McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 251. |
Which turning aluminium the side rake angle is nearly |
| A. | Parting off |
| B. | 5? |
| C. | 15? |
| D. | 10? |
| E. | 0? |
| Answer» C. 15? | |
| 252. |
The moisture content of moulding sand generally varies from |
| A. | 40-50 percent |
| B. | 2-8 percent |
| C. | 10-25 percent |
| D. | 50-65 percent |
| E. | 25-40 percent |
| Answer» B. 2-8 percent | |
| 253. |
LASER is |
| A. | an electromagnetic radiation |
| B. | a magnetic radiation |
| C. | a light radiation |
| D. | Parting off |
| E. | an atomic radiation |
| Answer» A. an electromagnetic radiation | |
| 254. |
Which of the following does not represent the number of slip gauges in a metric set? |
| A. | 110 |
| B. | 45 |
| C. | 88 |
| D. | 65 |
| E. | 103 |
| Answer» D. 65 | |
| 255. |
In lost wax casting for non-ferrous materials, the material of the mould is |
| A. | Sodium silicate |
| B. | Silica |
| C. | Plaster of Paris |
| D. | Ethyl silicate |
| E. | Parting off |
| Answer» C. Plaster of Paris | |
| 256. |
Oxygen cylinders are |
| A. | Cast iron cylinders |
| B. | Seamless steel cylinders |
| C. | Die cast |
| D. | Steel cylinders, welded structure |
| E. | Alloy steel cylinders, thermit welded |
| Answer» B. Seamless steel cylinders | |
| 257. |
A work piece of 100 mm diameter is to be machined at a cutting speed of 100 metres per minute. The rpm of the work piece should be |
| A. | 636 |
| B. | 318 |
| C. | 100 |
| D. | 200 |
| E. | 159 |
| Answer» B. 318 | |
| 258. |
Point angle of drill is usually more while drilling |
| A. | Slate |
| B. | Marble |
| C. | Hard alloys |
| D. | Soft cast iron |
| E. | Mild steel |
| Answer» C. Hard alloys | |
| 259. |
In drilling operation if the drill point is outside the drill axis, the effect on the drilled hole will be |
| A. | The hole will be rough |
| B. | The hole will be smooth |
| C. | The hole will become too large |
| D. | The hole will become elliptical |
| E. | The drilled hole will be normal |
| Answer» C. The hole will become too large | |
| 260. |
Black broken lines on a pattern indicates |
| A. | Surface to be left unmachined |
| B. | Surfaces to be machined |
| C. | Seats for loose core prints |
| D. | Core prints |
| E. | Fillets |
| Answer» E. Fillets | |
| 261. |
Spherodising is a |
| A. | annealing process |
| B. | surface treatment process |
| C. | Parting off |
| D. | age-hardening process |
| E. | hardening process |
| Answer» A. annealing process | |
| 262. |
A tool is said to have worn if |
| A. | it produces discontinuous chips |
| B. | its cutting angles have changed |
| C. | heat produced in cutting is large |
| D. | None of the above |
| E. | Parting off |
| Answer» B. its cutting angles have changed | |
| 263. |
Which of the following is not a 'drawing' process? |
| A. | Spinning |
| B. | Bulging |
| C. | Embossing |
| D. | Tube drawing |
| E. | Lancing |
| Answer» E. Lancing | |
| 264. |
To break the continuous chips |
| A. | Use a chip breaker in the tool |
| B. | Cut the metal intermittently |
| C. | Use high cutting speed and low feed |
| D. | None of the above |
| E. | Small fragments |
| Answer» A. Use a chip breaker in the tool | |
| 265. |
Hard, tough, fragile and heat sensitive metals can be processed by |
| A. | Explosive forming |
| B. | Intraform machining |
| C. | Electrical discharge machining |
| D. | Cold heading |
| E. | High energy rate forming |
| Answer» C. Electrical discharge machining | |
| 266. |
In which grinding operation the peripheral speed of the grinding wheel will be highest? |
| A. | Circular grinding |
| B. | Face grinding |
| C. | Internal grinding |
| D. | Surface grinding |
| E. | Part off grinding |
| Answer» E. Part off grinding | |
| 267. |
Which of the following pattern can be used for symmetrical objects only? |
| A. | Gated pattern |
| B. | Split pattern |
| C. | Sweep pattern |
| D. | All of the above |
| E. | Parting off |
| Answer» C. Sweep pattern | |
| 268. |
When the capacity of a power press is expressed in 100 tonnes, it implies that |
| A. | Dead weight of the press is 100 tonnes |
| B. | Total production of material will be 100 tonnes in a day |
| C. | The maximum load that the press can apply is 50 tonnes |
| D. | All of the above |
| E. | None of the above |
