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.
| 401. |
*/*_In transverse grinding? |
| A. | The work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face |
| B. | The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face |
| C. | The work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face |
| D. | The work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face |
| Answer» B. The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face | |
| 402. |
*/*_A jig is defined as a device which? |
| A. | Holds and locates a workpiece and guides and controls one or more cutting tools |
| B. | Holds and locates a workpiece during an inspection or for a manufacturing operation |
| C. | Is used to check the accuracy of workpiece |
| D. | All of the above |
| Answer» B. Holds and locates a workpiece during an inspection or for a manufacturing operation | |
| 403. |
*/*_In a plain milling machine, the table can be moved? |
| A. | Longitudinally |
| B. | Crosswise |
| C. | Vertically |
| D. | All of these |
| Answer» E. | |
| 404. |
*/*_The tool life is said to be over if? |
| A. | Poor surface finish is obtained |
| B. | There is sudden increase in cutting forces and power consumption |
| C. | Overheating and fuming due to heat of friction starts |
| D. | All of the above |
| Answer» E. | |
| 405. |
*/*_Low helix angle drills are preferred for drilling holes in? |
| A. | Plastics |
| B. | Copper |
| C. | Cast steel |
| D. | Carbon steel |
| Answer» B. Copper | |
| 406. |
*/*_What is the type of welding defect is caused due to stresses on heating and cooling called?? |
| A. | Incomplete penetration |
| B. | Shrinkage void |
| C. | Slag Entrapment (Inclusions) |
| D. | Incomplete fusion |
| Answer» C. Slag Entrapment (Inclusions) | |
| 407. |
*/*_In electrochemical machining, the gap between the tool and work is kept as? |
| A. | 0.1 mm |
| B. | 0.4 mm |
| C. | 0.35 mm |
| D. | 0.75 mm |
| Answer» E. | |
| 408. |
*/*_Friction at the tool-chip interface can be reduced by? |
| A. | Decreasing the rake angle |
| B. | Increasing the depth of cut |
| C. | Decreasing the cutting speed |
| D. | Increasing the cutting speed |
| Answer» E. | |
| 409. |
*/*_As tool and work are not in contact in EDM process? |
| A. | No relative motion occurs between them |
| B. | No wear of tool occurs |
| C. | No power is consumed during metal cutting |
| D. | No force between tool and work occurs |
| Answer» E. | |
| 410. |
*/*_Larger end cutting edge angle _________ tool life.? |
| A. | Increases |
| B. | Decreases |
| C. | Does not effect |
| D. | None of these |
| Answer» B. Decreases | |
| 411. |
*/*_For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of? |
| A. | 50°C |
| B. | 100°C |
| C. | 175°C |
| D. | 275°C |
| Answer» C. 175¬¨‚àûC | |
| 412. |
*/*_The material property which depends only on the basic crystal structure is? |
| A. | Fatigue strength |
| B. | Work hardening |
| C. | Fracture strength |
| D. | Elastic constant |
| Answer» D. Elastic constant | |
| 413. |
*/*_Chemical milling operation is performed? |
| A. | On universal milling machine |
| B. | On plain milling machine |
| C. | In a tank containing an etching solution |
| D. | Any one of these |
| Answer» D. Any one of these | |
| 414. |
*/*_For harder alloy steel, the point angle of the drill is kept? |
| A. | Equal to 118° |
| B. | Less than 118° |
| C. | More than 118° |
| D. | Any one of these |
| Answer» D. Any one of these | |
| 415. |
*/*_Which of the following parameters influence the axial feed rate in centerless grinding?? |
| A. | Regulating wheel diameter |
| B. | Speed of the regulating wheel |
| C. | Angle between the axes of grinding and regulating wheels |
| D. | All of the above |
| Answer» E. | |
| 416. |
*/*_In drilling operation, the metal is removed by? |
| A. | Shearing |
| B. | Extrusion |
