McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 401. |
Which of the following is an accessory for lathe machine? |
| A. | Lead screw |
| B. | Cone pulley |
| C. | Tool post |
| D. | Coolant pump |
| E. | None of the above |
| Answer» D. Coolant pump | |
| 402. |
Loams sand generally has |
| A. | 50% clay and 18% moisture |
| B. | 60% clay and 30% moisture |
| C. | 34% clay and 5% moisture |
| D. | 70% clay and 30% moisture |
| E. | 40% clay and 10% moisture |
| Answer» A. 50% clay and 18% moisture | |
| 403. |
Straight shears are used for |
| A. | Straight line cutting of sheets |
| B. | Making circular cuts |
| C. | Parting off |
| D. | Making irregular cuts |
| Answer» A. Straight line cutting of sheets | |
| 404. |
Duration which operation on a lathe machine, the spindle speed is usually the least? |
| A. | Finish turning |
| B. | Drilling |
| C. | Parting off |
| D. | Rough turning |
| E. | Knurling |
| Answer» E. Knurling | |
| 405. |
Music wire |
| A. | Is a standard wire for gauge determination |
| B. | Is a resistance wire used in instruments |
| C. | Is fine wire used in musical instruments manufacture springs |
| D. | None of above |
| E. | Is a carbon steel wire used to manufacture springs |
| Answer» E. Is a carbon steel wire used to manufacture springs | |
| 406. |
In abrasive jet machining the achievable tolerances are nearly |
| A. | 500 |
| B. | 1 |
| C. | 0.1 |
| D. | 250 |
| E. | 50 |
| Answer» E. 50 | |
| 407. |
A knee is a part of |
| A. | Lathe |
| B. | Jig boring machine |
| C. | Milling machine |
| D. | Breaching machine |
| E. | Shaper |
| Answer» C. Milling machine | |
| 408. |
The operation of cutting multiple holes is called |
| A. | perforating |
| B. | Parting off |
| C. | notching |
| D. | trimming |
| E. | lancing |
| Answer» A. perforating | |
| 409. |
Gear made by sand casting are used in |
| A. | Automobiles |
| B. | Toys |
| C. | Diesel locomotives |
| D. | Concrete mixers |
| E. | Machine tools |
| Answer» D. Concrete mixers | |
| 410. |
A bench vice is used for |
| B. | Filing the job |
| C. | Tapping the job |
| D. | Clamping the job |
| E. | Parting off |
| Answer» D. Clamping the job | |
| 411. |
Broaching is primarily done for |
| A. | mass production |
| B. | hard materials |
| C. | better finish |
| D. | cylindrical jobs |
| E. | Parting off |
| Answer» A. mass production | |
| 412. |
For simple turning operation of lathe, the cutting speed is specified as 70 metres per minute. The cutting tool may be expected to be |
| A. | Carbide |
| B. | Higher speed steel |
| C. | Carbon steel |
| D. | Mild steel |
| E. | Diamond |
| Answer» A. Carbide | |
| 413. |
Simple indexing using a dividing head of turn ratio 40 for 6 division would be |
| A. | 14 holes in 21 hole circle plate |
| B. | 26 holes in 21 hole circle plate |
| C. | 6 turns and holes in 21 hole circle plate |
| D. | 6 turns and 14 holes in 30 hole circle plate |
| E. | 6 turns |
| Answer» C. 6 turns and holes in 21 hole circle plate | |
| 414. |
In instrumentation, registering is |
| A. | Production of continuous record on an instrument |
| B. | Conversion of signal from one form to another |
| C. | Indication by numbers or some other symbol of discrete increments, the value of some quantity |
| D. | To perform various manipulations before indicating or recording results |
| E. | None of the above |
| Answer» C. Indication by numbers or some other symbol of discrete increments, the value of some quantity | |
| 415. |
In a drilling machine having six spindle speeds if first five speeds are 458, 605, 800, 1055 and 1390 rpm, the next higher speed would be |
| A. | 1760 rpm |
| B. | 1500 rpm |
| C. | 1830 rpm |
| D. | 1630 rpm |
| E. | 1440 rpm |
| Answer» C. 1830 rpm | |
| 416. |
A pattern maker's contraction rule accounts for |
| A. | All materials of the pattern |
| B. | All materials to be cast |
| C. | Only shrinkage allowance |
| D. | Only shrinkage, draft and distortion allowances |
| E. | All pattern allowances |
| Answer» C. Only shrinkage allowance | |
| 417. |
The horizontal force required to slide the tail stock would be |
| A. | 1000 kg |
| B. | 648.84 kg |
