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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.
| 2501. |
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. | |
| 2502. |
In deciding the clearance between punch and die in press work in shearing, the following rule is helpful: |
| A. | Punch size controls hole size, die size controls blank size |
| B. | Punch size controls both hole size and blank size |
| C. | die size controls both size and blank size |
| D. | Die size, controls hole size, punch size controls blank. |
| Answer» E. | |
| 2503. |
Match List-I (Operation) with List-II (Explanation) and select the correct answer using the codes given below the Lists: List-I (Operation) List-II (Explanation) A. Beading 1. The edge of the sheet metal is bent into the cavity of a die B. Flanging 2. The process of punching a hole first and then expanding into a flange C. Hemming 3. The edge of the sheet metal is folded over itself D. Roll Forming 4. Bending continuous lengths of sheet metal 5. The process of bending the edges of sheet metals Codes: |
| A. | A\[\to \]1, B\[\to \]5, C\[\to \]3, D\[\to \]4 |
| B. | A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| C. | A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 |
| D. | A\[\to \]4, B\[\to \]5, C\[\to \]1, D\[\to \]3 |
| Answer» E. | |
| 2504. |
Match List-I (Forging operations) with List-II (Descriptions) and select the correct answer using the codes given below the Lists: List-I List-II A. Flattening 1. Thickness is reduced continuously at different sections along at length B. Drawing 2. Metal is displaced away from centre, reducing thickness in middle and increasing length C. Fullering 3. Rod is pulled through a die D. Wire drawing 4. Pressing a workpiece between two flat dies Codes: |
| A. | A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]4 |
| B. | A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| C. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]4 |
| D. | A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| Answer» C. A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]4 | |
| 2505. |
A house-top water tank is made of fiat plates and is full to the brim. Its height its twice that of any side. The ratio of force on the bottom of the tank to that on any side will be: |
| A. | 4 |
| B. | 2 |
| C. | 1 |
| D. | ½ |
| Answer» D. ½ | |
| 2506. |
A circular annular plate having outer and inner diameters of 1.4 m and 0.6 respectively is immersed in water with its plane making an angle of \[60{}^\circ \] with the horizontal. The centre of the circular annular plate is 1.85 m below the free surface. The hydrostatic thrust on one side of the plate is: |
| A. | 1975 N |
| B. | 19.75 N |
| C. | 11.4 N |
| D. | 22.8 N |
| Answer» E. | |
| 2507. |
A stepped cylindrical container is filled with a liquid as shown in the given figure. The container with its axis vertical, is first placed with its larger diameter downward and then upward. The ratio of the forces at the bottom in the two cases will be: |
| A. | \[\frac{1}{2}\] |
| B. | 1 |
| C. | 2 |
| D. | 4 |
| Answer» E. | |
| 2508. |
Consider the following forces acting on a finish 1 turning tool: 1. Feed force 2. Thrust force 3. Cutting force. The correct sequence of the decreasing order of the magnitudes of these forces is: |
| A. | 1, 2, 3 |
| B. | 2, 3, 1 |
| C. | 3, 1, 2 |
| D. | 3, 2, 1 |
| Answer» B. 2, 3, 1 | |
| 2509. |
Which one of the following processes does not cause tool wear? |
| A. | Ultrasonic machining |
| B. | Electrochemical machining |
| C. | Electric discharge machining |
| D. | Anode mechanical machining |
| Answer» C. Electric discharge machining | |
| 2510. |
The rake angle in a twist drill: |
| A. | Varies from minimum near the dead centre to a maximum value at the periphery |
| B. | Is maximum at the dead centre and zero at the periphery |
| C. | Is constant at every point of the cutting edge |
| D. | Is a function of the size of the chisel edge |
| Answer» D. Is a function of the size of the chisel edge | |
| 2511. |
Which of the following statements are correct? 1. A boring machine is suitable for a job shop 2. A jig boring machine is designed specially for doing more accurate work when compared to a vertical milling machine 3. A vertical precision boring machine is suitable for boring holes in cylinder blocks and liners |
| A. | 1, 2 and 3 |
| B. | 1 and 2 |
| C. | 2 and 3 |
| D. | 1 and 3 |
