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McqMate
501. |
In most high speed milling cutters, positive radial rake angle is |
A. | 10 - 15? |
B. | Less than 50? |
C. | 15 - 25? |
D. | 25 - 35? |
E. | 5 - 10? |
Answer» A. 10 - 15? |
502. |
A feeder gauge is used to check |
A. | Screw pitch |
B. | Surface roughness |
C. | Diameter of round objects |
D. | Unsymmetrical shape |
E. | Thickness of a clearance |
Answer» E. Thickness of a clearance |
503. |
Surface finish of a casting is affected by |
A. | fineness of sand |
B. | pattern finish |
C. | mould dressings |
D. | All of the above |
E. | Parting off |
Answer» D. All of the above |
504. |
In which of the following welding process the two pieces to be joined are over-lapped and placed between two electrodes? |
A. | Projection welding |
B. | Spot welding |
C. | Seam welding |
D. | Butt welding |
E. | Percussion welding |
Answer» B. Spot welding |
505. |
The range of temperature for soldering process is |
A. | 10?C to 50?C |
B. | 400?C to 650?C |
C. | 250?C to 400?C |
D. | 180?C to 250?C |
E. | 50?C to 100?C |
Answer» D. 180?C to 250?C |
506. |
The equipment used in pit for supply of air is |
A. | Centrifugal blower |
B. | Fan |
C. | Hand blower |
D. | Reciprocating air compressor |
E. | Air cylinder |
Answer» A. Centrifugal blower |
507. |
Material used for surface plate in fitting shop is |
A. | Mild steel |
C. | Parting off |
D. | Cast iron |
E. | Cast steel |
Answer» D. Cast iron |
508. |
During ultrasonic machining the metal removal is effected by |
A. | High frequency sound waves |
B. | High frequency eddy currents |
C. | Rubbing action between tool and work piece |
D. | Hammering action of abrasive particles |
E. | All of the above |
Answer» D. Hammering action of abrasive particles |
509. |
Solid punches are used for making holes having diameter equal to |
A. | Parting off |
B. | (2.5 - 10) mm |
C. | (4 - 6) mm |
E. | (1 - 3) mm |
Answer» B. (2.5 - 10) mm |
510. |
During arc welding the welding speed is too low, it is likely to result in |
A. | Excessive pilling up of weld metal |
B. | Overlapping without penetration edges |
C. | Wastage of electrode material |
D. | All of the above |
E. | None of the above |
Answer» D. All of the above |
511. |
In arc welding as the thickness of the material to be welded increases, the welding current requirement |
A. | Decreases |
B. | 8 mm |
C. | Does not change |
E. | Increases |
Answer» E. Increases |
512. |
Molasses in a foundry shop is used |
A. | For preventing rusting of castings |
B. | For use as a fuel in furnace |
C. | For making moulds |
D. | For core making |
E. | For cleaning castings |
Answer» D. For core making |
513. |
Prescribed maximum reading distance for a 100 mm dial is generally |
A. | 1.5 - 2.0 m |
B. | 4 - 5 m |
C. | 2.5 - 3 m |
D. | 1 - 1.5 m |
E. | 1 m |
Answer» C. 2.5 - 3 m |
514. |
In plasma arc machining the achievable tolerances are nearly |
A. | 0.01 |
B. | 1 |
C. | 25 |
D. | 250 |
E. | 0.1 |
Answer» D. 250 |
515. |
Which of the following material is cut at the highest cutting speed? |
A. | Copper |
B. | Alloy steel |
C. | Brass |
D. | Cast iron |
E. | High carbon steel |
Answer» C. Brass |
516. |
Weld spatter defect in welding is generally the result of |
A. | Using too high welding current |
B. | Using too low welding current |
C. | Low voltage |
D. | High voltage |
E. | None of the above |
Answer» A. Using too high welding current |
517. |
A 30 ton press means |
A. | The weight of die is 30 tons |
B. | The quantity of work produced in 8 hours will be 30 tons |
C. | The flywheel of the press weighs 30 tons |
D. | Gross weight of the press is 30 tons |
E. | The pressure exerted by slide is 30 tons |
Answer» E. The pressure exerted by slide is 30 tons |
518. |
For drills having diameter upto 12.7 mm. |