| Answer» C. The maximum load that the press can apply is 50 tonnes | |
| 269. |
Which of the following welding process is preferred for wrought iron? |
| A. | Spot welding |
| B. | Mig welding |
| C. | Forge welding |
| D. | Lesser welding |
| E. | Thermit welding |
| Answer» C. Forge welding | |
| 270. |
The operation of cutting holes in sheet by a press is known as |
| A. | Punching |
| B. | Shearing |
| C. | Slitting |
| D. | Drilling |
| E. | Trimming |
| Answer» A. Punching | |
| 271. |
The sheet metals which can be cut by a hand shear have a thickness |
| A. | Any value of s.w.g. |
| B. | Upto 5 s.w.g. |
| D. | Parting off |
| E. | Upto 165 s.w.g. |
| Answer» E. Upto 165 s.w.g. | |
| 272. |
Chip breakers are used while machining |
| A. | ductile materials |
| B. | brittle materials |
| C. | Both (A) and (B) |
| D. | None of the above |
| E. | Parting off |
| Answer» A. ductile materials | |
| 273. |
Usually the range of an instrument is selected such that |
| A. | Minimum reading coincides with average value of working parameter |
| B. | Minimum reading coincides with minimum value of the working parameter |
| C. | For the working parameter the pointer direction is vertical |
| D. | For the working parameter the pointer deflection is about ? of the full scale |
| E. | None of the above |
| Answer» D. For the working parameter the pointer deflection is about ? of the full scale | |
| 274. |
The weight of hammers used in a fitting ship is |
| B. | 0.25 kg - 0.50 kg |
| C. | Parting off |
| D. | 0.45 kg - 0.70 kg |
| E. | 0.75 kg - 1 kg |
| Answer» D. 0.45 kg - 0.70 kg | |
| 275. |
Core prints are provided to |
| A. | Form seat to support and hold the core |
| B. | Direct the flow of molten material during pouring |
| C. | Form trade mark of company on castings |
| D. | Reinforce the core to withstand the force of buoyancy of molten metal |
| E. | Produce castings with specific surface design |
| Answer» A. Form seat to support and hold the core | |
| 276. |
For the measurement of viscosity the transduction method could be |
| A. | Electron tube |
| B. | Magneto-electric |
| C. | Photoelectric |
| D. | Radioactive |
| E. | Capacitive |
| Answer» E. Capacitive | |
| 277. |
A rammer is |
| A. | A measuring tool |
| B. | A tool used in powder metallurgy for shaping the mixture |
| C. | A tool used in foundry to pack the sand in mould |
| D. | A tool used in press work to lift the pressed components |
| E. | A tool used n welding for cleaning purpose |
| Answer» C. A tool used in foundry to pack the sand in mould | |
| 278. |
Device used in the fitting shop used for holding round bars during marking/centre drilling thin faces is known as |
| B. | Parting off |
| C. | Bench vice |
| D. | Surface plate |
| E. | V-block |
| Answer» E. V-block | |
| 279. |
Filler metal is essentially used in which of the following welding process? |
| A. | Spot welding |
| B. | Seam welding |
| C. | Projection welding |
| D. | Gas welding |
| E. | All of the above |
| Answer» D. Gas welding | |
| 280. |
Which of the following is not a part of gating system? |
| A. | Vents |
| B. | Pouring basin |
| C. | Sprue |
| D. | Gates and riser |
| E. | Parting off |
| Answer» A. Vents | |
| 281. |
When small castings are to be produced in large numbers, the type of pattern generally used is |
| A. | Split pattern |
| B. | Loose piece pattern |
| C. | Sweep pattern |
| D. | Match-plate pattern |
| E. | Solid pattern |
| Answer» D. Match-plate pattern | |
| 282. |
Hardness of work surface affects honing by |
| A. | varying the rate of stock removal |
| B. | poor surface finish |
| C. | coolant consumption |
| D. | All of the above |
| E. | Parting off |
| Answer» A. varying the rate of stock removal | |
| 283. |
The tool used for marking the location of bend line on thick metal/marking centres of holes is termed as |
| A. | Hollow punch |
| B. | Centre punch |
| D. | Prick punch |
| E. | Parting off |
| Answer» B. Centre punch | |
| 284. |
Warping may be avoided when quenching a long slender piece of work by |
| A. | Holding the piece between clamps |
| B. | Holding the piece vertically over the quenching both and plunging it straight down |
| C. | Holding the piece on horizontally adequate supports |
| D. | Pulling the piece from both ends |
| E. | None of the above |
