MCQOPTIONS
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MCQOPTIONS
This section includes 800 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 551. |
_The method of grinding used to produce a straight or tapered surface on a workpiece, is$? |
| A. | Internal cylindrical grinding |
| B. | Form grinding |
| C. | External cylindrical grinding |
| D. | Surface grinding |
| Answer» D. Surface grinding | |
| 552. |
_In which of the following milling machine, the table can be tilted in a vertical plane by providing a swivel arrangement at the knee?$? |
| A. | Universal milling machine |
| B. | Plain milling machine |
| C. | Universal milling machine |
| D. | Hand milling machine |
| Answer» D. Hand milling machine | |
| 553. |
_The maximum possible draft in cold rolling of sheet increases with the$? |
| A. | Increase in coefficient of friction |
| B. | Decrease in coefficient of friction |
| C. | Decrease in roll radius |
| D. | Decrease in roll velocity |
| Answer» B. Decrease in coefficient of friction | |
| 554. |
_The addition of lead, sulphur and phosphorus to low carbon steels, help to$? |
| A. | Reduce built up edge |
| B. | Break up chips |
| C. | Improve machinability |
| D. | All of these |
| Answer» E. | |
| 555. |
_The grinding of long, slender shafts or bars is usually done by$? |
| A. | In-feed grinding |
| B. | Through feed grinding |
| C. | End-feed grinding |
| D. | Any one of these |
| Answer» C. End-feed grinding | |
| 556. |
_A process of removing metal by pushing or pulling a cutting tool is called$? |
| A. | Up milling |
| B. | Down milling |
| C. | Forming |
| D. | Broaching |
| Answer» E. | |
| 557. |
_While current is shut down in the welding circuit, what kind of voltage exists between the output terminals of the welding machine?$? |
| A. | GTAW |
| B. | Open air cut voltage |
| C. | Kerf |
| D. | Gouging |
| Answer» C. Kerf | |
| 558. |
_Broaching is applied for machining$? |
| A. | Internal and external surfaces |
| B. | Round or irregular shaped holes |
| C. | External flat and contoured surfaces |
| D. | All of these |
| Answer» E. | |
| 559. |
_The depth of cut in drilling is __________ the drill diameter.$? |
| A. | Equal to |
| B. | One-fourth |
| C. | One-half |
| D. | Double |
| Answer» D. Double | |
| 560. |
_In order to grind soft material$? |
| A. | Coarse grained grinding wheel is used |
| B. | Fine grained grinding wheel is used |
| C. | Medium grained grinding wheel is used |
| D. | Any one of these |
| Answer» B. Fine grained grinding wheel is used | |
| 561. |
_Crater wear is predominant in$? |
| A. | Carbon tool steels |
| B. | Tungsten carbide tools |
| C. | High speed steel tools |
| D. | Ceramic tools |
| Answer» C. High speed steel tools | |
| 562. |
_In a shaper$? |
| A. | Tool is stationary and work reciprocates |
| B. | Work is stationary and tool reciprocates |
| C. | Tool moves over stationary work |
| D. | Tool moves over reciprocating work |
| Answer» C. Tool moves over stationary work | |
| 563. |
_Cutting fluids are used to$? |
| A. | Cool the tool |
| B. | Improve surface finish |
| C. | Cool the workpiece |
| D. | All of these |
| Answer» E. | |
| 564. |
_A single point tool has$? |
| A. | Rake angle |
| B. | Cutting angle |
| C. | Lip angle |
| D. | All of these |
| Answer» E. | |
| 565. |
_Which of the following statement is correct for orthogonal cutting system?$? |
| A. | The cutting edge of the tool is perpendicular to the direction of tool travel |
| B. | The cutting edge clears the width of the workpiece on either ends |
| C. | The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge |
| D. | All of the above |
| Answer» E. | |
| 566. |
_The chamfering is an essential operation after$? |
| A. | Knurling |
| B. | Rough turning |
| C. | Boring |
| D. | Thread cutting |
| Answer» E. | |
| 567. |
_The common welding error that occurs due to shrinkage of weld metal, faulty clamping of parts, faulty penetration or overheating at joints is called?$? |
| A. | Distortion |
| B. | Warping |