| Answer» D. 1 and 3 | |
| 2512. |
Grinding wheel is said to be loaded when the: |
| A. | Metal particles get embedded in the wheel surface blocking the interspaces between cutting grains |
| B. | Hounding material comes on the surface and the wheel becomes blunt |
| C. | workpiece being ground comes to a stop in cylindrical grinding |
| D. | Grinding wheel stops because of very large depth of cut |
| Answer» B. Hounding material comes on the surface and the wheel becomes blunt | |
| 2513. |
A grinding wheel of 150 mm diameter is rotating at 3000 rpm. The grinding speed is: |
| A. | \[7.5\,\pi \,\text{m/s}\] |
| B. | \[15\,\pi \,\text{m/s}\] |
| C. | \[45\,\pi \text{m/s}\] |
| D. | \[450\,\pi \,\text{m/s}\] |
| Answer» B. \[15\,\pi \,\text{m/s}\] | |
| 2514. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I (Product) List-II (Process of Manufacture) A. Automobile piston in aluminium alloy 1. Pressure die-casting B. Engine crankshaft spheroidal graphite-iron casting 2. Gravity die-casting C. Carburettor housing in aluminium alloy 3. Sand casting D. Cast titanium blades 4. Precision investment easting 5. Shell moulding. Codes: |
| A. | A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]5 |
| B. | A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]5 |
| C. | A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 |
| D. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| Answer» B. A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]5 | |
| 2515. |
In a milling operation two side milling cutters are mounted with a desired distance between them so that both sides of a workpiece can he milled simultaneously. This set-up is called; |
| A. | Gang milling |
| B. | straddle milling |
| C. | String milling |
| D. | side milling |
| Answer» B. straddle milling | |
| 2516. |
The effects of setting a boring tool above centre height leads to a/an: |
| A. | Increase in the effective rake angle and a decrease in the effective clearance angle |
| B. | Increase in both effective rake angle and effective clearance angle |
| C. | Decrease in the effective rake angle and an increase in the effective clearance angle |
| D. | Decrease in both effective rank angle and effective clearance angle |
| Answer» B. Increase in both effective rake angle and effective clearance angle | |
| 2517. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I (Wear type) List-II (Associated mechanism) A. Abrasive wear 1. Galvanic action B. Adhesive wear 2. Polughing action C. Electrolytic wear 3. Molecular transfer D. Diffusion wear 4. Plastic deformation 5. Metallic bond. Codes: |
| A. | A\[\to \]2, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| B. | A\[\to \]5, B\[\to \]5, C\[\to \]1, D\[\to \]3 |
| C. | A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 |
| D. | A\[\to \]4, B\[\to \]2, C\[\to \]3, D\[\to \]4 |
| Answer» B. A\[\to \]5, B\[\to \]5, C\[\to \]1, D\[\to \]3 | |
| 2518. |
The straight grades of cemented carbide cutting tool materials contain: |
| A. | Tungsten carbide only |
| B. | Tungsten carbide and titanium carbide |
| C. | Tungsten carbide and cobalt |
| D. | Tungsten carbide and coal carbide |
| Answer» D. Tungsten carbide and coal carbide | |
| 2519. |
The compositions of some of the alloy steels are as under: 1. 18 W 4 Ct 1 V 2. 12 Mo I W 4 Cr IV 3. 6 Mo 6 W 4 Cr 1 V 4. 18 W 8 Cr IV The compositions of commonly used high speed steels would in clude: |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 1 and 4 |
| D. | 1 and 3 |
| Answer» D. 1 and 3 | |
| 2520. |
Consider the following machine tools: 1. Hobbing machine 2. Gear shaping machine 3. Broaching machine The teeth of internal spur gears can be cut in: |
| A. | 1, 2 and 3 |
| B. | 1 and 2 |
| C. | 1 and 3 |
| D. | 2 and 3 |
| Answer» E. | |
| 2521. |
Consider the following operations: 1. Cutting key ways on shafts 2. Cutting external screw threads 3. Cutting teeth of spur gears 4. Cutting external splines Those which can be performed with milling cutters would include: |
| A. | 1 and 2 |
| B. | 2, 3 and 4 |
| C. | 1 and 3 |
| D. | 1, 2, 3 and 4 |
| Answer» D. 1, 2, 3 and 4 | |
| 2522. |
Enlarging an existing circular hole with rotating single point tool is called: |
| A. | Boring |
| B. | drilling |
| C. | Reaming |
| D. | internal turning |
| Answer» B. drilling | |
| 2523. |
Gear lapping is: |
| A. | An operation after heat treatment |
| B. | An operation prior to heat treatment |