| Answer» B. Holding the piece vertically over the quenching both and plunging it straight down | |
| 285. |
What multiple of basic unit is 'atto'? |
| A. | 10--18 |
| B. | 10--15 |
| C. | 10--12 |
| D. | 10--20 |
| E. | 10--9 |
| Answer» A. 10--18 | |
| 286. |
A vent wire is |
| A. | is used in cold heading |
| B. | A kind of wire used in hot forging |
| C. | A sharp pointed wire used in foundry for punching holes through the rammed sand |
| D. | A wire for providing airflow |
| E. | None of the above |
| Answer» C. A sharp pointed wire used in foundry for punching holes through the rammed sand | |
| 287. |
Which one of the following is not a vector quantity? |
| A. | Acceleration |
| B. | Impulse |
| C. | Time |
| D. | Force |
| E. | Momentum |
| Answer» C. Time | |
| 288. |
In which of the following welding process, flux is used in the form of granules? |
| A. | Submerged arc welding |
| B. | Gas arc welding |
| C. | DC arc welding |
| D. | Argon arc welding |
| E. | All of the above |
| Answer» A. Submerged arc welding | |
| 289. |
A set hammer is made of |
| A. | Mild steel |
| B. | Parting off |
| D. | High carbon steel |
| E. | Tool steel and hardened |
| Answer» E. Tool steel and hardened | |
| 290. |
Material used for resistances is generally |
| A. | Nichrome |
| B. | Duralumin |
| C. | Constantan |
| D. | Monel metal |
| E. | Elinvar |
| Answer» C. Constantan | |
| 291. |
A kentometer is |
| A. | A manometric device used for measurement of vacumms |
| B. | A simple device used for measurements of kinetic energy |
| C. | A device used for measurement of kinetic energy |
| D. | A device used for the measurement of temperature |
| E. | A device used for the measurement of mass |
| Answer» A. A manometric device used for measurement of vacumms | |
| 292. |
Ezy out is |
| A. | A tool for making round objects |
| B. | A taper reamer |
| C. | An instrument for measurement of out of roundness of objects |
| D. | A tool for removing broken bolts and studs from a hole |
| E. | A drill having two diameters |
| Answer» D. A tool for removing broken bolts and studs from a hole | |
| 293. |
Swab is |
| A. | A welding defect |
| B. | A forging die |
| C. | A rocess of manufacturing grinding wheels |
| D. | A tool used in foundry |
| E. | A gear cutter |
| Answer» D. A tool used in foundry | |
| 294. |
The function of a coolant in a metal cutting operation is |
| A. | To cool the job |
| B. | To cool the tool |
| C. | To reduce the friction at cutting point |
| D. | To obtain bright shining surface on the job |
| E. | None of the above |
| Answer» C. To reduce the friction at cutting point | |
| 295. |
In deriving relationship between thickness ratio, angle of shear plane and tool rake angle, which assumption is not required in orthogonal cutting |
| A. | tool cuts at constant speed |
| B. | the edge of the cutting tool is larger than width of the chip |
| C. | the width of chip is larger than its thickness |
| D. | None of the above |
| E. | Parting off |
| Answer» A. tool cuts at constant speed | |
| 296. |
The impedance of piezo-electric crystals is |
| A. | High |
| B. | Negligible |
| C. | Low |
| D. | Very low |
| E. | Average |
| Answer» A. High | |
| 297. |
Machining allowance in case of die casting is |
| A. | Same as in other methods of casting |
| B. | Generally not provided |
| C. | Small |
| D. | Very small |
| E. | Large |
| Answer» B. Generally not provided | |
| 298. |
Which of the following process has least power consumption in kW/cm2/min? |
| A. | Electro discharge machining |
| B. | Laser beam machining |
| C. | Plasma arc machining |
| D. | Ultrasonic machining |
| E. | Abrasive jet machine |
| Answer» C. Plasma arc machining | |
| 299. |
Extrusion is the process of |
| A. | Metal shaping on presses |
| B. | Pushing the heated billet of metal through the orifice |
| C. | Producing holes by arc |
| D. | Welding two dissimilar metals |
| E. | Marking cup shaped articles using the force of explosion |
| Answer» B. Pushing the heated billet of metal through the orifice | |
| 300. |
In electrical resistance welding cleaning of metals to be welded |
| A. | Is immaterial |
| B. | Is important |
| C. | Can be neglected |
| D. | Does not have any effect on the welding |
| E. | None of the above |
| Answer» B. Is important | |
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