A. | Parallel shank is provided |
B. | Tapered shank is provided |
C. | Shank may be either of (A) or (B) |
E. | Bell metal |
Answer» A. Parallel shank is provided |
519. |
The machining allowance provided on patterns depends on |
A. | The material of the casting |
B. | Size and shape of casting |
C. | The material of the pattern |
D. | The composition of moulding sand |
E. | Temperature of molten material |
Answer» B. Size and shape of casting |
520. |
For the same capacity which of the following process has the lowest capital cost? |
A. | Abrasive jet machining |
B. | Chemical machining |
C. | Electron jet machining |
D. | Abrasive jet machining |
E. | Electro chemical machining |
Answer» D. Abrasive jet machining |
521. |
For centreless grinding the surface speed is |
A. | 1200 to 1500 metres per minute |
B. | 600 to 900 metres per minute |
C. | 500 to 600 metres per minute |
D. | 1500 to 1800 metres per minute |
E. | Parting off |
Answer» D. 1500 to 1800 metres per minute |
522. |
The rating of solder iron normally used for electronics work is |
A. | 1 kW to 2 kW |
B. | 750 to 1000 watts |
C. | 500 to 750 watts |
D. | 250 to 500 watts |
E. | 50 to 100 watts |
Answer» E. 50 to 100 watts |
523. |
The process of bringing out the lustre of metal usually by the use of cloth wheels is known as |
A. | Finishing |
B. | Buffing |
C. | Deburring |
D. | Burnishing |
E. | Carmetting |
Answer» B. Buffing |
524. |
During soldering |
A. | Borax is used a flux |
B. | Solder iron bit is red hot |
C. | Metal is heated from top as well as bottom |
D. | Arc is produced between solder iron and metal to be soldered |
E. | Joint area must be clean and close fitting |
Answer» E. Joint area must be clean and close fitting |
525. |
An optical gauge works on the principle of |
A. | Dispersion of light rays |
B. | Polarisation of light rays |
C. | Interference of light rays |
D. | Reflection of light rays |
E. | Refraction of light rays |
Answer» C. Interference of light rays |
526. |
Antioch is |
A. | A soft soldering process |
B. | A process for making porous moulds |
C. | An instrument for measurement of porosity of sand |
D. | A process for removal of excess solder from joints |
E. | A hand tool used for repairing moulds |
Answer» D. A process for removal of excess solder from joints |
527. |
A gate is the |
A. | Vent hole to allow for the hot gases to escape |
B. | Channel for the flow of excess molten material |
C. | Passage through which metal rises when the mould is filled |
D. | Passage through which metal is poured into the mould |
E. | Passage that finally leads molten metal from the runner into the mould cavity |
Answer» E. Passage that finally leads molten metal from the runner into the mould cavity |
528. |
Shrinkage of cast iron on solidification is nearly |
A. | 1% |
B. | 13% |
C. | Parting off |
D. | 5% |
E. | 6.50% |
Answer» A. 1% |
529. |
Machinability is affected by |
A. | tool geometry and material |
B. | cutting fluids |
C. | regidity of tool and machine |
D. | All of the above |
E. | Parting off |
Answer» D. All of the above |
530. |
Two 3 mm thick MS sheets are to be welded. Electrodes of 16, 12, 10 Nos, are available which one would you choose. |
A. | 16 |
B. | 12 |
C. | 10 |
D. | Any of the above |
E. | None of the above |
Answer» C. 10 |
531. |
In electro chemical machining the metal is removed by |
A. | Molecular transfer |
B. | Ionic bombardment |
C. | Collimated light rays |
D. | Ultraviolet rays |
E. | Dissolution in electrolyte solution |
Answer» E. Dissolution in electrolyte solution |
532. |
The property of sand due to which it clings to the sides of a moulding box, is called |
A. | permeability |
B. | adhesiveness |
C. | electron affinity |
D. | cohesiveness |
E. | Parting off |
Answer» B. adhesiveness |
533. |
