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.
| 101. |
In die casting, machining allowance is |
| A. | Small |
| B. | Large |
| C. | Very large |
| D. | Not provided |
| Answer» E. | |
| 102. |
The metal is subjected to mechanical working for |
| A. | Refining grain size |
| B. | Reducing original block into desired shape |
| C. | Controlling the direction of flow lines |
| D. | All of these |
| Answer» E. | |
| 103. |
The operation of cutting a sheet of metal in a straight line along the length, is known as |
| A. | Plunging |
| B. | Notching |
| C. | Slitting |
| D. | Forming |
| Answer» D. Forming | |
| 104. |
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 | |
| 105. |
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 | |
| 106. |
In ________ welding, the weld may be made either from left to right or from right to left. |
| A. | Forehand |
| B. | Backhand |
| C. | Vertical |
| D. | None of these |
| Answer» D. None of these | |
| 107. |
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 | |
| 108. |
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. | |
| 109. |
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. | |
| 110. |
A mortise gauge is a |
| A. | Striking tool |
| B. | Planing tool |
| C. | Boring tool |
| D. | Marking tool |
| Answer» E. | |
| 111. |
The increase in hardness due to cold working, is called |
| A. | Age hardening |
| B. | Work hardening |
| C. | Induction hardening |
| D. | Flame hardening |
| Answer» C. Induction hardening | |
| 112. |
The type of file used for a wood work is |
| A. | Single cut file |
| B. | Double cut file |
| C. | Rasp cut file |
| D. | Any one of these |
| Answer» D. Any one of these | |
| 113. |
For gas welding, the pressure desired at the welding torch for oxygen is |
| A. | 7 to 103 kN/m² |
| B. | 70 to 280 kN/m² |
| C. | 280 to 560 kN/m² |
| D. | 560 to 840 kN/m² |
| Answer» C. 280 to 560 kN/m² | |
| 114. |
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 | |
| 115. |
The sand used for making cores is |
| A. | Green sand |
| B. | Dry sand |
| C. | Loam sand |
| D. | Oil sand |
| Answer» E. | |
| 116. |
A zinc diffusion process is called |
| A. | Galvanizing |
| B. | Anodizing |
| C. | Parkerising |
| D. | Sherardizing |
| Answer» E. | |
| 117. |
An oxidising process used for aluminium and magnesium articles is called |
| A. | Galvanizing |
| B. | Anodizing |
| C. | Parkerising |
| D. | Sherardizing |
| Answer» C. Parkerising | |
| 118. |
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 | |
| 119. |
Rotary swaging |
| A. | Is extensively used for making bolts and rivets |
| B. | Is used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work |
| C. | Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface |
| D. | Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part |
| Answer» C. Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface | |
| 120. |
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. | |
| 121. |
Seam 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» B. Multi-spot welding process | |
| 122. |
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 | |
| 123. |
In arc welding, the temperature of heat produced by the electric arc is of the order of |
| A. | 3000°C to 4000°C |
| B. | 4000°C to 5000°C |
| C. | 5000°C to 6000°C |
| D. | 6000°C to 7000°C |
| Answer» E. | |
| 124. |
Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes? |
| A. | Drawing |
| B. | Extrusion |
| C. | Rolling |
| D. | Extrusion and rolling |
| Answer» E. | |
| 125. |
Cast iron and steel pipes are produced by |
| A. | Slush casting |
| B. | Investment casting |
| C. | True centrifugal casting |
| D. | Die casting |
| Answer» D. Die casting | |
| 126. |
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 | |
| 127. |
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 | |
| 128. |
The flux commonly used in brazing is |
| A. | Zinc chloride |
| B. | Ammonium chloride |
| C. | Resin plus alcohol |
| D. | Borax |
| Answer» E. | |
| 129. |
The metal extrusion process is generally used for producing |