| C. | An independent operation for gear reconditioning |
| D. | None of the above |
| Answer» B. An operation prior to heat treatment | |
| 2524. |
A drill for drilling deep holes in aluminium should have: |
| A. | High helix angle |
| B. | taper shank |
| C. | Small point angle |
| D. | no lip |
| Answer» B. taper shank | |
| 2525. |
In metal cutting, use of low feeds and high cutting speeds is desired when the objective is: |
| A. | High metal removal rate |
| B. | Dry machining tool |
| C. | Use of soft cutting tool |
| D. | Surface finish |
| Answer» E. | |
| 2526. |
Tool geometry of a single point cutting tool is specified by the following elements: 1. Back rake angle 2. Side rake angle 3. End cutting code angle 4. Side cutting code angle 5. Side relief angle 6. End relief angle 7. Nose radius The correct sequence of these tool elements used for correctly specifying tool geometry is: |
| A. | 1, 2, 3, 6, 5, 4, 7 |
| B. | 1, 2, 6, 5, 3, 4, 7 |
| C. | 1, 2, 5, 6, 3, 4, 7 |
| D. | 1, 2, 6, 3, 4, 7 |
| Answer» C. 1, 2, 5, 6, 3, 4, 7 | |
| 2527. |
What is the correct sequence of the following parameters in order of their maximum to minimum influence on tool life? 1. Feed rate 2. Depth of cut 3. Cutting speed Select the correct answer using the codes below: |
| A. | 1, 2, 3 |
| B. | 3, 2, 1 |
| C. | 2, 3, 1 |
| D. | 3, 1, 2 |
| Answer» E. | |
| 2528. |
The following parameters determine the model off continuous chip formation: 1. True feed 2. Cutting velocity 3. Chip thickness 4. Rake angle of the cutting tool. The parameters which govern the value of shear angle would include: |
| A. | 1, 2 and 3 |
| B. | 1, 3 and 4 |
| C. | 1, 2 and 4 |
| D. | 2, 3 and 4 |
| Answer» C. 1, 2 and 4 | |
| 2529. |
A ?Dynamometer' is a device used for the measurement of: |
| A. | Chip thickness ratio |
| B. | Forces during metal cutting |
| C. | Wear of the cutting tool |
| D. | Deflection of the cutting tool |
| Answer» C. Wear of the cutting tool | |
| 2530. |
Ease of machining is primarily judged by: |
| A. | Life of cutting tool between sharpening |
| B. | Rigidity of workpiece |
| C. | Microstructure of tool material |
| D. | Shape and dimensions of work |
| Answer» D. Shape and dimensions of work | |
| 2531. |
Tool life is generally better when: |
| A. | Grain size of the metal is large |
| B. | Grain size of the metal is small |
| C. | Hard constituents are present in the microstructure of the tool material |
| D. | None of the above |
| Answer» C. Hard constituents are present in the microstructure of the tool material | |
| 2532. |
Which Machining of titanium is difficult due to: |
| A. | High thermal conductivity of titanium |
| B. | Chemical reaction between tool and work |
| C. | Low tool-chip contact area |
| D. | None of the above |
| Answer» D. None of the above | |
| 2533. |
Which of the machine tools can be used for boring? 1. Lathe 2. Drilling machine 3. Vertical milling machine 4. Horizontal milling machine |
| A. | 1, 2, 3 |
| B. | 1, 3, 4 |
| C. | 2 and 4 |
| D. | 1, 2, 3, 4 |
| Answer» B. 1, 3, 4 | |
| 2534. |
A set of eight form relieved milling cutters for each module is provided to enable eating of gears of different: |
| A. | Materials |
| B. | Types, e.g., spur, helical, etc. |
| C. | Number of teeth" |
| D. | Width of gears |
| Answer» D. Width of gears | |
| 2535. |
Turning operation, the feed could be doubled to increase the metal removal rate. To keep the same level of surface finish, the nose radius of the tool should be: |
| A. | Halved |
| B. | Kept unchanged |
| C. | Doubled |
| D. | made four times |
| Answer» E. | |
| 2536. |
In idealized chip formation, built-up edge will break off and remove some of the cutting tool materials, thereby reducing tool life. Which of the following steps prevent built-up edge? 1. Increasing cutting speed 2. Increasing feed rate 3. Increasing ambient workpiece temperature 4. Decreasing rake angle 5. Reducing friction. Select the correct answer using the code given below: |
| A. | 1, 2 and 3 |
| B. | 2, 3 and 4 |
| C. | 1, 3 and 5 |
| D. | 2, 4 and 5 |
| Answer» D. 2, 4 and 5 | |
| 2537. |
Crater wear occurs mainly due to which one of the following? |
| A. | Adhesion |
| B. | diffusion |
| C. | Oxidation |
| D. | abrasion |
| Answer» C. Oxidation | |
| 2538. |
Which one of the following statements is correct? In the orthogonal cutting system, the cutting edge is: |
| A. | Perpendicular to shear plane |
