MCQOPTIONS
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MCQOPTIONS
This section includes 455 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
*/*_When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be cleaned by? |
| A. | Washing it with water |
| B. | Rubbing on wood |
| C. | Washing it with dilute acid |
| D. | Using file card |
| Answer» E. | |
| 252. |
*/*_Projection welding is a? |
| A. | Continuous spot welding process |
| B. | Multi-spot welding process |
| C. | Arc welding process |
| D. | Process used for joining round bars |
| Answer» C. Arc welding process | |
| 253. |
*/*_When the dimension is expressed as 20¬≠-0.025 ‚Å∫‚Å∞‚à ô‚Å∞¬≥‚ŵ, then the basic size is? |
| A. | 20 mm |
| B. | 20.035 mm |
| C. | 20.025 mm |
| D. | 19.975 mm |
| Answer» B. 20.035 mm | |
| 254. |
*/*_The property of sand due to which the sand grains stick together is called? |
| A. | Collapsibility |
| B. | Permeability |
| C. | Cohesiveness |
| D. | Adhesiveness |
| Answer» D. Adhesiveness | |
| 255. |
*/*_Seam welding is best adopted for metal thickness ranging from? |
| A. | 0.025 to 3 mm |
| B. | 3 to 5 mm |
| C. | 5 to 8 mm |
| D. | 8 to 10 mm |
| Answer» B. 3 to 5 mm | |
| 256. |
*/*_In electric resistance welding, pressure applied varies from? |
| A. | 1 to 5 MPa |
| B. | 5 to 10 MPa |
| C. | 10 to 25 MPa |
| D. | 25 to 55 MPa |
| Answer» E. | |
| 257. |
*/*_The surface to be machined is marked on the pattern by? |
| A. | Red colour |
| B. | Yellow colour |
| C. | Black colour |
| D. | Blue colour |
| Answer» B. Yellow colour | |
| 258. |
*/*_When a pattern is made in three parts, the ________ is known as a drag.? |
| A. | Bottom part |
| B. | Middle part |
| C. | Top part |
| D. | None of these |
| Answer» B. Middle part | |
| 259. |
*/*_In order to ram the sand harder at the back of the mould and softer on the pattern face, a ________ is used.? |
| A. | Sand slinger |
| B. | Squeezing machine |
| C. | Jolt machine |
| D. | Stripper plate machine |
| Answer» C. Jolt machine | |
| 260. |
*/*_A diamond pointed chisel is used for cutting? |
| A. | Flat surfaces |
| B. | Grooves |
| C. | Key-ways |
| D. | V-shaped grooves |
| Answer» E. | |
| 261. |
*/*_The acetylene cylinder is usually painted with? |
| A. | Black colour |
| B. | White colour |
| C. | Maroon colour |
| D. | Yellow colour |
| Answer» D. Yellow colour | |
| 262. |
*/*_A rip saw? |
| A. | Is a two man saw |
| B. | Is used for cutting along the grains of wood |
| C. | Has a narrow blade with two wooden handles |
| D. | All of the above |
| Answer» C. Has a narrow blade with two wooden handles | |
| 263. |
*/*_The fullers are used? |
| A. | For finishing flat surfaces |
| B. | For necking down a piece of work |
| C. | For punching a hole |
| D. | To finish the punched hole |
| Answer» C. For punching a hole | |
| 264. |
*/*_A file removes the metal during? |
| A. | Forward stroke |
| B. | Return stroke |
| C. | Both forward and return strokes |
| D. | None of these |
| Answer» B. Return stroke | |
| 265. |
*/*_Which one of the following material will require the largest size of riser for the same size of casting?? |
| A. | Aluminium |
| B. | Cast iron |
| C. | Steel |
| D. | Copper |
| Answer» D. Copper | |
| 266. |
*/*_A hacksaw blade cuts on the? |
| A. | Forward stroke |
| B. | Return stroke |
| C. | Both forward and return strokes |
| D. | Cutting depends upon the direction of force |
| Answer» B. Return stroke | |
| 267. |
*/*_In blanking operation, the clearance is provided on? |
| A. | Punch |
| B. | Die |
| C. | Half on the punch and half on the die |
| D. | Either on punch or die depending upon designer's choice |
| Answer» B. Die | |
| 268. |
*/*_The consumable electrode is used in? |
| A. | Carbon arc welding |
| B. | Submerged arc welding |