| C. | Porous weld |
| D. | Poor fusion |
| Answer» C. Porous weld | |
| 568. |
_Which of the following is the correct data structure for solid models?$? |
| A. | Solid part - faces - edges - vertices |
| B. | Solid part - edges - faces - vertices |
| C. | Vertices - edges - faces - solid parts |
| D. | Vertices - faces- edges - solid parts |
| Answer» D. Vertices - faces- edges - solid parts | |
| 569. |
_The size of a shaper is given by$? |
| A. | Stroke length |
| B. | Motor power |
| C. | Mass of machine |
| D. | Rate size |
| Answer» B. Motor power | |
| 570. |
_The structure of a grinding wheel depends upon$? |
| A. | Hardness of the material being ground |
| B. | Nature of the grinding operation |
| C. | Finish required |
| D. | All of these |
| Answer» E. | |
| 571. |
_The process of improving the cutting action of the grinding wheel is called$? |
| A. | Truing |
| B. | Dressing |
| C. | Facing |
| D. | Clearing |
| Answer» C. Facing | |
| 572. |
_In drilling Bakelite and fibrous plastics, the point angle of a drill is$? |
| A. | 90° |
| B. | 118° |
| C. | 135° |
| D. | 150° |
| Answer» B. 118¬¨‚àû | |
| 573. |
_The capacity of a material to be welded under the imposed fabrication conditions into a specific, suitably designed structure and to perform satisfactorily in the intended service is known as?$? |
| A. | Weldment |
| B. | Weld tab |
| C. | Weldability |
| D. | Tack weld |
| Answer» D. Tack weld | |
| 574. |
_Which of the following statement is correct about EDM machining?$? |
| A. | It can machine hardest materials |
| B. | It produces high degree of surface finish |
| C. | The tool and work are never in contact with each other |
| D. | All of these |
| Answer» E. | |
| 575. |
_Crater wear occurs mainly on the$? |
| A. | Nose part, front relief face and side relief face of the cutting tool |
| B. | Face of the cutting tool at a short distance from the cutting edge only |
| C. | Cutting edge only |
| D. | Front face only |
| Answer» C. Cutting edge only | |
| 576. |
_In a single point tool, the angle between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base, is known as$? |
| A. | Side relief angle |
| B. | End relief angle |
| C. | Back rake angle |
| D. | Side rake angle |
| Answer» C. Back rake angle | |
| 577. |
_Chip breakers are used to$? |
| A. | Increase tool life |
| B. | Remove chips from bed |
| C. | Break the chips into short segments |
| D. | To minimize heat generation |
| Answer» D. To minimize heat generation | |
| 578. |
_The lathe spindles are usually made hollow and provided with$? |
| A. | Internal taper |
| B. | External taper |
| C. | Internal and external taper |
| D. | No taper |
| Answer» B. External taper | |
| 579. |
_In metal cutting operations, the shear angle is the angle made by the shear plane with the$? |
| A. | Direction of the tool axis |
| B. | Direction of tool travel |
| C. | Perpendicular to the direction of the tool axis |
| D. | Central plane of the workpiece |
| Answer» C. Perpendicular to the direction of the tool axis | |
| 580. |
_A broach has$? |
| A. | Roughing teeth |
| B. | Semi-finishing teeth |
| C. | Finishing teeth |
| D. | All of these |
| Answer» E. | |
| 581. |
_The cutting fluid mostly used for machining steel is$? |
| A. | Water |
| B. | Soluble oil |
| C. | Dry |
| D. | Heavy oils |
| Answer» C. Dry | |
| 582. |
_The cutting angle of a flat drill varies from$? |
| A. | 3° to 8° |
| B. | 20° to 30° |
| C. | 60° to 90° |
| D. | 90° to 120° |
| Answer» E. | |
| 583. |
_The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive and bond, is called$? |
| A. | Truing |
| B. | Dressing |
| C. | Facing |
| D. | Clearing |
| Answer» B. Dressing | |
| 584. |
_A _________ grinding wheel is used to grind soft materials.$? |
| A. | Course grained |
| B. | Medium grained |
| C. | Fine grained |
| D. | None of these |
| Answer» B. Medium grained | |
| 585. |
_Which of the following statement is correct about nose radius?$? |
| A. | It improves tool life |
| B. | It improves the surface finish |