| A. | Uniform solid sections |
| B. | Uniform hollow sections |
| C. | Uniform solid and hollow sections |
| D. | Varying solid and hollow sections |
| Answer» D. Varying solid and hollow sections | |
| 130. |
When the dimension is expressed as 20 -0.025 ⁺⁰∙⁰³⁵, 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 | |
| 131. |
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. | |
| 132. |
The shrinkage allowance for cast iron pattern is |
| A. | 10 mm/m |
| B. | 16 mm/m |
| C. | 20 mm/m |
| D. | 26 mm/m |
| Answer» B. 16 mm/m | |
| 133. |
Swab is used for |
| A. | Smoothing and cleaning out depressions in the mould |
| B. | Cleaning the moulding sand |
| C. | Moistening the sand around the edge before removing pattern |
| D. | Reinforcement of sand in the top part of the moulding box |
| Answer» D. Reinforcement of sand in the top part of the moulding box | |
| 134. |
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as |
| A. | Die casting method |
| B. | Slush casting method |
| C. | Permanent mould casting method |
| D. | Centrifugal casting method |
| Answer» D. Centrifugal casting method | |
| 135. |
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 | |
| 136. |
Shift is a casting defect which |
| A. | Results in a mismatching of the top and bottom parts of a casting |
| B. | Results in general enlargement of a casting |
| C. | Occurs near the ingates as rough lumps on the surface of a casting |
| D. | Occurs as sand patches on the upper surface of a casting |
| Answer» B. Results in general enlargement of a casting | |
| 137. |
Sand wash is a casting defect which |
| A. | Results in a mismatching of the top and bottom parts of a casting |
| B. | Results in general enlargement of the casting |
| C. | Occurs near the ingates as rough lumps on the surface of a casting |
| D. | Occurs as sand patches on the upper surface of a casting |
| Answer» D. Occurs as sand patches on the upper surface of a casting | |
| 138. |
The dowels are |
| A. | Wooden nails |
| B. | Box nails |
| C. | Wire nails |
| D. | None of these |
| Answer» B. Box nails | |
| 139. |
A hacksaw blade is specified by its |
| A. | Length |
| B. | Material |
| C. | Width |
| D. | Number of teeth |
| Answer» B. Material | |
| 140. |
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 | |
| 141. |
A casting defect which occurs due to improper venting of sand is known as |
| A. | Cold shuts |
| B. | Blow holes |
| C. | Shift |
| D. | Swell |
| Answer» C. Shift | |
| 142. |
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 | |
| 143. |
The purpose of a riser is to |
| A. | Deliver molten metal into the mould cavity |
| B. | Act as a reservoir for the molten metal |
| C. | Feed the molten metal to the casting in order to compensate for the shrinkage |
| D. | Deliver the molten metal from pouring basin to gate |
| Answer» D. Deliver the molten metal from pouring basin to gate | |
| 144. |
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. | |
| 145. |
the most preferred process for casting gas turbine blades is |
| A. | Die casting |
| B. | Shell moulding |
| C. | Investment moulding |
| D. | Sand casting |
| Answer» C. Investment moulding | |
| 146. |
In a ________, both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram. |
| A. | Simple die |
| B. | Progressive die |
| C. | Combination die |
| D. | Compound die |
| Answer» D. Compound die | |
| 147. |
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 | |
| 148. |
During hot working of metals |
| A. | Porosity of the metal is largely eliminated |
| B. | Grain structure of the metal is refined |
| C. | Mechanical properties are improved due to refinement of grains |
| D. | All of the above |
| Answer» E. | |
| 149. |
The material which can be best cut with oxygen cutting process is |
| A. | Mild steel |
| B. | Brass |
| C. | Copper |
| D. | Aluminium |
| Answer» B. Brass | |
| 150. |
The mode of deformation of the metal during spinning is |
| A. | Bending |
| B. | Stretching |
| C. | Rolling and stretching |
| D. | Bending and stretching |
| Answer» E. | |