| B. | Perpendicular to direction of tool travel |
| C. | Perpendicular to direction of depth of cut |
| D. | In line with direction of tool travel |
| Answer» C. Perpendicular to direction of depth of cut | |
| 2539. |
Why does crater wear start at some distance from the tool tip? |
| A. | Tool strength is minimum at that region. |
| B. | Cutting fluid cannot penetrate that region. |
| C. | Tool temperature is maximum in that region |
| D. | Stress on rake face is maximum at that region. |
| Answer» D. Stress on rake face is maximum at that region. | |
| 2540. |
The ratio of time of return stroke to time of forward stroke of a shaping machine is 0.6. The stroke is 250 mm and it makes 30 double strokes per minute. What is the overall average speed of operation? |
| A. | 3.75 m/min |
| B. | 5.0 m/min |
| C. | 7.5 m/min |
| D. | 12 m/min |
| Answer» D. 12 m/min | |
| 2541. |
In a miling machine two side milling cutters are mounted with a desired distance between them so mat both sides of the workpiecc can be milled simultaneously. What is this setup called? |
| A. | Gang milling |
| B. | Straddle milling |
| C. | String milling |
| D. | Side milling |
| Answer» C. String milling | |
| 2542. |
What is the variation of cutting speed with tool life on Log-Log Scale? |
| A. | Parabolic variation |
| B. | Straight line variation |
| C. | Hyperbolic variation |
| D. | Elliptical variation |
| Answer» C. Hyperbolic variation | |
| 2543. |
It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm.If the spindle speed is 60 rpm, then the speed of the lead screw will be: |
| A. | 10 rpm |
| B. | 20 rpm |
| C. | 120 rmp |
| D. | 180 rpm |
| Answer» C. 120 rmp | |
| 2544. |
If the chip-tool contact length is reduced slightly by grinding the tool face, then: |
| A. | Both cutting force and interface temperature would decrease |
| B. | Both cutting force and interface temperature would increase |
| C. | The cutting force would decrease but the interface temperature would increase |
| D. | The cutting force would increase but the interface temperature would decrease |
| Answer» D. The cutting force would increase but the interface temperature would decrease | |
| 2545. |
Which of the following given the correct order of increasing hot hardness of cutting tool materials? |
| A. | Diamond, Carbide, HSS |
| B. | Carbide, Diamond, HSS |
| C. | HSS, Carbide, Diamond |
| D. | HSS, Diamond, Carbide |
| Answer» D. HSS, Diamond, Carbide | |
| 2546. |
The installation cost of a machine is Rs. 2000. The cost of repairs increases Rs. 40 annual). The scrap value of the machine is Rs. 200. The economic repair life of the machine is nearly: |
| A. | \[5\frac{1}{2}\] Years |
| B. | \[7\frac{1}{2}\] years |
| C. | \[9\frac{1}{2}\] Years |
| D. | \[11\frac{1}{2}\] years |
| Answer» D. \[11\frac{1}{2}\] years | |
| 2547. |
Match List-I (ISO classification of carbide tools) with List-II (Applications) and select the correct answer using the codes given below the lists: List-I List-II A. \[P-10\] 1. Non-ferrous, roughing cut B. \[P-50\] 2. Non-ferrous, finishing cut C. \[K-10\] 3. Ferrous material, roughing cut D. \[K-50\] 4. Ferrous material, finishing cut Codes: |
| A. | A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 |
| B. | A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 |
| C. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| D. | A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 |
| Answer» E. | |
| 2548. |
Consider the following approaches normally applied for the economic analysis of machining: 1. Maximum production rate 2. Maximum profit criterion 3. Minimum cost criterion The correct sequence in ascending order of optimum cutting speed obtained by these approaches is: |
| A. | 1, 2, 3 |
| B. | 1, 3, 2 |
| C. | 3, 2, 1 |
| D. | 3, 1, 2 |
| Answer» D. 3, 1, 2 | |
| 2549. |
Which one of the following sets of forces are encountered by a lathe parting/tool while groove cutting? |
| A. | Tangential, radial and axial |
| B. | Tangential and radial |
| C. | Tangential and axial |
| D. | Radial and axial. |
| Answer» B. Tangential and radial | |
| 2550. |
The radical force in single-point tool during turning operation varies between: |
| A. | 0.2 and 0.4 times the main cutting force |
| B. | 0.4 and 0.6 times the main cutting force |
| C. | 0.6 and 0.8 times the main cutting force |
| D. | 0.5 and 0.6 times the main cutting force |
| Answer» B. 0.4 and 0.6 times the main cutting force | |