| C. | Both (A) and (B) |
| D. | None of these |
| Answer» D. None of these | |
| 586. |
_The vector sum of cutting velocity and chip velocity is __________ shear velocity.$? |
| A. | Equal to |
| B. | Less than |
| C. | More than |
| D. | None of these |
| Answer» B. Less than | |
| 587. |
_Stellite preserves hardness up to a temperature of$? |
| A. | 350°C |
| B. | 500°C |
| C. | 900°C |
| D. | 1100°C |
| Answer» E. | |
| 588. |
_The cutting speed is minimum while machining _________ with a high speed steel tool.$? |
| A. | Cast iron |
| B. | Mild steel |
| C. | Brass |
| D. | Aluminium |
| Answer» B. Mild steel | |
| 589. |
_In an orthogonal cutting, the depth of cut is halved and the feed rate is double. If the chip thickness ratio is unaffected with the changed cutting conditions, the actual chip thickness will be$? |
| A. | Doubled |
| B. | Halved |
| C. | Quadrupled |
| D. | Unchanged |
| Answer» B. Halved | |
| 590. |
_If the cutting speed is increased, then the built-up-edge$? |
| A. | Becomes longer |
| B. | May or may not form |
| C. | Becomes smaller and finally does not form at all |
| D. | Has nothing to do with speed |
| Answer» D. Has nothing to do with speed | |
| 591. |
_A drill mainly used in drilling brass, copper or softer materials, is$? |
| A. | Flat drill |
| B. | Straight fluted drill |
| C. | Parallel shank twist drill |
| D. | Tapered shank twist drill |
| Answer» C. Parallel shank twist drill | |
| 592. |
_The lip angle of a single point tool is usually$? |
| A. | 20° to 40° |
| B. | 40° to 60° |
| C. | 60° to 80° |
| D. | None of these |
| Answer» D. None of these | |
| 593. |
_The negative rake is usually provided on$? |
| A. | High carbon steel tools |
| B. | High speed steel tools |
| C. | Cemented carbide tools |
| D. | All of these |
| Answer» D. All of these | |
| 594. |
_For turning small taper on long workpiece, the suitable method is$? |
| A. | By a form tool |
| B. | By setting over the tail stock |
| C. | By a taper turning attachment |
| D. | By swiveling the compound rest |
| Answer» C. By a taper turning attachment | |
| 595. |
_Side relief angle of a single point tool is the angle$? |
| A. | By which the face of the tool is inclined towards back |
| B. | By which the face of the tool is inclined sideways |
| C. | Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool |
| D. | Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base |
| Answer» D. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base | |
| 596. |
_In determining the various forces on the chip, Merchant assumed that the$? |
| A. | Cutting edge of the tool is sharp and it does not make any flank contact with the workpiece |
| B. | Only continuous chip without built-up-edge is produced |
| C. | Cutting velocity remains constant |
| D. | All of the above |
| Answer» E. | |
| 597. |
_The specific cutting energy used for establishing the machinability of the metal depends upon its$? |
| A. | Coefficient of friction |
| B. | Micro-structure |
| C. | Work hardening characteristics |
| D. | All of these |
| Answer» E. | |
| 598. |
_The machining of titanium is difficult due to$? |
| A. | High thermal conductivity of titanium |
| B. | Chemical reaction between tool and work |
| C. | Low tool-chip contact area |
| D. | None of these |
| Answer» D. None of these | |
| 599. |
_In oblique cutting system, the cutting edge of the tool$? |
| A. | May clear the width of the workpiece |
| B. | May or may not clear the width of the workpiece |
| C. | May not clear the width of the workpiece |
| D. | Should always clear the width of the workpiece |
| Answer» D. Should always clear the width of the workpiece | |
| 600. |
_The snag grinding is done$? |
| A. | To produce good surface finish and high degree of accuracy |
| B. | To remove considerable amount of metal without regard to accuracy of the finished surface |
| C. | To grind exterior cylindrical surfaces |
| D. | Any one of the above |
| Answer» C. To grind exterior cylindrical surfaces | |