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MCQOPTIONS
This section includes 2670 Mcqs, each offering curated multiple-choice questions to sharpen your Railways knowledge and support exam preparation. Choose a topic below to get started.
| 851. |
Consider the following statements related to piercing and blanking: (1) Shear on the punch reduces the maximum cutting force. (2) Shear increases the capacity of the press needed. (3) Shear increases the life of the punch. (4) The total energy needed to make the cut remains unaltered due to provision of shear. Which of the above statements are correct? |
| A. | 1 and 2 |
| B. | 1 and 4 |
| C. | 2 and 3 |
| D. | 3 and 4 |
| Answer» C. 2 and 3 | |
| 852. |
Which of the following statements are the salient features of hydrostatic extrusion? (1) It is suitable for soft and ductile material (2) It is suitable for high-strength super-alloys (3) The billet is inserted into the extrusion chamber and pressure is applied by a ram to extrude the billet through the die (4) The billet is inserted into the extrusion chamber where it is surrounded by a suitable liquid. The billet is extruded through the die by applying pressure to the liquid. Select the correct answer using the code given below: Codes: |
| A. | 1 and 3 |
| B. | 1 and 4 |
| C. | 2 and 3 |
| D. | 2 and 4 |
| Answer» D. 2 and 4 | |
| 853. |
In the forging operation, fullering is done to: |
| A. | Draw out the material |
| B. | Bend the material |
| C. | Upset the material |
| D. | Extrude the material. |
| Answer» B. Bend the material | |
| 854. |
Match List-I (components of a table fan) with List-II (Manufacturing processes) and select the correct answer using the codes given below the lists: List-I List-II A. Base with stand 1. Stamping and pressing B. Blade 2. Wire drawing C. Armature coil wire 3. Turning D. Armature shaft 4. Casting Codes: |
| A. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| B. | A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 |
| C. | A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 |
| D. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| Answer» E. | |
| 855. |
Consider the following statements: In forward extrusion process: (1) The ram and the extruded product travel in the same direction. (2) The ram and the extruded product travel in the opposite direction. (3) The speed of travel of the extruded product is same as that of the ram. (4) The speed of travel of the extruded, product is greater than that of the ram. Which of these statements are correct? |
| A. | 1 and 3 |
| B. | 2 and 3 |
| C. | 1 and 4 |
| D. | 2 and 4 |
| Answer» D. 2 and 4 | |
| 856. |
In the rolling process, roll separating force can be decreased by: |
| A. | Reducing the roll diameter |
| B. | Increasing the roll diameter |
| C. | Providing hack-up rolls |
| D. | Increasing the friction between the rolls and the metal. |
| Answer» D. Increasing the friction between the rolls and the metal. | |
| 857. |
The correct sequence of the given processes in manufacturing by powder metallurgy is: |
| A. | Blending, compacting sintering and sizing |
| B. | Blending, compacting, sizing and sintering |
| C. | Compacting, sizing, blending and sintering |
| D. | Compacting, blending, sizing and sintering. |
| Answer» B. Blending, compacting, sizing and sintering | |
| 858. |
Which one of the following is the correct temperature range for hot extrusion o aluminium? |
| A. | \[300-340{}^\circ C\] |
| B. | \[350-400{}^\circ C\] |
| C. | \[430-480{}^\circ C\] |
| D. | \[550-650{}^\circ C\] |
| Answer» C. \[430-480{}^\circ C\] | |
| 859. |
Consider the following operations involved in forging a hexagonal bolt from a round bar stock, whose diameter is equal to the bolt diameter: 1. Flattening 2. Upsetting 3. Swaging 4. Cambering The correct sequence of these operations is: |
| A. | 1, 2, 3, 4 |
| B. | 2, 3, 4, 1 |
| C. | 2, 4, 3, 1 |
| D. | 3, 2, 1, 4 |
| Answer» B. 2, 3, 4, 1 | |
| 860. |
Match List-1 with List-11 and select the correct answer using the codes given below the Lists: List-I List-II A. Drawing 1. Soap solution B. Rolling 2. Camber C. Wire drawing 3. Pilots D. Sheet metal operations using progressive dies 4. Crate 5. Ironing Codes: |
| A. | A\[\to \]2, B\[\to \]5, C\[\to \]1, D\[\to \]4 |
| B. | A\[\to \]4, B\[\to \]1, C\[\to \]5, D\[\to \]3 |
| C. | A\[\to \]5, B\[\to \]2, C\[\to \]3, D\[\to \]4 |
| D. | A\[\to \]5, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| Answer» E. | |
| 861. |
Match List-I with List-II and select the correct answer using the codes given below the List: List-I List-II A. Die sinking 1. Abrasive jet machining B. Deburring 2. Laser beam machining C. Fine hole drilling (thin materials) 3. EDM D. Cutting/sharpening hard materials 4. Ultrasonic machining 5. Electro chemical grinding Codes: |
