Plastic injection molding |
| C. | Selective Laser Sintering |
| D. | Forging |
| Answer» C. Selective Laser Sintering | |
| 284. |
Choose the correct sequence to generate prototype |
| A. | 3D CAD data - CAD solid model - STL file - RP prototype |
| B. | CAD solid model - 3D CAD data - RP prototype - STL file |
| C. | STL file - 3D CAD data - CAD solid model - RP prototype |
| D. | 3D CAD data - STL file - CAD solid model - RP prototype |
| Answer» A. 3D CAD data - CAD solid model - STL file - RP prototype | |
| 285. |
Which of the following can not be the input of CAD solid model? |
| A. | Physical mockup |
| B. | 2D surface data |
| C. | Tooling |
| D. | 3D CAD data |
| Answer» C. Tooling | |
| 286. |
Full form of STL is _____ |
| A. | Straight-lithography |
| B. | Streto-lithography |
| C. | Stereo-lithography |
| D. | Straight-lipsography |
| Answer» C. Stereo-lithography | |
| 287. |
For rapid prototyping 3D CAD model should be converted into______file |
| A. | SGC |
| B. | SLA |
| C. | STL |
| D. | SLS |
| Answer» C. STL | |
| 288. |
Process of converting STL file model in to layers is called________in RP |
| A. | chopping |
| B. | slicing |
| C. | cutting |
| D. | trimming |
| Answer» B. slicing | |
| 289. |
Support structures are required for ______ |
| A. | thin portions |
| B. | thick portions |
| C. | overhanging portions |
| D. | all of the above |
| Answer» C. overhanging portions | |
| 290. |
The STL files translate the part geometry from a CAD system to________ |
| A. | CNC machine |
| B. | VMC machine |
| C. | RP machine |
| D. | CAPP machine |
| Answer» C. RP machine | |
| 291. |
Slicing a part is easier in ______ |
| A. | B-rep method |
| B. | STL method |
| C. | CSG method |
| D. | PRT method |
| Answer» B. STL method | |
| 292. |
STL file converts curved surfaces into_______ |
| A. | Polygons |
| B. | Lines |
| C. | Surfaces |
| D. | None of the above |
| Answer» A. Polygons | |
| 293. |
Which of the following is not Liquid-based RP system? |
| A. | Stereolithography Apparatus (SLA) |
| B. | Laminated Object Manufacturing (LOM) |
| C. | Solid Ground Curing (SGC) |
| D. | Solid Object Ultraviolet-Laser Printer (SOUP |
| Answer» B. Laminated Object Manufacturing (LOM) | |
| 294. |
Full form of FDM is_______ |
| A. | Fixed Development Modelling |
| B. | Fusion Development Modelling |
| C. | Fused Deposition Modelling |
| D. | Focused Deposition Modelling |
| Answer» C. Fused Deposition Modelling | |
| 295. |
Full form of MJM is______ |
| A. | Multi Joint Modelling |
| B. | Multi Jet Modelling |
| C. | Muted Jet Modelling |
| D. | Mitred Jet Modelling |
| Answer» B. Multi Jet Modelling | |
| 296. |
Which of the following is not Solid-based RP system? |
| A. | Laminated Object Manufacturing (LOM) |
| B. | Paper Lamination Technology (PLT) |
| C. | Electron Beam Melting (EBM) |
| D. | Fused Deposition Modeling (FDM) |
| Answer» C. Electron Beam Melting (EBM) | |
| 297. |
Laminated Object Manufacturing (LOM) is developed by_______ |
| A. | Stratasys |
| B. | CAM-LEM |
| C. | Kira Corporation |
| D. | Cubic Technologies |
| Answer» D. Cubic Technologies | |
| 298. |
Which of the following is not Powder-Based RP system? |
| A. | Selective Laser Sintering (SLS) |
| B. | Solid Object Ultraviolet-Laser Printer (SOUP) |
| C. | Electron Beam Melting (EBM) |
| D. | Direct Metal Deposition (DMD) |
| Answer» B. Solid Object Ultraviolet-Laser Printer (SOUP) | |
| 299. |
Which of the following RP system is not developed by 3D systems? |
| A. | Selective Laser Sintering (SLS) |
| B. | Multi-Jet Modeling System (MJM) |
| C. | Paper Lamination Technology (PLT) |
| D. | Stereolithography Apparatus (SLA) |
| Answer» C. Paper Lamination Technology (PLT) | |
| 300. |
Which of the following is used as base material in Stereolithography (SLA) process? |
| A. | Thermoplastics , Metals powders |
| B. | Thermoplastics , Eutectic metals. |
| C. | Titanium alloys |
| D. | Photopolymer |
| Answer» D. Photopolymer | |
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