| C. | TIG arc welding |
| D. | MIG arc welding |
| Answer» E. | |
| 269. |
*/*_The teeth of hacksaw blade are bent? |
| A. | Towards right |
| B. | Towards left |
| C. | Alternately towards right and left and every third or fourth left straight |
| D. | May be bent in any direction |
| Answer» D. May be bent in any direction | |
| 270. |
*/*_Tandem drawing of wires and tubes is necessary because? |
| A. | It is not possible to reduce at one stage |
| B. | Annealing is needed between stages |
| C. | Accuracy in dimensions is not possible otherwise |
| D. | Surface finish improves after every drawing stage |
| Answer» C. Accuracy in dimensions is not possible otherwise | |
| 271. |
*/*_In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.? |
| A. | Equal to |
| B. | Smaller than |
| C. | Larger than |
| D. | None of these |
| Answer» D. None of these | |
| 272. |
*/*_The surface to be left unmachined is marked on the pattern by? |
| A. | Red colour |
| B. | Yellow colour |
| C. | Black colour |
| D. | Blue colour |
| Answer» D. Blue colour | |
| 273. |
*/*_If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be? |
| A. | 10 mm/m |
| B. | 16 mm/m |
| C. | 20 mm/m |
| D. | 26 mm/m |
| Answer» E. | |
| 274. |
*/*_Piercing is an operation of cutting? |
| A. | A cylindrical hole in a sheet of metal by the punch and the die |
| B. | A hole (other than cylindrical) in a sheet of metal by the punch and the die |
| C. | A flat sheet to the desired shape |
| D. | A number of holes evenly spaced in a regular pattern on a sheet of metal |
| Answer» C. A flat sheet to the desired shape | |
| 275. |
*/*_When a pattern is made in three parts, the top part, is known as a? |
| A. | Drag |
| B. | Cheek |
| C. | Cope |
| D. | None of these |
| Answer» D. None of these | |
| 276. |
*/*_The adhesiveness is the property of sand due to which? |
| A. | It evolves a great amount of steam and other gases |
| B. | The sand grains stick together |
| C. | It clings to the sides of a moulding box |
| D. | None of these |
| Answer» D. None of these | |
| 277. |
*/*_A casting defect which results in general enlargement of a casting is known as? |
| A. | Shift |
| B. | Sand wash |
| C. | Swell |
| D. | Scab |
| Answer» D. Scab | |
| 278. |
%_Which of the following welding process uses non-consumable electrodes?_% |
| A. | TIG welding |
| B. | MIG welding |
| C. | Manual arc welding |
| D. | Submerged arc welding |
| Answer» B. MIG welding | |
| 279. |
%_The algebraic difference between the minimum limit and the basic size is called_% |
| A. | Actual deviation |
| B. | Upper deviation |
| C. | Lower deviation |
| D. | Fundamental deviation |
| Answer» D. Fundamental deviation | |
| 280. |
%_Linde welding uses_% |
| A. | Neutral flame and rightward technique |
| B. | Oxidizing flame and leftward technique |
| C. | Neutral flame and leftward technique |
| D. | Carburising flame and rightward technique |
| Answer» E. | |
| 281. |
%_When the file is moved to and fro over the work, it is known as_% |
| A. | Cross filing |
| B. | Draw filing |
| C. | Pull and push filing |
| D. | None of these |
| Answer» C. Pull and push filing | |
| 282. |
%_The process of decreasing the cross-section of a bar and increasing its length, is called_% |
| A. | Drawing down |
| B. | Upsetting |
| C. | Spinning |
| D. | Peening |
| Answer» B. Upsetting | |
| 283. |
%_The temperature at which the new grains are formed in the metal is called_% |
| A. | Lower critical temperature |
| B. | Upper critical temperature |
| C. | Eutectic temperature |
| D. | Recrystallisation temperature |
| Answer» E. | |
| 284. |
%_The instrument which has all the features of try-square, bevel protractor, rule and scriber, is_% |
| A. | Outside micrometer |
| B. | Inside micrometer |
| C. | Depth gauge micrometer |
