MCQOPTIONS
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MCQOPTIONS
This section includes 213 Mcqs, each offering curated multiple-choice questions to sharpen your Automobile Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
A sand employed on the faces of the pattern before moulding, is called |
| A. | Green sand |
| B. | Dry sand |
| C. | Loam sand |
| D. | Parting sand |
| Answer» E. | |
| 152. |
In a _______, the molten metal is poured and allowed to solidify while the mould is revolving. |
| A. | Die casting method |
| B. | Slush casting method |
| C. | Permanent mould casting method |
| D. | Centrifugal casting method |
| Answer» E. | |
| 153. |
The temperature of oxy-hydrogen flame is ________ oxyacetylene flame. |
| A. | Same as |
| B. | Less than |
| C. | More than |
| D. | None of these |
| Answer» C. More than | |
| 154. |
Lancing is the operation of |
| A. | Cutting a sheet of metal in a straight line along the length |
| B. | Removal of metal to the desired shape from the edge of a plate |
| C. | Cutting a sheet of metal through part of its length and then bending the cut portion |
| D. | Bending a sheet of metal along a curved axis |
| Answer» D. Bending a sheet of metal along a curved axis | |
| 155. |
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 | |
| 156. |
For cutting brass, the hacksaw blade should have ________ teeth per 25 mm. |
| A. | 14 |
| B. | 24 |
| C. | 32 |
| D. | 40 |
| Answer» B. 24 | |
| 157. |
The welding process used in joining mild steel shanks to high speed drills, is |
| A. | Spot welding |
| B. | Seam welding |
| C. | Flash butt welding |
| D. | Upset butt welding |
| Answer» D. Upset butt welding | |
| 158. |
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 | |
| 159. |
A diamond pointed chisel is used for cutting |
| A. | Flat surfaces |
| B. | Grooves |
| C. | Key-ways |
| D. | V-shaped grooves |
| Answer» E. | |
| 160. |
In forehand welding, the weld is made |
| A. | From left to right |
| B. | From right to left |
| C. | First from left to right and then from right to left |
| D. | Either from left to right or from right to left |
| Answer» C. First from left to right and then from right to left | |
| 161. |
When the dimension is expressed as, then the tolerance is |
| A. | 0.035 mm |
| B. | 0.025 mm |
| C. | 0.01 mm |
| D. | 0.06 mm |
| Answer» E. | |
| 162. |
Notching is the operation of |
| A. | Cutting a sheet of metal in a straight line along the length |
| B. | Removal of metal to the desired shape from the edge of a plate |
| C. | Cutting a sheet of metal through part of its length and then bending the cut portion |
| D. | Bending a sheet of metal along a curved axis |
| Answer» C. Cutting a sheet of metal through part of its length and then bending the cut portion | |
| 163. |
When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used. |
| A. | Horizontal core |
| B. | Vertical core |
| C. | Drop core |
| D. | Balanced core |
| Answer» D. Balanced core | |
| 164. |
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 | |
| 165. |
In order to produce uniform packing of sand in the moulds, a _________ is used. |
| A. | Sand slinger |
| B. | Squeezing machine |
| C. | Jolt machine |
| D. | Stripper plate machine |
| Answer» B. Squeezing machine | |
| 166. |
For smoothing and cleaning out depressions in the mould, a ________ is used. |
| A. | Slick |
| B. | Lifter |
| C. | Swab |
| D. | Gagger |
| Answer» C. Swab | |
| 167. |
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 | |
| 168. |
A jolt machine is used to |
| A. | Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould |
| B. | Ram the sand harder at the back of the mould and softer on the pattern face |
| C. | Produce uniform sand hardness throughout the mould |
| D. | Produce uniform packing of sand in the mould |
| Answer» B. Ram the sand harder at the back of the mould and softer on the pattern face | |
| 169. |
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 | |
| 170. |
For welding plates of thickness more than 12.5 mm, its edges |
| A. | Do not require bevelling |
| B. | Should be bevelled to a single-V or U-groove |
| C. | Should have a double-V or U-groove on one side |
| D. | Should have a double-V or U-groove on both sides |
| Answer» E. | |
| 171. |
In welding magnesium with TIG arc welding, direct current with ________ is used. |
| A. | Straight polarity |
| B. | Reversed polarity |
| C. | Both (A) and (B) |
| D. | None of these |
| Answer» C. Both (A) and (B) | |
| 172. |
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 | |
| 173. |
The oxygen cylinder is usually painted with |
| A. | Black colour |
| B. | White colour |
| C. | Maroon colour |
| D. | Yellow colour |
| Answer» B. White colour | |