| C. | Shearing and extrusion |
| D. | Shearing and compression |
| Answer» D. Shearing and compression | |
| 417. |
*/*_What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?? |
| A. | Thermit welding |
| B. | Electroslag welding |
| C. | Resistance welding |
| D. | Submerged arc Welding |
| Answer» D. Submerged arc Welding | |
| 418. |
*/*_Which one among the following welding processes uses non-consumable electrode?? |
| A. | Gas metal arc welding |
| B. | Submerged arc welding |
| C. | Gas tungsten arc welding |
| D. | Flux coated arc welding |
| Answer» D. Flux coated arc welding | |
| 419. |
*/*_Which of the following statement is correct in regard to centreless grinding?? |
| A. | The workpiece is supported throughout its entire length as grinding takes place |
| B. | It is a continuous process and adopted for production work |
| C. | It requires no holding device for the work |
| D. | All of the above |
| Answer» E. | |
| 420. |
*/*_The factor responsible for the formation of continuous chips with built up edge is? |
| A. | Low cutting speed and large rake angle |
| B. | Low cutting speed and small rake angle |
| C. | High cutting speed and large rake angle |
| D. | High cutting speed and small rake angle |
| Answer» C. High cutting speed and large rake angle | |
| 421. |
*/*_The size of abrasive grain required in a grinding wheel depends upon the? |
| A. | Amount of material to be removed |
| B. | Hardness of material being ground |
| C. | Finish desired |
| D. | All of these |
| Answer» C. Finish desired | |
| 422. |
*/*_The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called? |
| A. | Helix or rake angle |
| B. | Point angle |
| C. | Chisel edge angle |
| D. | Lip clearance angle |
| Answer» D. Lip clearance angle | |
| 423. |
*/*_Which of the following operation is first performed?? |
| A. | Spot facing |
| B. | Boring |
| C. | Tapping |
| D. | Drilling |
| Answer» C. Tapping | |
| 424. |
*/*_The operation of making a cone-shaped enlargement of the end of a hole is known as? |
| A. | Counter-sinking |
| B. | Counter-boring |
| C. | Trepanning |
| D. | Spot facing |
| Answer» B. Counter-boring | |
| 425. |
*/*_Trepanning is performed for? |
| A. | Finishing a drilled hole |
| B. | Producing a large hole without drilling |
| C. | Truing a hole for alignment |
| D. | Enlarging a drilled hole |
| Answer» C. Truing a hole for alignment | |
| 426. |
*/*_When the end of a tap is tapered for about three or four threads, it is known as a? |
| A. | Taper tap |
| B. | Bottoming tap |
| C. | Second tap |
| D. | None of these |
| Answer» D. None of these | |
| 427. |
*/*_In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become? |
| A. | Half |
| B. | Two times |
| C. | Eight times |
| D. | Sixteen times |
| Answer» E. | |
| 428. |
*/*_The high cutting speed and large rake angle of the tool will result in the formation of? |
| A. | Continuous chips |
| B. | Discontinuous chip |
| C. | Continuous chips with built up edge |
| D. | None of these |
| Answer» B. Discontinuous chip | |
| 429. |
*/*_In which of the following machine, the work remains stationary and the tool is rotated?? |
| A. | Vertical boring machine |
| B. | Horizontal boring machine |
| C. | Precision boring machine |
| D. | Jig boring machine |
| Answer» C. Precision boring machine | |
| 430. |
*/*_Which of the following operations can be performed with milling cutters?? |
| A. | Cutting key ways on shafts |
| B. | Cutting external screw threads |
| C. | Cutting teeth of spur gears |
| D. | All of these |
| Answer» E. | |
| 431. |
*/*_A tool used to withdraw a drill from the sleeve is called? |
| A. | Drill remover |
| B. | Drill puller |
| C. | Drift |
| D. | Drill drawer |
| Answer» D. Drill drawer | |
| 432. |
*/*_The tool life is affected by? |
| A. | Depth of cut |