Cutting speed in turning operation for aluminium is |
A. | 30 m/min |
B. | 15 m/min |
C. | 200 m/min |
D. | 400 m/min |
E. | 1000 m/min |
Answer» C. 200 m/min |
534. |
In a 32A 49-H 8V BE grinding wheel the grit size is represented by |
A. | H |
B. | 8 |
C. | 46 |
D. | BE |
E. | 32 |
Answer» C. 46 |
535. |
In theory of metal cutting the shear plane angle is the angle between |
A. | Shear plane and tool axis |
B. | Shear plane and job surface |
C. | Shear plane and tool surface |
D. | Shear plane and horizontal plane |
E. | Shear plane and verticalplane |
Answer» B. Shear plane and job surface |
536. |
Load cells are used |
A. | For the measurement of weight |
B. | For pile driving |
C. | For the measurement of strain |
D. | For the measurement of stress |
E. | For the measurement bearing capacity of soils |
Answer» A. For the measurement of weight |
537. |
A sinebar is used to measure |
A. | Surface roughness |
B. | Gear profiles |
C. | Internal tapers |
D. | External tapers |
E. | All of the above |
Answer» D. External tapers |
538. |
In a power hacksaw machine blade the number of teeth per inch are generally |
A. | 10 -- 12 |
B. | 4 -- 6 |
C. | 20 -- 24 |
D. | 12 -- 20 |
E. | 24 -- 32 |
Answer» B. 4 -- 6 |
539. |
Shanks of taper drills are provided standard taper known as |
A. | Jarno and Reed taper |
B. | Morse taper |
C. | Brown and Sharpe taper |
D. | Chapman taper |
E. | Sellers taper |
Answer» B. Morse taper |
540. |
A step cone pulley is provided on a lathe to |
A. | To reverse the spindle rotation |
B. | To drive the lead screw |
C. | For taper turning |
D. | Reduce power consumption |
E. | To change spindle speeds |
Answer» E. To change spindle speeds |
541. |
Usual thickness of a hacksaw blade is |
A. | 1 mm |
B. | Parting off |
C. | 0.7 mm |
E. | 0.4 mm |
Answer» C. 0.7 mm |
542. |
For ultrasonic welding the thickness of metal is usually restricted to |
A. | 15 mm |
B. | 10 mm |
C. | 25 mm |
D. | 6 mm |
E. | 3 mm |
Answer» E. 3 mm |
543. |
Lathe bed is usually made of |
A. | Cast iron |
B. | Satellite |
C. | Alloy steel |
D. | Mild steel |
E. | High speed steel |
Answer» A. Cast iron |
544. |
Plate liners used between the vice-jaw and the work piece are made of |
A. | Copper or Tin |
B. | Mild steel |
C. | Parting off |
E. | Hard steel |
Answer» A. Copper or Tin |
545. |
In case of grey cast iron the volumetric shrinkage is around |
A. | 15% |
B. | 2% |
C. | 10% |
D. | 25% |
E. | 20% |
Answer» B. 2% |
546. |
For the soldering of galvanized iron the flux used is |
A. | Hydrochloric acid |
B. | Zinc oxide |
C. | Muriatic acid |
D. | Ammonium chloride |
E. | None of the above |
Answer» C. Muriatic acid |
547. |
Automobile gears are generally manufactured by |
A. | Extrusion |
B. | Die casting |
C. | Stamping |
D. | Rolling |
E. | Hobbing |
Answer» E. Hobbing |
548. |
Which is not a part of shaper? |
A. | Vernier caliper |
B. | Table |
C. | Cross slide |
D. | Ram |
E. | Tool head |
Answer» C. Cross slide |
549. |
A bleed type relay is generally used in |
A. | Pneumatic systems |
B. | Electrical systems |
C. | Electronic systems |
D. | Mechanical systems |
E. | None of the above |
Answer» A. Pneumatic systems |
550. |
For aluminum casting to be turned on a lathe, which chuck would be preferred? |
A. | Four jaw independent chuck |
B. | Pneumatic chuck |
C. | Collet chuck |
D. | Three jaw self-centring chuck |
E. | Face plane |
Answer» A. Four jaw independent chuck |
551. |
High helix drills are used for deep hole drilling in |
A. | Aluminium |
B. | Plastics |
C. | Rubber (hard) |
D. | Marble |
E. | Bakelite |
Answer» A. Aluminium |
552. |
Choose incorrect statement. With increasing cutting speed |
A. | machining cost decreases |
B. | tool cost increases |
C. | total cost decreases |
D. | None of the above |
E. | Parting off |
Answer» C. total cost decreases |