| D. | Combination set |
| Answer» E. | |
| 285. |
%_The maximum flame temperature occurs_% |
| A. | At the outer cone |
| B. | At the inner cone |
| C. | Between the outer and inner cone |
| D. | At the torch tip |
| Answer» C. Between the outer and inner cone | |
| 286. |
%_In electric resistance welding, voltage required for heating is_% |
| A. | 1 to 5 volts |
| B. | 6 to 10 volts |
| C. | 11 to 20 volts |
| D. | 50 to 100 volts |
| Answer» C. 11 to 20 volts | |
| 287. |
%_The operation of straightening a curved sheet metal, is known as_% |
| A. | Drawing |
| B. | Squeezing |
| C. | Coining |
| D. | Planishing |
| Answer» E. | |
| 288. |
%_The machining allowance provided on patterns depends upon_% |
| A. | Type of casting metal |
| B. | Size and shape of casting |
| C. | Method of casting used |
| D. | All of these |
| Answer» E. | |
| 289. |
%_According to Indian standard specifications, 100 H6/g5 means that._% |
| A. | Basic size is 100 mm |
| B. | Actual size is 100 mm |
| C. | Difference between the actual size and basic size is 100 mm |
| D. | None of the above |
| Answer» B. Actual size is 100 mm | |
| 290. |
%_For arc welding_% |
| A. | Alternating current with high frequency is used |
| B. | Alternating current with low frequency is used |
| C. | Direct current is used |
| D. | Any one of these |
| Answer» D. Any one of these | |
| 291. |
%_The fullers are used_% |
| A. | For finishing flat surfaces |
| B. | For necking down a piece of work |
| C. | For punching a hole |
| D. | To finish the punched hole |
| Answer» C. For punching a hole | |
| 292. |
%_A rip saw_% |
| A. | Is a two man saw |
| B. | Is used for cutting along the grains of wood |
| C. | Has a narrow blade with two wooden handles |
| D. | All of the above |
| Answer» C. Has a narrow blade with two wooden handles | |
| 293. |
_ The consumable electrode is used in$? |
| A. | Carbon arc welding |
| B. | Submerged arc welding |
| C. | TIG arc welding |
| D. | MIG arc welding |
| Answer» E. | |
| 294. |
_ In blanking operation, the clearance is provided on$? |
| A. | Punch |
| B. | Die |
| C. | Half on the punch and half on the die |
| D. | Either on punch or die depending upon designer's choice |
| Answer» B. Die | |
| 295. |
_ A hacksaw blade cuts on the$? |
| A. | Forward stroke |
| B. | Return stroke |
| C. | Both forward and return strokes |
| D. | Cutting depends upon the direction of force |
| Answer» B. Return stroke | |
| 296. |
_ The teeth of hacksaw blade are bent$? |
| A. | Towards right |
| B. | Towards left |
| C. | Alternately towards right and left and every third or fourth left straight |
| D. | May be bent in any direction |
| Answer» D. May be bent in any direction | |
| 297. |
_ Which of the following statement is wrong?$? |
| A. | The hot chamber die casting machine is used for casting zinc, tin, lead and other low melting alloys. |
| B. | The cold chamber die casting machine is used for casting aluminium, magnesium, copper base alloys and other high melting alloys. |
| C. | The castings produced by centrifugal casting method have open and coarse grained structure. |
| D. | All of the above |
| Answer» D. All of the above | |
| 298. |
_ The fullers are used$? |
| A. | For finishing flat surfaces |
| B. | For necking down a piece of work |
| C. | For punching a hole |
| D. | To finish the punched hole |
| Answer» C. For punching a hole | |
| 299. |
_ Which one of the following material will require the largest size of riser for the same size of casting?$? |
| A. | Aluminium |
| B. | Cast iron |
| C. | Steel |
| D. | Copper |
| Answer» D. Copper | |
| 300. |
_ When a pattern is made in three parts, the ________ is known as a drag.$? |
| A. | Bottom part |
| B. | Middle part |
| C. | Top part |
| D. | None of these |
| Answer» B. Middle part | |