MCQOPTIONS
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MCQOPTIONS
This section includes 2171 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1151. |
The operation of straightening a curved sheet metal, is known as |
| A. | drawing |
| B. | squeezing |
| C. | coining |
| D. | planishing |
| Answer» E. | |
| 1152. |
In permanent mould casting method |
| A. | molten metal is poured in a metallic mould, retained in the mould long enough for the outer skin to solidify and finally mould is turned over to remove molten metal still in molten condition |
| B. | molten metal is poured and allowed to solidify while the mould is revolving |
| C. | molten metal is forced into mould under high pressure |
| D. | none of the above |
| Answer» E. | |
| 1153. |
The difference between the upper limit and lower limt of a dimension is called |
| A. | nominal size |
| B. | basic size |
| C. | actual size |
| D. | tolerance |
| Answer» E. | |
| 1154. |
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 | |
| 1155. |
The advantage of thermit welding is that |
| A. | all parts of the weld section are molten at the same time |
| B. | weld cools almost uniformly |
| C. | results in a minimum problem with internal residual stresses |
| D. | all of the above |
| Answer» E. | |
| 1156. |
In tungsten-inert gas arc welding, a __________ electrode is used. |
| A. | consumable |
| B. | non-consumable |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 1157. |
The vertical welding do not require plate edge preparation upto 16 mm thickness. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» B. Incorrect | |
| 1158. |
In welding magnesium with TIG arc welding, direct current with __________ is used. |
| A. | straight polarity |
| B. | reversed polarity |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 1159. |
Thermit, used in thermit welding, is a mixture of |
| A. | charcoal and iron oxide |
| B. | charcoal and aluminium |
| C. | iron oxide and aluminium |
| D. | charcoal, iron oxide and aluminium |
| Answer» D. charcoal, iron oxide and aluminium | |
| 1160. |
The temperature of the inner luminous cone of neutral flame is about |
| A. | 1000° C |
| B. | 1250° C |
| C. | 2100° C |
| D. | 3200° C |
| Answer» E. | |
| 1161. |
The correct sequence for preparing a billet for extrusion process is pickling, alkaline cleaning, phosphate coating and lubricating with reactive soap. |
| A. | Yes |
| B. | No |
| C. | Can't say |
| D. | None of these |
| Answer» B. No | |
| 1162. |
The brass and bronze are welded by __________ flame. |
| A. | neutral |
| B. | oxidising |
| C. | carburising |
| D. | all of these |
| Answer» C. carburising | |
| 1163. |
The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as |
| A. | hot piercing |
| B. | extrusion |
| C. | cold peening |
| D. | cold heading |
| Answer» D. cold heading | |
| 1164. |
Scab is a casting defect which occurs as sand patches on the upper surface of a casting. |
| A. | True |
| B. | False |
| C. | Can't say |
| D. | None of these |
| Answer» B. False | |
| 1165. |
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as |
| A. | shift |
| B. | sand wash |
| C. | swell |
| D. | scab |
| Answer» C. swell | |
| 1166. |
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 | |
| 1167. |
The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» B. Incorrect | |
| 1168. |
The operation of cutting of a flat sheet to the desired shape is called |
| A. | shearing |
| B. | piercing |
| C. | punching |
| D. | blanking |
| Answer» B. piercing | |
| 1169. |
The casting method adopted for ornaments and toys of non-ferrous alloys, is |
| A. | permanent mould casting |
| B. | slush casting |
| C. | die casting |
| D. | centrifugal casting |
| Answer» C. die casting | |
| 1170. |
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 | |
| 1171. |
Seam weiding is a |
| A. | continuous spot welding process |
| B. | multi-spot welding process |
| C. | arc welding process |
| D. | process used for joining round bars |
| Answer» B. multi-spot welding process | |
| 1172. |
The punch and die set up is __________ for punching and piercing operation. |
| A. | similar |
| B. | different |
| C. | Can't say |
| D. | None of these |
| Answer» B. different | |
| 1173. |
Scribing block is used to |
| A. | hold the round bars during marking |
| B. | check the trueness of flat surfaces |
| C. | locate the centres of round bars |
| D. | check the surface roughness |
| Answer» D. check the surface roughness | |
| 1174. |
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 | |
| 1175. |
In a __________ , two or more operations are performed simultaneously at the single stroke of the ram. |
| A. | simple die |
| B. | progressive die |
| C. | combination die |
| D. | compound die |
| Answer» C. combination die | |
| 1176. |
Spot welding is used for welding |
| A. | lap joints in plates having 0.025 mm to 1.25 mm thickness |