| C. | 100 kg |
| D. | 148.84 kg |
| E. | 500 kg |
| Answer» D. 148.84 kg | |
| 418. |
The audible spectrum of sound is in the range of |
| A. | 0 to 100 cps |
| B. | 30 to 15000 cps |
| C. | 15000 to 25000 cps |
| D. | 25000 to 10000 cps |
| E. | None of the above |
| Answer» B. 30 to 15000 cps | |
| 419. |
Size of a shaper is generally specified by |
| A. | Length, breadth and height of machine |
| B. | Maximum travel of cutting tool |
| C. | Weight of the machine |
| D. | Quick return ratio |
| E. | The area of machined surface per hour |
| Answer» B. Maximum travel of cutting tool | |
| 420. |
Which of the following process is preferred for the welding of grey cast iron? |
| A. | Oxy-acetylene |
| B. | Thermit |
| C. | MIG |
| D. | TIG |
| E. | Submerged arc |
| Answer» A. Oxy-acetylene | |
| 421. |
For mild steel work piece using carbide tool, the temperature at which maximum materials is removed is |
| A. | 200?C |
| B. | 275?C |
| C. | 100?C |
| D. | Near zero deg centigrade |
| E. | Below room temperature |
| Answer» B. 275?C | |
| 422. |
The surface speed of regulating wheel in case of centreless grinding is |
| A. | 1500 - 1800 M/min |
| B. | 15 - 75 M/min |
| C. | 1000 - 1500 M/min |
| D. | 100 - 500 M/min |
| E. | 500 - 800 M/min |
| Answer» B. 15 - 75 M/min | |
| 423. |
Which of the following is considered to be non-machinable by conventional processes? |
| A. | Grey cast iron |
| B. | Silicon bronze |
| C. | Parting off |
| D. | While cast iron |
| E. | Cast copper |
| Answer» D. While cast iron | |
| 424. |
The cemented carbide tools are generally poor in |
| A. | Compression |
| B. | Tension |
| C. | Shear |
| D. | Torsion |
| E. | None of the above |
| Answer» C. Shear | |
| 425. |
Which quality of fit is provided for plummer block bearings? |
| A. | H8f8 |
| B. | H6f6 |
| C. | H8d8 |
| D. | H6g5 |
| E. | None of the above |
| Answer» C. H8d8 | |
| 426. |
All of the following are metal cleaning methods EXCEPT |
| A. | Parting off |
| B. | Phosphatizing |
| C. | Knurling |
| D. | Abrasion blasting |
| E. | Tumbling |
| Answer» C. Knurling | |
| 427. |
Which one of the following is a natural abrasive? |
| A. | Alundum |
| B. | Corundum |
| C. | Boron carbide |
| D. | Carborundum |
| E. | None of the above |
| Answer» B. Corundum | |
| 428. |
In automatic control systems what could be the source of process disturbances? |
| A. | Changes in supply |
| B. | Changes in demand |
| C. | Changes in environmental and other associated variables |
| D. | Change in set point |
| E. | Any of the above |
| Answer» E. Any of the above | |
| 429. |
The maximum peripheral speed of a grinding wheel is limited by |
| A. | The work material |
| B. | The diameter of the wheel |
| C. | The frive limitations |
| D. | The size of the work piece |
| E. | The kind of bond used in the wheel |
| Answer» E. The kind of bond used in the wheel | |
| 430. |
Continuous chips |
| A. | Are easily disposable |
| B. | Sintering |
| C. | Cause good surface finish |
| D. | Waste power due to heat generation |
| E. | Do not require cooling |
| Answer» D. Waste power due to heat generation | |
| 431. |
Fetling of castings is done to |
| A. | Fill the void by welding |
| B. | Smoothen surfaces |
| C. | Remove the extra material from castings |
| D. | To remove internal stresses from castings |
| E. | To produce uniformly cooled castings. |
| Answer» C. Remove the extra material from castings | |
| 432. |
Lathe bed is made of |
| A. | Mild steel |
| B. | Close grain cast iron |
| C. | Cast steel |
| D. | Pig iron |
| E. | Alloy steel |
| Answer» B. Close grain cast iron | |
| 433. |
In a shrink rule the graduations are |
| A. | Slightly longer than the regular graduations |
| B. | Same as regular graduations |
| C. | Slightly shorter than the regular graduations |
| E. | None of the above |
| Answer» A. Slightly longer than the regular graduations | |
| 434. |
The purpose of using a core in moulding is |
| A. | To produce sound casting |
| B. | To permit uniform flow of metal during moulding |
| C. | To enable easy removal of pattern |
| D. | To produce chilled surface |
| E. | To provide desired recesses in casting |