553. |
Panes are used |
A. | Make the timber surfaces uniform and smooth |
B. | Making holes in the Timber piece |
C. | Chamfering the edges |
D. | Parting off |
E. | Measure the dimensions |
Answer» A. Make the timber surfaces uniform and smooth |
554. |
The main constituent of moulding sand is |
A. | Hydrocarbons |
B. | Clay |
C. | Silica |
D. | Graphite |
E. | Carbon |
Answer» C. Silica |
555. |
An accurate lathe in India is identified as |
A. | Mark I |
B. | Grade I |
C. | Precision I |
D. | Agmark I |
E. | Accurate I |
Answer» B. Grade I |
556. |
Indexing for 107 divisions can be done by |
A. | Angular indexing |
B. | Simple indexing |
C. | Differential indexing |
D. | Compound indexing |
E. | Compound differential indexing |
Answer» C. Differential indexing |
557. |
Which of the following process provides continuous welds between two sheets? |
A. | Projection welding |
B. | Spot welding |
C. | Seam welding |
D. | All of the above |
E. | Parting off |
Answer» C. Seam welding |
558. |
In thermit welding, heat is generated by |
A. | Combustion of gases |
B. | Electric arc |
C. | Reaction of oxygen with metal |
D. | Chemical reaction involving finely divided aluminium and iron oxide |
E. | None of the above |
Answer» D. Chemical reaction involving finely divided aluminium and iron oxide |
559. |
The common ratio for geometrical speeds in geometrical progression lies between |
A. | 2.0 to 5.0 |
B. | 5.0 to 10.0 |
C. | 1.0 to 2.0 |
D. | 0.1 to 0.5 |
E. | 0.5 to 0.9 |
Answer» C. 1.0 to 2.0 |
560. |
Wipping is the process of |
A. | Cleaning the welded surface after the welding operation is over |
B. | Applying flux during welding process |
C. | Connecting load pipes by soldering alloy |
D. | Low temperature welding |
E. | None of the above |
Answer» C. Connecting load pipes by soldering alloy |
561. |
The term CLA (Centre Line Average) is used in connection with |
A. | Surface hardness |
B. | Stresses in a component |
C. | Average speed of a gear |
D. | Surface finish |
E. | Sharpness of a cutting tool |
Answer» D. Surface finish |
562. |
A piercing operation in which the entire contour is not cut, is known as |
A. | lancing |
B. | Parting off |
C. | notching |
D. | broaching |
E. | bumishing |
Answer» A. lancing |
563. |
Which variety of copper has the highest purity? |
A. | Best select copper |
B. | Parting off |
C. | High conductivity copper |
D. | Arsenical copper |
E. | Deoxidised copper |
Answer» C. High conductivity copper |
564. |
Magna flux is |
A. | An instrument using ultrasonic techniques for crack detection |
B. | An instrument used for precision measurements using magnetism and flux density |
C. | An instrument used for inspection of weldings |
D. | A non-destructive inspection technique that makes use of magnetic field and magnetic particles to locate flaw in materials |
E. | Intensity of X-rays required corresponding to thickness of a job for determination of defects. |
Answer» D. A non-destructive inspection technique that makes use of magnetic field and magnetic particles to locate flaw in materials |
565. |
A mandrel is |
A. | Auxiliary chuck used on lathe for holding small loads |
B. | None of above |
C. | A tapered gauge used for inspection of tapered holes |
D. | Is used in lathe work to hold castings |
E. | A slightly tapered hardened steel shaft that supports works which cannot be supported otherwise |
Answer» C. A tapered gauge used for inspection of tapered holes |
566. |
During soldering operation, the main function of solder iron is to |
A. | Heat the metals to be jointed |
B. | Heat the solder |
C. | Heat the flux |
D. | Remove impurities |
E. | All of the above |
Answer» B. Heat the solder |
567. |
Dielectric is essentially required in |
A. | CLM process |
B. | PMF process |
C. | EMP process |
D. | EDM process |