| A. | A\[\to \]3, B\[\to \]5, C\[\to \]4, D\[\to \]1 |
| B. | A\[\to \]2, B\[\to \]4, C\[\to \]1, D\[\to \]5 |
| C. | A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| D. | A\[\to \]4, B\[\to \]5, C\[\to \]1, D\[\to \]5 |
| Answer» B. A\[\to \]2, B\[\to \]4, C\[\to \]1, D\[\to \]5 | |
| 862. |
Consider the following statements: In comparison to hot working, in cold working 1. Higher forces are required. 2. No heating is required. 3. Less ductility is required. 4. Better surface finish is obtained. Which of the statements given above are correct? |
| A. | 1, 2 and 3 |
| B. | 2 and 4 |
| C. | 1 and 3 |
| D. | 2, 3 and 4 |
| Answer» B. 2 and 4 | |
| 863. |
Consider the following processes for the manufacture of gears: 1. Casting 2. Powder metallurgy 3. Machining from bar stock 4. Closed die forging The correct sequence in increasing order of bending strength of gear teeth is: |
| A. | 1, 2, 3, 4 |
| B. | 1, 2, 4, 3 |
| C. | 2, 1, 4, 3 |
| D. | 2, 1, 3, 4 |
| Answer» E. | |
| 864. |
In powder metallurgy, the operation carried out to improve the bearing property of a bush is called: |
| A. | Infiltration |
| B. | impregnation |
| C. | Plating |
| D. | heat treatment |
| Answer» B. impregnation | |
| 865. |
Which of the following components can be manufactured by power metallurgy methods? 1. Carbide tool tips 2. Bearings 3. Filters 4. Brake linings. Select the correct answer using the codes given below: |
| A. | 1, 3 and 4 |
| B. | 2 and 3 |
| C. | 1, 2 and 4 |
| D. | 1, 2, 3 and 4 |
| Answer» E. | |
| 866. |
In wire drawing process, the bright shining surface on the wire is obtained if one: |
| A. | Does not use a lubricant |
| B. | Low tooling cost |
| C. | Uses thick paste lubricant |
| D. | Use thin fluid lubricant. |
| Answer» E. | |
| 867. |
Match List-I with List-II and select the correct 6 answer List-I (Metal forming-process) List-II (Associated force) A. Wire drawing 1. Shear force B. Extrusion 2. Tensile force C. Blanking 3. Compressive force D. Bending 4. Spring back force Codes: |
| A. | A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| B. | A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 |
| C. | A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 |
| D. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| Answer» D. A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 | |
| 868. |
Cold working produces the following effects: 1. Stresses are set up in metal 2. Grain structure gets distorted 3. Strength and hardness of the metal are decreased 4. Surface finish is reduced Which of these statements are correct? |
| A. | 1 and 2 |
| B. | 1, 2 and 3 |
| C. | 3 and 4 |
| D. | 1 and 4. |
| Answer» B. 1, 2 and 3 | |
| 869. |
Metal extrusion process is generally used for producing: |
| A. | Uniform solid sections |
| B. | Uniform hollow sections |
| C. | Uniform solid and hollow section |
| D. | Varying solid and hollow sections. |
| Answer» E. | |
| 870. |
In drop forging, forging is done by dropping: |
| A. | The work piece at high velocity |
| B. | The hammer at high velocity |
| C. | The die with hammer at high velocity |
| D. | A weight on hammer to produce the requisite impact. |
| Answer» D. A weight on hammer to produce the requisite impact. | |
| 871. |
The mode of deformation of the metal during spinning is: |
| A. | Bending |
| B. | Stretching |
| C. | Rolling and stretching |
| D. | Bending and stretching. |
| Answer» E. | |
| 872. |
Which of the following pairs of process and draft are correctly matched? 1. Rolling............ 2 2. Extrusion............ 50 3. Forging ...........4 Select the correct answer using the codes given below: |
| A. | 1, 2 and 3 |
| B. | 1 and 2 |
| C. | 1 and 3 |
| D. | 2 and 3 |
| Answer» B. 1 and 2 | |
| 873. |
Match List-I with List-II and select the correct answer using the codes given below the List: List-I (Metal forming process) List-II (A similar process) A. Blanking 1. Wire drawing B. Coining 2. Piercing C. Hemming 3. Embossing D. Cup drawing 4 Rolling 5. Deep drawing Codes: |
| A. | A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 |
| B. | A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 |
| C. | A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]5 |
| D. | A\[\to \]3, B\[\to \]3, C\[\to \]1, D\[\to \]5 |
| Answer» D. A\[\to \]3, B\[\to \]3, C\[\to \]1, D\[\to \]5 | |
| 874. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I (Match Property) List-II (Related to) A. Malleability 1. Wire drawing B. Hardness 2. Impact loads C. Resilience 3. Cold rolling D. Isotropy 4. Indentation 5. Direction Codes: |