| 174. |
The acetylene cylinder is usually painted with |
| A. | Black colour |
| B. | White colour |
| C. | Maroon colour |
| D. | Yellow colour |
| Answer» D. Yellow colour | |
| 175. |
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. | |
| 176. |
In a centrifugal casting method |
| A. | Core is made of sand |
| B. | Core is made of ferrous metal |
| C. | Core is made of nonferrous metal |
| D. | No core is used |
| Answer» E. | |
| 177. |
The diaphragm moulding machine is used to |
| A. | Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould |
| B. | Ram the sand harder at the back of the mould and softer on the pattern face |
| C. | Produce uniform packing of sand in the mould |
| D. | Give uniform sand hardness throughout the mould |
| Answer» E. | |
| 178. |
In __________ welding, the weld may be made either from left to right or from right to left. |
| A. | fore-hand |
| B. | back-hand |
| C. | vertical |
| D. | - |
| Answer» D. - | |
| 179. |
When a pattern is made in three parts, the bottom part is known as a cope. |
| A. | True |
| B. | False |
| C. | - |
| D. | - |
| Answer» C. - | |
| 180. |
The ferrous metals require more machining allowance than non-ferrous metals. |
| A. | True |
| B. | False |
| C. | - |
| D. | - |
| Answer» B. False | |
| 181. |
Galvanising is a |
| A. | zinc diffusion process |
| B. | process of coating zinc by hot dipping |
| C. | process used for making thin phosphate coating on steel |
| D. | none of the above |
| Answer» C. process used for making thin phosphate coating on steel | |
| 182. |
The tolerance produced by shell moulding process of casting is |
| A. | +0.05 mm |
| B. | ±0.2 mm |
| C. | +0.5 mm |
| D. | ±1 mm |
| Answer» C. +0.5 mm | |
| 183. |
A pattern maker's shrinkage rule considers |
| A. | all pattern allowances |
| B. | only shrinkage allowance |
| C. | all materials to be cast |
| D. | all materials of the pattern |
| Answer» C. all materials to be cast | |
| 184. |
In a centrifugal casting method, the impurities are collected in the centre of the casting. |
| A. | Yes |
| B. | No |
| C. | - |
| D. | - |
| Answer» B. No | |
| 185. |
In a die casting method, the molten metal is forced into mould under high pressure. |
| A. | Correct |
| B. | Incorrect |
| C. | - |
| D. | - |
| Answer» B. Incorrect | |
| 186. |
In back-hand welding, the angle between the welding torch and the work is kept as |
| A. | 30°-40° |
| B. | 40°-50° |
| C. | 50°-60° |
| D. | 60°-70° |
| Answer» C. 50°-60° | |
| 187. |
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. | |
| 188. |
A plug gauge is used to check the diameter of shafts and studs. |
| A. | Correct |
| B. | Incorrect |
| C. | - |
| D. | - |
| Answer» C. - | |
| 189. |
The blank diameter used in thread rolling will be |
| A. | equal to minor diameter of the thread |
| B. | equal to pitch diameter of the thread |
| C. | a little larger than the minor diameter of the thread |
| D. | a little larger than the pitch diameter of the thread |
| Answer» D. a little larger than the pitch diameter of the thread | |
| 190. |
In average work, the tolerance produced by investment casting method is |
| A. | ±0.05 mm |
| B. | +0.2 mm |
| C. | +05 mm |
| D. | +1 mm |
| Answer» B. +0.2 mm | |
| 191. |
The bloom is smaller than a billet. |
| A. | True |
| B. | False |
| C. | - |
| D. | - |
| Answer» C. - | |
| 192. |
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. | |
| 193. |
When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used. |
| A. | horizontal core |
| B. | vertical core |
| C. | drop core |
| D. | balanced core |
| Answer» D. balanced core | |
| 194. |
Metal patterns are used for |
| A. | small castings |
| B. | large castings |
| C. | complicated castings |
| D. | large scale production of castings |
| Answer» E. | |
| 195. |
The centrifugal casting method, is used for casting articles of |
| A. | symmetrical shape about vertical axis |
| B. | symmetrical shape about horizontal axis |
| C. | irregular shape |
| D. | non-ferrous metal only |
| Answer» C. irregular shape | |
| 196. |
The cold chisels are made by |
| A. | drawing |
| B. | rolling |
| C. | piercing |
| D. | forging |
| Answer» E. | |
| 197. |
The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate. |
| A. | Correct |
| B. | Incorrect |
| C. | - |
| D. | - |
| Answer» C. - | |
| 198. |
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 | |
| 199. |
Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes? |
| A. | Drawing |
| B. | Extrusion |
| C. | Rolling |
| D. | Extrusion and rolling |
| Answer» E. | |
| 200. |
The temperature of oxy-hydrogen flame is __________ oxy-acetylene flame. |
| A. | same as |
| B. | less than |
| C. | more than |
| D. | - |
| Answer» C. more than | |