E. | ECM process |
Answer» D. EDM process |
568. |
Core chaplet is |
A. | used to provide a supprt to the core |
B. | a surface coating on core so that core material does not fuse with the casting |
C. | Parting off |
D. | a core dressing operation |
E. | used to make core surface smooth |
Answer» A. used to provide a supprt to the core |
569. |
Drilling operation is an example of |
A. | Multipoint cutting |
B. | Simple cutting |
C. | Oblique cutting |
D. | Orthogonal cutting |
E. | None of the above |
Answer» C. Oblique cutting |
570. |
While machining a brass casting on a lathe, the type of chuck used is |
A. | Face plate |
B. | Collect chuck |
C. | Four jaw chuck |
D. | Three jaw chuck |
E. | Magnetic chuck |
Answer» C. Four jaw chuck |
571. |
For making complicated contours on carbide tools, which of the following process is preferred? |
A. | Electro chemical milling |
B. | Laser machining |
C. | Plasma arc machining |
D. | Electro discharge machining |
E. | Diamond tool machining |
Answer» D. Electro discharge machining |
572. |
For the same capacity which of the following process has the highest capital cost? |
A. | Laser beam machining |
B. | Electro chemical machining |
C. | Electro discharge machining |
D. | Abrasive jet machining |
E. | Plasma arc machining |
Answer» B. Electro chemical machining |
573. |
An ideal tool material is the one which |
A. | has very long life |
B. | has same life at all cutting speeds |
C. | produces no heat during cutting |
D. | None of the above |
E. | Parting off |
Answer» B. has same life at all cutting speeds |
574. |
A hot chisel is one which is |
A. | Spherical surfaces |
B. | None of these |
C. | Used to cut cold materials |
D. | Used to cut red hot materials |
E. | Red hot |
Answer» D. Used to cut red hot materials |
575. |
Chisels used for metal cutting are |
A. | Hardened |
B. | Annealed |
C. | Hardened and tempered |
D. | Annealed, hardened and tempered |
E. | None of the above |
Answer» D. Annealed, hardened and tempered |
576. |
Permissible percentage of moisture in dry woods for pattern making is |
A. | Upto 25 percent |
B. | 1 - 2 percent |
C. | Upto 15 percent |
D. | 2 - 5 percent |
E. | Zero percent |
Answer» C. Upto 15 percent |
577. |
When silicon is added in the cast iron 13-17 percent is given an alloy which is |
A. | It is not possible to have such high percentage of silicon |
B. | Very soft |
C. | Easily machinable |
D. | Acid and corrosion resistant |
E. | Powder casted |
Answer» C. Easily machinable |
578. |
Which of the following statements correct? |
A. | Rockwell scale B in used for hard metals |
B. | Rockwell scale C is used for hard metals |
C. | Rockwell scale C is used for soft metals |
D. | Rockwell scale A is used for hard metals |
E. | None of the above |
Answer» B. Rockwell scale C is used for hard metals |
579. |
The back rake angle of HSS single point cutting too will be zero while machining |
A. | Hard materials |
B. | Cast iron with high carbon percentage |
C. | Mild steel without collant |
D. | Brass |
E. | Brittle materials |
Answer» D. Brass |
580. |
Which of the following is located within the bolster? |
A. | Cushion |
B. | Ram |
C. | Bed plate |
D. | All of the above |
E. | Parting off |
Answer» A. Cushion |
581. |
Which of the following is not a fine finishing operation? |
A. | Grinding |
B. | Honing |
C. | Buffing |
D. | Lapping |
E. | Tumbling |
Answer» E. Tumbling |
582. |
Electronic components are often joined by |
A. | Sport welding |
B. | Seam welding |
C. | Brazing |
D. | Adhesive |
E. | Soldering |
Answer» E. Soldering |
583. |
Two 12 mm plates are to are welded with the help of a 8 gauge electrode. What will be the current requirement |
A. | 75 amps |
B. | 100 amps |
C. | 125 amps |
D. | 130 amps |
E. | 150 amps |
Answer» E. 150 amps |
