McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 351. |
The facting sand used in foundry generally consists of |
| A. | Alumina, clay and silica |
| B. | Aluminium and silica |
| C. | Silica and clay |
| D. | Alumina and clay |
| E. | Silica and binder |
| Answer» C. Silica and clay | |
| 352. |
A massometer is |
| A. | An instrument for the measurement of mass |
| B. | An instrument of measurement of specific gravity of flowing fluids |
| C. | An instrument for the measurement of mass of fluid flowing through a pipes |
| D. | An instrument used for measuring mass of free flowing solids through conveyor pipes |
| E. | None of the above |
| Answer» D. An instrument used for measuring mass of free flowing solids through conveyor pipes | |
| 353. |
Carbon tool steel are broadly classified into two categories as |
| A. | hard and soft |
| B. | warping and non-warping |
| C. | Parting off |
| D. | water hardening and oil hardening |
| E. | hard and brittle |
| Answer» D. water hardening and oil hardening | |
| 354. |
Green sand moulds are |
| A. | Painted with green paint |
| B. | Made out of green coloured sand |
| C. | Green in colour |
| D. | Made from damp moulding sand |
| E. | Skin dried moulds |
| Answer» C. Green in colour | |
| 355. |
The fuel used in pit furnace is generally |
| A. | Charcoal |
| B. | Wood |
| C. | Coke |
| D. | Coal |
| E. | Oil |
| Answer» C. Coke | |
| 356. |
A pair of tumbler gears is used in |
| A. | Milling machine |
| B. | Shaper |
| C. | Capstan lathe |
| D. | Grinding machines |
| E. | Centre lathe |
| Answer» E. Centre lathe | |
| 357. |
Cast iron pipes are cast by |
| A. | Investment casting process |
| B. | Vacuum moulding process |
| C. | Centrifugal casting process |
| D. | Loam moulding process |
| E. | Die casting process |
| Answer» C. Centrifugal casting process | |
| 358. |
Thermocouples are generally used for accurate temperature measurement upto |
| A. | 1000?C |
| B. | 200?C |
| C. | 100?C |
| D. | 1600?C |
| E. | 500?C |
| Answer» D. 1600?C | |
| 359. |
Discontinuous chip in ductile material is produced because of |
| A. | Insufficient cooling |
| B. | Sharp cutting edge |
| C. | Sintering |
| D. | Low friction |
| E. | Large rake angle |
| Answer» A. Insufficient cooling | |
| 360. |
In power presses bolster plate is used to |
| A. | Parting off |
| B. | mount the press tool |
| C. | cut the edges |
| D. | eject the pressed component |
| E. | position the piece |
| Answer» B. mount the press tool | |
| 361. |
Draft allowance on castings is generally |
| A. | 20 - 30 mm/M |
| B. | 5 - 10 mm/M |
| C. | 2 - 5 mm/M |
| D. | 10 - 15 mm/M |
| E. | 1 - 2 mm/M |
| Answer» D. 10 - 15 mm/M | |
| 362. |
Railway rails are generally made of |
| A. | Mild steel |
| B. | Alloys steel containing 0.8 to 0.9% carbon |
| C. | High carbon steel |
| D. | Medium carbon steel |
| E. | Deam mild steel |
| Answer» B. Alloys steel containing 0.8 to 0.9% carbon | |
| 363. |
Sweep patterns are used for |
| A. | Tiny objects |
| B. | Objects of circular shapes |
| C. | Elliptical objects |
| D. | Rectangular objects |
| E. | Irregularly shaped objects |
| Answer» B. Objects of circular shapes | |
| 364. |
The linear characteristics of valve is |
| A. | In which the length of valve is more than 10 times the width |
| B. | In which the longest parameter of valve is not less than 20 times the widest part of the valve |
| C. | In which the valve steam operates linearly |
| D. | One in which the flow is directly proportional to the valve lift |
| E. | None of the above |
| Answer» D. One in which the flow is directly proportional to the valve lift | |
| 365. |
Which of the following is not true for diamond? |
| A. | Parting off |
| B. | If the hardest substance known |
| C. | Expensive to be shaped |
| D. | It is ductile |
| E. | It is also used as a cutting tool |
| Answer» D. It is ductile | |
| 366. |
Which of the following material connot be forged? |
| A. | Cast iron |
| B. | Low carbon steel |
| C. | Dead mild steel |
| D. | Eutectoid steel |
| E. | Carbon chrome steel |
| Answer» A. Cast iron | |
| 367. |
For cylindrical grinding the peripheral speed will be of the order of |
| A. | 800 m/min |
| B. | 180 m/min |
| C. | 9000 m/min |
| D. | 18000 m/min |
| E. | 1800 m/min |