| Answer» E. To provide desired recesses in casting | |
| 435. |
A micron is |
| A. | 0.01 mm |
| B. | 0.1 mm |
| C. | 1 mm |
| D. | 0.0001 mm |
| E. | 0.001 mm |
| Answer» E. 0.001 mm | |
| 436. |
Investment casting uses pattern made of |
| A. | Clay |
| B. | Wood |
| C. | Metal |
| D. | Plastic |
| E. | Wax |
| Answer» E. Wax | |
| 437. |
Metal patterns are used for |
| A. | Large castings |
| B. | Large scale production of castings |
| C. | Complicated castings |
| D. | Precision castings |
| E. | Small castings |
| Answer» B. Large scale production of castings | |
| 438. |
In a lathe power feed is generally not available for |
| A. | Lead screw |
| B. | Carriage |
| C. | Cross slide |
| D. | Compound slide |
| E. | All of the above |
| Answer» D. Compound slide | |
| 439. |
Bellows are |
| A. | Used in foundry for cleaning the casting |
| B. | Used in foundry for blowing loose sand from cavities and surface of the mould |
| C. | Used in foundry for smoothening and cleaning out depression in the mould |
| D. | Used in foundry for repairing the moulds |
| E. | Used in foundry for moistening the mould |
| Answer» B. Used in foundry for blowing loose sand from cavities and surface of the mould | |
| 440. |
Which one of the following methods cannot be used for turning internal tapers? |
| A. | Tail stock offset |
| B. | Cross slide |
| C. | Compound slide |
| D. | All of the above |
| E. | None of the above |
| Answer» A. Tail stock offset | |
| 441. |
Which of the following is not a chipless machining process? |
| A. | Rolling |
| B. | Grinding |
| C. | Extruding |
| D. | Die casting |
| E. | Cold heading |
| Answer» B. Grinding | |
| 442. |
During planning the chips produced are in the form of |
| A. | closed spirals |
| B. | long helics |
| C. | Parting off |
| D. | spinters |
| E. | fragments |
| Answer» E. fragments | |
| 443. |
Choose the incorrect statements. A coolant should be |
| A. | Good lubricant |
| B. | Generally not provided |
| C. | Harmless to operator and machine |
| D. | Transparent |
| E. | Light in weight |
| Answer» E. Light in weight | |
| 444. |
Which of the following centre is used for holding hollow jobs on a lathe? |
| A. | Oil groove centre |
| B. | Revolving centre |
| C. | Half centre |
| D. | Square centre |
| E. | Pipe centre |
| Answer» E. Pipe centre | |
| 445. |
Which of the following process needs high current for its operation? |
| A. | Electro chemical machining |
| B. | Ultrasonic machining |
| C. | Abrasive machining |
| D. | Electron beam machining |
| E. | Electric discharge machining |
| Answer» A. Electro chemical machining | |
| 446. |
For short-distance transmission, the methods of transmission that can be used is |
| A. | Hydraulic |
| B. | Pneumatic |
| C. | Electric and electronic |
| D. | Any of the above |
| E. | None of the above |
| Answer» D. Any of the above | |
| 447. |
In a cupola |
| A. | Wind box and tap hole are at the same level |
| B. | Slag spout is below tape hole |
| C. | Slag spout is above wind box |
| D. | Tape hole is below wind box |
| E. | Tape hole is above wind box |
| Answer» D. Tape hole is below wind box | |
| 448. |
How wire anemometers are generally used to |
| A. | Measure thermal conductivity of solids |
| B. | Measure pressure of fluids |
| C. | Measure temperature of moving fluid |
| D. | Measure velocity of air steam |
| E. | Measure magnetic properties |
| Answer» D. Measure velocity of air steam | |
| 449. |
In EDM, the erosion of metal occurs due to |
| A. | Eddy current generated on the metal surface |
| B. | Highly ionised electrolyte impinging on the metal surface |
| C. | Chemical erosion |
| D. | Rapidly recurring spark discharges impinging against the surface of work piece |
| E. | Molecular transfer |
| Answer» D. Rapidly recurring spark discharges impinging against the surface of work piece | |
| 450. |
The tool used for punching small indentations/establishing points for divider is termed as |
| A. | Solid punch |
| B. | Parting off |
| D. | Hollow punch |
| E. | Prick punch |
| Answer» E. Prick punch | |
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