| A. | A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| B. | A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]5 |
| C. | A\[\to \]5, B\[\to \]4, C\[\to \]2, D\[\to \]3 |
| D. | A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]5 |
| Answer» C. A\[\to \]5, B\[\to \]4, C\[\to \]2, D\[\to \]3 | |
| 875. |
Which one of the following manufacturing process requires the provision of 'gutters? |
| A. | Closed die forging |
| B. | Centrifugal casting |
| C. | Investment casting |
| D. | Impact extrusion. |
| Answer» B. Centrifugal casting | |
| 876. |
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 large than the minor diameter of the thread |
| D. | A little large than the pitch diameter of the thread. |
| Answer» C. A little large than the minor diameter of the thread | |
| 877. |
The extrusion process(es) used for the production of toothpaste tube is/are 1. Tube extrusion 2. Forward extrusion 3. Impact extrusion Select the correct answer using the codes given below: Codes: |
| A. | 1 only |
| B. | 1 and 2 |
| C. | 2 and 3 |
| D. | 3 only |
| Answer» E. | |
| 878. |
In order to get uniform thickness of the plate by rolling process, one provides: |
| A. | Camber on the rolls |
| B. | Offset on the rolls |
| C. | Hardening of the rolls |
| D. | Antifriction bearings |
| Answer» B. Offset on the rolls | |
| 879. |
Tandem drawing of wires and tubes is necessary because: |
| A. | It is possible to reduce at one stage |
| B. | Annealing is needed between stages |
| C. | Accuracy in dimension is not possible otherwise |
| D. | Surface finish improves after drawing stage. |
| Answer» B. Annealing is needed between stages | |
| 880. |
In sheet metal work, the cutting force on the tool can he reduced by: |
| A. | Grinding the cutting edges sharp |
| B. | Increasing the hardness of tool |
| C. | Providing shear angle on tool |
| D. | Increasing the hardness of die. |
| Answer» D. Increasing the hardness of die. | |
| 881. |
A moving mandrel is used in: |
| A. | Wire drawing |
| B. | Tube drawing |
| C. | Metal cutting |
| D. | Forging. |
| Answer» C. Metal cutting | |
| 882. |
Consider the following statements: Roll forces in rolling can be reduced by 1. Reducing friction 2. Using large diameter roller to increase the co 3. Taking smaller reductions per pass to reduce the contact area. Which of the statements given above are correct? |
| A. | 1 and 2 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 |
| Answer» E. | |
| 883. |
Match List-I with List-II and select the correct answer using the code given below the list: List-I (Type of Rolling Mill) List-II (Characteristic) A. Two high non reversing mills 1. Middle role rotates by friction B. There high mills 2. By small working roll, power for rolling is reduced C. Flour high mills 3. Rolls of equal size are rotated only in one direction D. Cluster mills 4. Diameter of working roll is very small Codes: |
| A. | A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 |
| B. | A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 |
| C. | A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1 |
| D. | A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]4 |
| Answer» B. A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 | |
| 884. |
Consider the following steps in forging a connecting rod from bar stock: 1. Blocking 2. Trimming 3. Finishing 4. Edging Select the correct sequence of these operations using the codes given below: Codes: |
| A. | \[1-2-3-4\] |
| B. | \[2-3-4-1\] |
| C. | \[3-4-1-2\] |
| D. | \[4-1-3-2\] |
| Answer» E. | |
| 885. |
Which one of the correct relationship between surface velocity of the roils\[({{V}_{r}})\], entrance velocity of work \[({{V}_{0}})\] and exit velocity of work \[({{V}_{f}})\] in rolling? |
| A. | \[{{V}_{0}}<{{V}_{r}}<{{V}_{f}}\] |
| B. | \[{{V}_{f}}<{{V}_{r}}<{{V}_{0}}\] |
| C. | \[{{V}_{r}}<{{V}_{f}}<{{V}_{0}}\] |
| D. | \[{{V}_{0}}<{{V}_{f}}<{{V}_{r}}\] |
| Answer» B. \[{{V}_{f}}<{{V}_{r}}<{{V}_{0}}\] | |
| 886. |
Which one of the following processes necessarily requires mandrel of requisite diameter to form the internal hole? |
| A. | Hydrostatic extrusion |
| B. | Tube drawing |
| C. | Swaging |
| D. | Wire drawing |
| Answer» B. Tube drawing | |
| 887. |
The tooling cost is highest in which one of the following methods of plastic processing? |
| A. | Extrusion |
| B. | Casting |
| C. | Compression molding |
| D. | Injection molding |
| Answer» E. | |
| 888. |
Consider the following steps involved in conditioning Of metal powers in powder metallurgy techniques: 1. Pulverization 2. Blending or mixing 3. Screening 4. Rieat Treatment. Which one of the following is the correct sequence of the above steps? |