| Answer» E. 1800 m/min | |
| 368. |
Generally the pattern used in manufacturing cast iron pipes are |
| A. | Solid pattern |
| B. | Match-plate pattern |
| C. | Split pattern |
| D. | Sweep pattern |
| E. | None of the above |
| Answer» E. None of the above | |
| 369. |
Which of the following non-traditional machining process will have inferior surface finish as compared to the remaining processes? |
| A. | Electro discharge machining |
| B. | Plasma arc machining |
| C. | Electron beam machining |
| D. | Chemical machining |
| E. | Ultrasonic machining |
| Answer» B. Plasma arc machining | |
| 370. |
The type of bearing suitable for high temperature applications where lubrication is impossible and where corrosion or chermical action limits choice of material, would be |
| A. | Carbon graphite bearing |
| B. | Needle bearing |
| C. | Aluminium bearing |
| D. | Cast iron bearing |
| E. | Jewel bearing |
| Answer» A. Carbon graphite bearing | |
| 371. |
The selection of non-traditional machining process for a particular application depends on |
| A. | Physical parameters of the process |
| B. | Shspes to be machined |
| C. | Process capability |
| D. | Economics |
| E. | All of the above |
| Answer» E. All of the above | |
| 372. |
The cutting speed is usually low in case of |
| A. | Soft material |
| B. | Regular shaped materials |
| C. | Castings |
| D. | Stepped shafts |
| E. | None of the above |
| Answer» C. Castings | |
| 373. |
Continuous chips may be formed while machining |
| A. | Ductile material |
| B. | Non-ferrous material |
| C. | Hard material |
| D. | Tough material |
| E. | Brittle materials |
| Answer» A. Ductile material | |
| 374. |
Solder contains |
| A. | Lead and tin |
| B. | Lead and silver |
| C. | Silver and nickel |
| D. | Nickel and lead |
| E. | Tin and silver |
| Answer» A. Lead and tin | |
| 375. |
A swab is |
| A. | A tool used in foundry for moistening the sand |
| B. | A pneumatic tools |
| C. | A tool used in foundry for repairing the mould |
| D. | A tool used in foundry for smoothening the mould |
| E. | A tool used on shaper |
| Answer» A. A tool used in foundry for moistening the sand | |
| 376. |
Hardness tester used for determining the hardness of a core is bearly identical to which of the following? |
| A. | Vickers hardness tester |
| B. | Rockwell hardness tester |
| C. | Brinell hardness tester |
| D. | Shore's scleroscope |
| E. | Parting off |
| Answer» C. Brinell hardness tester | |
| 377. |
In gang milling |
| A. | Work is fed into the rotation of cutter |
| B. | A cutter generates two or more plain surface simultaneously |
| C. | Work moves in the opposite direction as the rotating of the cutter |
| D. | Work moves in the same direction as the rotation of the cutter |
| E. | More than one cutter is simultaneously used |
| Answer» E. More than one cutter is simultaneously used | |
| 378. |
A gagger is |
| A. | A tool used in clearing material before welding |
| B. | A, L shaped metal accessory used in floor moulds to support hanging bodies of sand in cope |
| C. | A device for removing foreign particles from sand |
| D. | A tool used in clearing welds |
| E. | A tool used in foundry for cleaning of castings |
| Answer» B. A, L shaped metal accessory used in floor moulds to support hanging bodies of sand in cope | |
| 379. |
Which of the following is gear finishing process? |
| A. | Gear lapping |
| B. | Gear shaving |
| C. | Gear grinding |
| D. | All of the above |
| E. | None of the above |
| Answer» D. All of the above | |
| 380. |
Abrasive GC indicates |
| A. | White Al2O3 |
| B. | Parting off |
| C. | Al2O3 |
| D. | Green grit SiC |
| E. | SiC |
| Answer» D. Green grit SiC | |
| 381. |
The primary detector in a pressure gauge is usually |
| A. | Bellows |
| B. | Diaphragm |
| C. | Spring |
| D. | Bourdon tube |
| E. | Coil spring |
| Answer» D. Bourdon tube | |
| 382. |
Which type of gears can be manufactured by extrusion process? |
| A. | Spur gears |
| B. | Bevel gears |
| C. | Helical gears |
| D. | Worm gears |
| E. | Herringbone gears |
| Answer» C. Helical gears | |
| 383. |
Chip breaker is |
| A. | an obstruction attached to face of the tool |
| B. | a hammer used to break the chips |
| C. | a coolant forced under pressure on the chip |
