McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 601. |
Which one of the following methods be used for turning internal tapers only? |
| A. | Taper attachment |
| B. | Reamer |
| C. | Form tool |
| D. | Compound rest |
| E. | Tailstock offset |
| Answer» A. Taper attachment | |
| 602. |
Folding process of edges of the sheet metal is termed as |
| B. | Bending |
| C. | Seaming |
| D. | Hemming |
| E. | Parting off |
| Answer» D. Hemming | |
| 603. |
In which operation on a work piece on lathe the spindle speed with be least? |
| A. | Plain turning |
| B. | Thread cutting |
| C. | Taper turning |
| D. | Finishing |
| E. | Parting off |
| Answer» B. Thread cutting | |
| 604. |
Specific temperature for the international Prototype metre is |
| A. | Atmospheric |
| B. | Melting point of ice |
| C. | 0?F |
| D. | 0?K |
| E. | 0?C |
| Answer» E. 0?C | |
| 605. |
The speed of grinding wheel is limited by |
| A. | type of bond |
| B. | grinding operation |
| C. | rigidity of grinding machine |
| D. | All of the above |
| E. | Parting off |
| Answer» D. All of the above | |
| 606. |
Which of the following is not a shearing process? |
| A. | Notching |
| B. | Perforating |
| C. | Lancing |
| D. | Blanking |
| E. | Embossing |
| Answer» E. Embossing | |
| 607. |
For which of the following material TIG welding is preferred? |
| A. | Gold |
| B. | Stainless steel |
| C. | Mild steel |
| D. | Silver |
| E. | Aluminium |
| Answer» E. Aluminium | |
| 608. |
Taper gererally used in lathes now-a-days is |
| A. | Jarno |
| B. | Morse |
| C. | Brown and sharpe |
| D. | None of above |
| E. | Parkinson |
| Answer» B. Morse | |
| 609. |
Point angle of 90? is used on drills for drilling on |
| A. | Parting off |
| B. | brass |
| C. | bakelite |
| D. | very hard materials |
| E. | aluminium |
| Answer» C. bakelite | |
| 610. |
In which of the following process hydraulic fluid acts as transfer media? |
| A. | Ultrasonic machining |
| B. | Electron beam machining |
| C. | Water jet machining |
| D. | Iron beam machining |
| E. | Electro discharge machining |
| Answer» C. Water jet machining | |
| 611. |
The pouring temperature for grey cast iron is |
| A. | 2350?C |
| B. | 1655?C |
| C. | 1850?C |
| D. | 1400?C |
| E. | 1000?C |
| Answer» D. 1400?C | |
| 612. |
The surface accuracy of slip gauges is of the order of |
| A. | 0.02 |
| B. | 0.0002 |
| C. | 0.002 |
| D. | 0.2 |
| E. | 0.00002 |
| Answer» A. 0.02 | |
| 613. |
Inside and outside diameters of a thin tube are to be measured. Only one of the following tools is to be selected. Which one would you choose? |
| A. | Outside caliper |
| B. | Odd-leg caliper |
| C. | Inside caliper |
| D. | Trammel |
| E. | Vernier caliper |
| Answer» E. Vernier caliper | |
| 614. |
The process for producing smooth surfaces by plastically moving away the raised micro-irregularities on the surface and passing it into the microcavities is known as |
| A. | Buffing |
| B. | Super finishing |
| C. | Burnishing |
| D. | Tumbling |
| E. | Polishing |
| Answer» C. Burnishing | |
| 615. |
In machine tools normally spindle speeds vary in |
| A. | Arithmetical progression |
| B. | Geometrical progression |
| C. | Exponential progression |
| D. | Logarithmic progression |
| E. | None of the above |
| Answer» B. Geometrical progression | |
| 616. |
The length of a hacksaw blade is measured from |
| A. | Centre of hole at one end to the centre of hole at the other end |
| B. | None of these |
| C. | The formula L = 16 x width |
| D. | Extreme one to-extreme end |
| E. | 1830 rpm |
| Answer» A. Centre of hole at one end to the centre of hole at the other end | |
| 617. |
The usual ratio of forward and return stroke in shaper is |
| A. | 2 ; 3 |
| B. | 3 ; 2 |
| C. | 4 ; 3 |
| D. | 1 ; 2 |
| E. | 3 ; 4 |
| Answer» B. 3 ; 2 | |
| 618. |
The machining allowance provided on pattern depends on |
| A. | The casting orientation |
| B. | Size and shape of casting |
| C. | Degree of accuracy required |
| D. | All of the above |
| E. | None of above |
| Answer» D. All of the above | |
