McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 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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