| B. | lap joints in plates having thickness above 3 mm |
| C. | butt joints in plates having 0.025 mm to 1.25 mm thickness |
| D. | butt joints in plates having thickness above 3 mm |
| Answer» B. lap joints in plates having thickness above 3 mm | |
| 1177. |
Neutral flame is usd to weld |
| A. | steel |
| B. | cast iron |
| C. | copper |
| D. | all of these |
| Answer» E. | |
| 1178. |
In a gas welding of mild steel using an oxy-acetylene flame, the total amount of acetylene consumed is 10 litre. The oxygen consumption from the cylinder is |
| A. | 5 litre |
| B. | 10 litre |
| C. | 15 litre |
| D. | 20 litre |
| Answer» C. 15 litre | |
| 1179. |
Loam sand is a mixture of |
| A. | 30% sand and 70% clay |
| B. | 50% sand and 50% clay |
| C. | 70% sand and 30% clay |
| D. | 90% sand and 10% clay |
| Answer» C. 70% sand and 30% clay | |
| 1180. |
In order to deliver molten metal from pouring basin to gate, a __________ is used. |
| A. | riser |
| B. | sprue |
| C. | core |
| D. | None of these |
| Answer» C. core | |
| 1181. |
Linde welding uses |
| A. | neutral flame and right-ward technique |
| B. | oxidising flame and left-ward technique |
| C. | neutral flame and left-ward technique |
| D. | carburising flame and right-ward technique |
| Answer» E. | |
| 1182. |
The sand used for making cores is |
| A. | green sand |
| B. | dry sand |
| C. | loam sand |
| D. | oil sand |
| Answer» E. | |
| 1183. |
A gimlet is a __________ tool. |
| A. | boring |
| B. | marking |
| C. | Can't say |
| D. | None of these |
| Answer» B. marking | |
| 1184. |
In spot welding, the distance between the nearest edge of the plate and centre of weld should be equal to |
| A. | d |
| B. | 1.5 d |
| C. | 3 d |
| D. | 6 d |
| Answer» C. 3 d | |
| 1185. |
A diamond pointed chisel is used for cutting |
| A. | flat surfaces |
| B. | grooves |
| C. | keyways |
| D. | V-shaped grooves |
| Answer» E. | |
| 1186. |
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct? |
| A. | The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction. |
| B. | The upper and bottom rolls rotate in the same direction whereas the middle roll rotate in opposite direction. |
| C. | The bottom and middle roll rotate in the same direction. |
| D. | any one of the above |
| Answer» C. The bottom and middle roll rotate in the same direction. | |
| 1187. |
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 | |
| 1188. |
Shrinkage allowance is made by adding to external dimensions and subtracting from internal dimensions. |
| A. | Agree |
| B. | Disagree |
| C. | Can't say |
| D. | None of these |
| Answer» B. Disagree | |
| 1189. |
The cold working of metals is carried out |
| A. | at the recrystallisation temperature |
| B. | below the recrystallisation temperature |
| C. | above the recrystallisation temperature |
| D. | at any temperature |
| Answer» C. above the recrystallisation temperature | |
| 1190. |
The material which can be best cut with oxygen cutting process is |
| A. | mild steel |
| B. | brass |
| C. | copper |
| D. | aluminium |
| Answer» B. brass | |
| 1191. |
A process used for making thin phosphate coating on steel is called parkerising. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» B. Incorrect | |
| 1192. |
A ring gauge is used to |
| A. | check the diameter of shafts or studs |
| B. | test the accuracy of holes |
| C. | check the clearance between two mating surfaces |
| D. | all of the above |
| Answer» B. test the accuracy of holes | |
| 1193. |
The consumable electrode is used in |
| A. | carbon arc welding |
| B. | submerged arc welding |
| C. | TIG arc welding |
| D. | MIG arc welding |
| Answer» E. | |
| 1194. |
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 | |
| 1195. |
Aluminium is the best material for making patterns because it is |
| A. | light in weight |
| B. | easy to work |
| C. | corrosion resistant |
| D. | all of these |
| Answer» E. | |
| 1196. |
In order to check the clearance between two mating surfaces, a __________ gauge should be used. |
| A. | ring |
| B. | plug |
| C. | feeler |
| D. | None of these |
| Answer» D. None of these | |
| 1197. |
Which of the following welding method uses a pool of molten metal? |
| A. | Carbon arc welding |
| B. | Submerged arc welding |
| C. | TIG arc welding |
| D. | MIG arc welding |
| Answer» C. TIG arc welding | |
| 1198. |
In spot welding, the spacing between two spot weld should not be less than |
| A. | d |
| B. | 1.5 d |
| C. | 3 d |
| D. | 6 d |
| Answer» D. 6 d | |
| 1199. |
Gagger is used for cleaning the moulding sand. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 1200. |
A two high rolling mill consists of two rolls which rotate |
| A. | at the same speed and in the same direction |
| B. | at the same speed but in opposite direction |
| C. | at different speeds and in the same direction |
| D. | at different speeds and in the opposite direction |
| Answer» C. at different speeds and in the same direction | |