| 619. |
Cutting speed in turning operations is maximum in case of |
| A. | Cast iron |
| B. | Mild steel |
| C. | Aluminium |
| D. | Bronze |
| E. | Brass |
| Answer» C. Aluminium | |
| 620. |
Which of the following is dead soft steel? |
| A. | Parting off |
| B. | C 45 |
| C. | 11 Mn 2 |
| D. | C 04 |
| E. | 33 Mo 55. |
| Answer» D. C 04 | |
| 621. |
As per ISS a steel specified as T 75 W 18 Co 10 Cr 4V2 will not have (as constituent) |
| A. | Cobalt |
| B. | Chromium |
| C. | Vanadium |
| D. | Electrical stampings |
| E. | Copper |
| Answer» E. Copper | |
| 622. |
The limitation of electronically operated automatic control system is |
| A. | Considerable time lag |
| B. | Poor accuracy |
| C. | Complicated control response |
| D. | It requires eloborate protection in hazardous locations |
| E. | Serious effect of ambient conduction |
| Answer» D. It requires eloborate protection in hazardous locations | |
| 623. |
The equal percentage characteristic of a valve is |
| A. | Uniform flow rate |
| B. | Flow rate proportional to valve lift |
| C. | Each increment of plug movement produces a change in flow which is proportional to the amount flowing before the change occurred |
| D. | Percentage increase in flow is equal to the percentage increase in lift |
| E. | The flow rate before the plug movement is equal to the flow rate after the movement |
| Answer» C. Each increment of plug movement produces a change in flow which is proportional to the amount flowing before the change occurred | |
| 624. |
Mould washes are used to produce |
| A. | castings with different hardnesses at different locations |
| B. | smooth surface on castings |
| C. | castings with symmetrical sections |
| D. | None of the above |
| E. | Parting off |
| Answer» B. smooth surface on castings | |
| 625. |
Two 20 mm thick plates are to be gas welded. What size of welding rod should be selected out of the following rods available? |
| A. | 6 mm |
| B. | 4.5 mm |
| C. | 1.5 mm |
| D. | 8 mm |
| E. | 3 mm |
| Answer» A. 6 mm | |
| 626. |
In Rockwell hardness test the hardness is measured by |
| A. | The width of depression |
| B. | The depth of depression |
| C. | Diameter of depression |
| D. | None of the above |
| E. | None of the above |
| Answer» B. The depth of depression | |
| 627. |
The cutting edges of a twist drill are known as |
| A. | Flanks |
| B. | Wedges |
| C. | Flutes |
| D. | Lips |
| E. | None of the above |
| Answer» D. Lips | |
| 628. |
Which of the following is the best method for drilling, 1 mm hole in glass? |
| A. | Laser drilling |
| B. | Garbide tipped drilling |
| C. | Plasma arc drilling |
| D. | Ultrasonic machining |
| E. | Electron beam drilling |
| Answer» D. Ultrasonic machining | |
| 629. |
While drilling on marble, the point angle should be |
| A. | 10? |
| B. | 120? |
| C. | 80? |
| D. | 112? |
| E. | 118? |
| Answer» C. 80? | |
| 630. |
Glazing of grinding wheels is easily identified by |
| A. | Shiny sppearance on the face of the wheel |
| B. | black spots on the grinding face |
| C. | formation of cavities on the wheel |
| D. | None of the above |
| E. | Parting off |
| Answer» A. Shiny sppearance on the face of the wheel | |
| 631. |
Match plate pattern is used in |
| A. | Greens and moulding |
| B. | Pillar moulding |
| C. | Bench moulding |
| D. | Machine moulding |
| E. | Pit moulding |
| Answer» D. Machine moulding | |
| 632. |
Generally rubber, leather, fibre etc. are blanked by the process of |
| A. | drinking |
| B. | broaching |
| C. | notching |
| D. | lancing |
| E. | Parting off |
| Answer» A. drinking | |
| 633. |
A fly cutter is used on |
| A. | Metal spinning lathe |
| B. | Capstan lathe |
| C. | Lathe |
| D. | Shaper |
| E. | Milling machines |
| Answer» E. Milling machines | |
| 634. |
Draft or taper allowance in patterns is provided on |
| A. | All vertical surfaces of the pattern |
| B. | All round surfaces of pattern |
| C. | All sides of patterns |
| D. | All corners of the pattern |
| E. | All horizontal surfaces of the pattern |
