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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