| D. | None of the above |
| E. | Parting off |
| Answer» A. an obstruction attached to face of the tool | |
| 384. |
Point angle of 135 to 150? is used on drills while drilling |
| A. | hard steels |
| B. | nickel alloys |
| C. | thin sheet metals |
| D. | Any of the above |
| E. | Parting off |
| Answer» D. Any of the above | |
| 385. |
Back rake angle while turning brass is |
| A. | 5? |
| B. | 10? |
| C. | Parting off |
| D. | 22? |
| E. | 0? |
| Answer» E. 0? | |
| 386. |
The cutting tool is |
| A. | Goose neck tool |
| B. | Parting tool |
| C. | Threading tool |
| D. | Boring tool |
| E. | Drilling tool |
| Answer» B. Parting tool | |
| 387. |
The standard taper provided on the tapered shank of drills is known as |
| A. | Chapman taper |
| B. | Morse taper |
| C. | Jarno taper |
| D. | Taper No. 1 |
| E. | None of the above |
| Answer» B. Morse taper | |
| 388. |
A gear has a pitch diameter of 5.732 inches and circular pitch |
| A. | 5 |
| B. | 9 |
| C. | 7 |
| D. | 3 |
| E. | 1 |
| Answer» A. 5 | |
| 389. |
Which of the following material is difficult to be spot welded? |
| A. | Cold rolled mild steel sheet |
| B. | Hot rolled mild steel sheet |
| C. | Stainless steel |
| D. | Copper |
| E. | None of the above |
| Answer» D. Copper | |
| 390. |
Hardness of diamond can be determined by |
| A. | Brinell hardness tester |
| B. | Rockwell hardness tester |
| C. | Vickers hardness tester |
| D. | None of the above |
| E. | Parting off |
| Answer» D. None of the above | |
| 391. |
In case of turning or milling, the surface roughness is expected to be in the range |
| A. | 20 to 50 |
| B. | 5 to 15 |
| C. | 50 to 100 |
| D. | 100 to 250 |
| E. | 250 to 500 |
| Answer» D. 100 to 250 | |
| 392. |
True centrifugal casting is used to |
| A. | Get accurate castings |
| B. | Get chilled castings |
| C. | Get dynamically balanced castings |
| D. | Get statistically balanced castings |
| E. | Cast objects symmetrical about an axis |
| Answer» E. Cast objects symmetrical about an axis | |
| 393. |
While using high speed steel tools, the cutting speed will be highest for which of the following steel? |
| A. | Alloy |
| B. | Stainless steel |
| C. | Parting off |
| D. | Medium carbon steel |
| E. | Mild steel |
| Answer» E. Mild steel | |
| 394. |
If a piece of steel is reheated to a temperature of 200?C to 250?C immediately after quenching, the process is known as |
| A. | Hardening |
| B. | Cyniding |
| C. | Normalizing |
| D. | Tempering |
| E. | Annealing |
| Answer» D. Tempering | |
| 395. |
Spot facing is |
| A. | Localised machining of a component |
| B. | None of above |
| C. | A spot prepared on shaper or milling machine |
| D. | Machining of a spot to fit other parts |
| E. | Mahining of spol on the surface of a part to furnish a flat bearing or the head of a holt or nut |
| Answer» E. Mahining of spol on the surface of a part to furnish a flat bearing or the head of a holt or nut | |
| 396. |
Hollow punches are used for making holes upto |
| A. | 10 mm and above |
| C. | Parting off |
| D. | (5 - 8) mm |
| E. | (6 - 9) mm |
| Answer» A. 10 mm and above | |
| 397. |
A plug gauge is used for measuring |
| A. | Spherical holes |
| B. | None of above |
| C. | Screw threads |
| D. | Cylindrical bores |
| E. | Taper bores |
| Answer» D. Cylindrical bores | |
| 398. |
Angle plate is |
| A. | Used for measurement of angles |
| B. | Used for cutting angles on jobs on shaper |
| C. | Used for holding angular jobs in milling machine. |
| D. | Cast iron jig used to hold work in a vertical position of layout or machining |
| E. | None of above |
| Answer» A. Used for measurement of angles | |
| 399. |
Ablation mechanism is used in which of the following machining process? |
| A. | Water jet machining |
| B. | Chemical machining |
| C. | Laser beam machining |
| D. | Ultrasonic machining |
| E. | Electron beam machining |
| Answer» B. Chemical machining | |
| 400. |
A photo-electric device in which the resistance of the metal changes directly proportional to the ligh striking on it is known as |
| A. | Photo-cell |
| B. | Photo-emission |
| C. | Photo-voltaic cell |
| D. | Photo-conductive cell |
| E. | None of the above |
| Answer» D. Photo-conductive cell | |
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