| A. | \[1-2-3-4\] |
| B. | \[2-3-4-1\] |
| C. | \[3-4-1-2\] |
| D. | \[4-1-3-2\] |
| Answer» B. \[2-3-4-1\] | |
| 889. |
What is the process of making sheet metal components to the contour of a die by making use of an explosive impact known as: |
| A. | Explosive cladding |
| B. | explosive welding |
| C. | Explosive forming |
| D. | explosive joining |
| Answer» D. explosive joining | |
| 890. |
What is the force required to be exerted by the punch in order to shear out the blank (for a circular disc) of 20 mm diameter and 1.5 mm thickness and having a shear strength equal to 300 MPa? |
| A. | 9.0 kN |
| B. | 18.0 kN |
| C. | 28.3 kN |
| D. | 45.0 kN |
| Answer» D. 45.0 kN | |
| 891. |
How are tooth-paste capsules produced? |
| A. | By boring operation |
| B. | By tube hiring operation |
| C. | By impact extrusion |
| D. | By tube drawing. |
| Answer» D. By tube drawing. | |
| 892. |
For calculating the blank diameter D for thin cylindrical shell of outer diameter d and with height of the shall h, which one of the following formulae is used when d 220r, where r is the comer radius on the punch? |
| A. | \[D=\sqrt{{{d}^{2}}+4d{{h}^{2}}}\] |
| B. | \[D=\sqrt{{{d}^{2}}+4dh-0.5r}\] |
| C. | \[D=\sqrt{{{d}^{2}}+4dh-r}\] |
| D. | \[D=\sqrt{{{d}^{2}}+4dh-1.5r}\] |
| Answer» B. \[D=\sqrt{{{d}^{2}}+4dh-0.5r}\] | |
| 893. |
Which one of the following is the correct statement? |
| A. | Extrusion is used for the manufacture of seamless tubes |
| B. | Extrusion is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work |
| C. | Extrusion is used to improve fatigue resistance of the metal by setting up compressive stresses on its surface |
| D. | Extrusion comprises pressing the metal insidea chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part. |
| Answer» E. | |
| 894. |
Which metal forming process is used for manufacture of long steel wire? |
| A. | Deep drawing |
| B. | forging |
| C. | Drawing |
| D. | extrusion. |
| Answer» D. extrusion. | |
| 895. |
Match List-I (Type of Forging) with List-II (Operation) and select the correct answer using the code given below the Lists: List-I (Type of Forging) List-II (Operation) A. Drop Forging 1. Metal is gripped in the dies and pressure is applied on the heated end B. Press Forging 2. Squeezing action C. Upset forging 3. Metal is placed between rollers and pushed D. Roll Forging 4. Repeated hammer Codes: |
| A. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| B. | A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 |
| C. | A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| D. | A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]4 |
| Answer» B. A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 | |
| 896. |
The process of removing the burrs of flash from a forged component in drop forging is called: |
| A. | Swaging |
| B. | perforating |
| C. | Trimming |
| D. | fettling. |
| Answer» D. fettling. | |
| 897. |
Which of the following are the characteristics of extrusion process 1. Faster speed of production 2. Good surface finish 3. Dimensions can be maintained with close tolerances 4. Mechanical properties of the extruded products are inferior to that of the roiled products Select the correct answer using the codes given below: |
| A. | 1 and 2 |
| B. | 1, 2 and 3 |
| C. | 3 and 4 |
| D. | 1 and 4. |
| Answer» E. | |
| 898. |
Match List-I (Press-part) with List-II (Function) select the correct answer using the codes given below List-I (Press-part) List-I (Function) A. Punch plate 1. Assisting withdrawal of the punch B. Stripper 2. Advancing the work-piece through correct distance C. Stopper 3. Ejection of the work-piece from die cavity D. Knock out 4. Holding the small punch in the proper position Codes: |
| A. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| B. | A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 |
| C. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| D. | A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 |
| Answer» B. A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 | |
| 899. |
Which one of the following temperatures is exactly suited to carry out hot working processes? |
| A. | Room temperature |
| B. | Temperature of recovery stage |
| C. | Temperature above recrystallization stage |
| D. | Temperature of grain growth stage |
| Answer» D. Temperature of grain growth stage | |
| 900. |
Which of the following are included in the finishing operations for porous bearing? 1. Infiltration 2. Sizing 3. Heat treatment 4. Coining Select the correct answer using the code given below: |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 2 and 4 |
| D. | 1 and 4 |
| Answer» B. 2 and 3 | |