584. |
In which type of welding molten metal is poured for joining the metals |
A. | Gas welding |
B. | Arc welding |
C. | MIG |
D. | Thermit welding |
E. | TIG |
Answer» D. Thermit welding |
585. |
The tool signature comprises |
A. | 6 elements |
B. | 7 elements |
C. | 5 elements |
D. | 8 elements |
E. | 9 elements |
Answer» B. 7 elements |
586. |
Gear cutters are specified by |
A. | cutter number |
B. | cutter diameter |
C. | no. of teeth |
D. | Any of the above |
E. | Parting off |
Answer» A. cutter number |
587. |
While specifying a grinding wheel, which of the following is the optional specification? |
A. | Structure |
B. | Gram size |
C. | Grade |
D. | Type of bond |
E. | Parting off |
Answer» A. Structure |
588. |
The value of coefficient of friction expected in case of brake lining of steel wheel drum is |
A. | 0.1 to 0.3 |
B. | 1 |
C. | 0.1 |
D. | 0.8 to 0.95 |
E. | 0.4 to 0.5 |
Answer» E. 0.4 to 0.5 |
589. |
Steady rest is |
A. | Used during thready cutting only |
B. | Used when a lathe is not provided with foundations |
C. | Used while turning unsymmetrical objects |
D. | An additional support provided for long jobs |
E. | Used when a lathe is subject to vibrations |
Answer» D. An additional support provided for long jobs |
590. |
Sintered tungsten carbides can be machined by |
A. | Electro machining process |
B. | Explosive forming |
C. | Grinding only |
D. | Diamond tools only |
E. | Conventional processes |
Answer» A. Electro machining process |
591. |
The major function performed by information handling system is |
A. | Automatic measuring |
B. | Automatic logging |
C. | Alarm monitoring |
D. | Data and alarm scanning |
E. | All of the above |
Answer» C. Alarm monitoring |
592. |
Carbon content of grey iron is generally |
A. | 1 - 2 percent |
B. | 3-3.5 percent |
C. | 2.5-3 percent |
D. | 4.5 percent |
E. | 2-2.5 percent |
Answer» B. 3-3.5 percent |
593. |
The clearance between the tips of a spark plug is checked by |
A. | Vernier caliper |
B. | Wire gauge |
C. | Feeler gauge |
D. | Delatometer |
E. | None of the above |
Answer» C. Feeler gauge |
594. |
Tumbling is done to |
A. | To plate the surface |
B. | Clean the surface of small parts |
C. | To break the material into pieces |
D. | Stress relieve the components |
E. | Get surface finish |
Answer» B. Clean the surface of small parts |
595. |
Which of the following material is cut at the lowest cutting speed? |
A. | Aluminium |
B. | Brass |
C. | Mild steel |
D. | Copper |
E. | High carbon steel |
Answer» E. High carbon steel |
596. |
The included angle of a lathe centre is generally |
A. | 45? |
B. | 30? |
C. | 60? |
D. | 22 |
E. | 15? |
Answer» C. 60? |
597. |
Which one of the following materials will have highest cutting speed? |
A. | Bronze |
B. | Aluminium |
C. | Brass |
D. | Cast iron |
E. | Tool steel |
Answer» B. Aluminium |
598. |
Hack-saw blades having the number of teeth as given below are available. Which one would you chose for cutting brass |
A. | 18 teeth per inch |
B. | 14 teeth per inch |
C. | 31 teeth per inch |
D. | 40 teeth per inch |
E. | 24 teeth per inch |
Answer» E. 24 teeth per inch |
599. |
Gang milling is |
A. | Process in which two or more cutters are used simultangeously |
B. | High speed milling |
C. | Milling operation combined with turning |
D. | Process of cutting gears |
E. | Milling process for generating hexagonal surfaces |
Answer» A. Process in which two or more cutters are used simultangeously |
600. |
Which machine can be used for grinding the ball bearing outer races |
A. | Surface grinding machine |
B. | Magnetic chuck grinding machine |
C. | Universal grinding machine |
D. | Centreless grinding machine |
E. | Cylindrical grinding machine |
Answer» D. Centreless grinding machine |
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