| Answer» A. All vertical surfaces of the pattern | |
| 635. |
CO2 sand is used |
| A. | for low temperature alloys |
| B. | for non-ferrous castings |
| C. | Parting off |
| D. | for producing hard surface around the mould |
| E. | for mass production of castings |
| Answer» D. for producing hard surface around the mould | |
| 636. |
Which of the following is an interference fit? |
| A. | Push fit |
| B. | Shrink fit |
| C. | Sliding fit |
| D. | Running fit |
| E. | Light keying fit |
| Answer» A. Push fit | |
| 637. |
The advantage of electro chemical machining is |
| A. | There is virtually no wear of the tool |
| B. | No burrs are produced |
| C. | The rate of metal removal does not depend on the physical properties of the metal |
| D. | The surface produced is free from mechanical stresses |
| E. | All of the above |
| Answer» E. All of the above | |
| 638. |
Brown and sharpe taper is generally used in |
| A. | Lathes |
| B. | Shapers |
| C. | Drills |
| D. | Milling machines |
| E. | Broaching machines |
| Answer» D. Milling machines | |
| 639. |
A master gauge is |
| A. | Used by all mechanics |
| B. | A gauge used by experienced technician |
| C. | None of above |
| D. | Used by masters |
| E. | A standard gauge for checking accuracy of gauges used on shop floors |
| Answer» A. Used by all mechanics | |
| 640. |
Goose neck tools are used on |
| A. | Grinders |
| B. | Planers |
| C. | Capstan lathes |
| D. | Wood working lathes |
| E. | Milling machines |
| Answer» B. Planers | |
| 641. |
The advantage of laser beam machining is |
| A. | High production rates |
| B. | Minimum heat affected zone |
| C. | Dissimilar metals can be welded |
| D. | Precise operation |
| E. | All of the above |
| Answer» E. All of the above | |
| 642. |
A tool signature, the nose radius is indicated |
| A. | In the middle |
| B. | Second from end |
| C. | Second position |
| D. | In the first position |
| E. | In the last position |
| Answer» E. In the last position | |
| 643. |
In wire cut EDM the electrode is |
| A. | Parting off |
| B. | a thin wire |
| C. | a copper bar |
| D. | a thin sheet |
| E. | a tungsten plate |
| Answer» B. a thin wire | |
| 644. |
The type of bearing to be selected for application where low torque, low coefficient of friction, non-magnetic properties and long life are required would be |
| A. | Needle bearing |
| B. | Ball bearing |
| C. | Bush bearing |
| D. | Roller bearing |
| E. | Jewel bearing |
| Answer» E. Jewel bearing | |
| 645. |
Which of the following process needs high voltage for its operation? |
| A. | Plasma arc machining |
| B. | Ultrasonic machining |
| C. | Abrasive jet machining |
| D. | Electro chemical machining |
| E. | Electron beam machining |
| Answer» E. Electron beam machining | |
| 646. |
All of the following are used for oblique cutting EXCEPT |
| A. | Parting off |
| B. | Slotting cutter |
| C. | Drills |
| D. | Milling cutters |
| E. | Lathe tools |
| Answer» B. Slotting cutter | |
| 647. |
In which of the following welding process the transfer of metal from the electrode occurs due to molecular attraction? |
| A. | Metallic arc welding |
| B. | Thermit welding |
| C. | Thermit welding |
| D. | DC arc welding |
| E. | None of the above |
| Answer» A. Metallic arc welding | |
| 648. |
Hacksaw used for cutting steel, cast iron, aluminium etc, has the following number of teeth per centimeter |
| A. | Parting off |
| B. | 12 |
| C. | 7 |
| E. | 10 |
| Answer» C. 7 | |
| 649. |
A twist drill is specified by |
| A. | The size of hole it can drill |
| B. | A number specifying hole size |
| C. | A letter of alphabet |
| D. | Any of the above |
| E. | None of above |
| Answer» D. Any of the above | |
| 650. |
In a sine bar the standard length is measured from |
| A. | Edge to edge |
| B. | Between inner circumference of two buttons |
| C. | Between out circumference of two buttons |
| D. | Between the centers of two buttons |
| E. | Any of the above |
| Answer» D. Between the centers of two buttons | |
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