| B. | Cutting speed |
| C. | Feed |
| D. | All of these |
| Answer» E. | |
| 433. |
*/*_The chuck preferred for quick setting and accurate centering of a job is? |
| A. | Four jaw independent chuck |
| B. | Collect chuck |
| C. | Three jaw universal chuck |
| D. | Magnetic chuck |
| Answer» C. Three jaw universal chuck | |
| 434. |
*/*_In DC arc welding, if leads are arranged in work as Negative pole of the welding arc and electrode as Positive pole of the welding arc, the arrangement is known as? |
| A. | Fusion |
| B. | Reverse polarity |
| C. | Forward welding |
| D. | Direct polarity |
| Answer» C. Forward welding | |
| 435. |
*/*_What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?? |
| A. | Argon H‚ÇÇ |
| B. | Argon CO‚ÇÇ |
| C. | Argon Helium |
| D. | Helium |
| Answer» C. Argon Helium | |
| 436. |
*/*_The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.? |
| A. | Equal to |
| B. | Less than |
| C. | More than |
| D. | None of these |
| Answer» B. Less than | |
| 437. |
*/*_The tool made of cemented carbide wear out faster at? |
| A. | Slow speeds |
| B. | Medium speeds |
| C. | Fast speeds |
| D. | Very fast speeds |
| Answer» B. Medium speeds | |
| 438. |
*/*_Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance to be 200 μm and current flow time of 0.2 second, heat generated during the process will be? |
| A. | 0.2 Joule |
| B. | 1 Joule |
| C. | 5 Joule |
| D. | 1000 Joule |
| Answer» E. | |
| 439. |
*/*_The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)? |
| A. | VnT = C |
| B. | VTn = C |
| C. | Vn/T = C |
| D. | V/Tn = C |
| Answer» C. Vn/T = C | |
| 440. |
*/*_Ceramic tools are fixed to tool body by? |
| A. | Soldering |
| B. | Brazing |
| C. | Welding |
| D. | Clamping |
| Answer» C. Welding | |
| 441. |
*/*_The relief or clearance at the cutting edge of a flat drill varies from? |
| A. | 3° to 8° |
| B. | 20° to 30° |
| C. | 60° to 90° |
| D. | 90° to 120° |
| Answer» B. 20¬¨‚àû to 30¬¨‚àû | |
| 442. |
*/*_If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as? |
| A. | ARC |
| B. | Short ARC |
| C. | ARC length |
| D. | ARC blow |
| Answer» C. ARC length | |
| 443. |
*/*_When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.? |
| A. | Single riveted |
| B. | Double riveted |
| C. | Both (A) and (B) |
| D. | None of these |
| Answer» C. Both (A) and (B) | |
| 444. |
*/*_The increase in depth of cut and feed rate _________ surface finish.? |
| A. | Improves |
| B. | Deteriorates |
| C. | Does not effect |
| D. | None of these |
| Answer» C. Does not effect | |
| 445. |
*/*_A taper tap has? |
| A. | Its end tapered for about three or four threads |
| B. | Its end tapered for about eight or ten threads |
| C. | Full threads for the whole of its length |
| D. | None of the above |
| Answer» C. Full threads for the whole of its length | |
| 446. |
*/*_The ductile materials, during machining, produce? |
| A. | Continuous chips |
| B. | Discontinuous chips |
| C. | Continuous chips with built up edge |
| D. | Either (A) or (C) |
| Answer» E. | |
| 447. |
*/*_Negative rakes are used for? |
| A. | Carbide tools |
| B. | Heavy loads |
| C. | Harder materials |
| D. | All of these |
| Answer» E. | |
| 448. |
*/*_A shaft has a dimension, œÜ9 +0.025‚Å∫‚Å∞‚à ô‚Å∞‚Å∞‚Åπ, the respective values of fundamental deviation and tolerance are? |
| A. | ‚à í0.025, ¬±0.008 |
| B. | ‚à í0.025, 0.016 |
| C. | ‚à í0.009, ¬± 0.008 |
| D. | ‚à í0.009, 0.016 |
| Answer» E. | |
| 449. |
*/*_When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degrees of freedom that are restricted is? |
| A. | 7 |
| B. | 8 |
| C. | 9 |
| D. | 10 |
| Answer» D. 10 | |
| 450. |
*/*_The swing diameter over the bed is ________ the height of the centre measured from the bed of the lathe.? |
| A. | Equal to |
| B. | Twice |
| C. | Thrice |
| D. | One-half |
| Answer» C. Thrice | |