MCQOPTIONS
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MCQOPTIONS
This section includes 843 Mcqs, each offering curated multiple-choice questions to sharpen your Materials Science and Manufacturing Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
A side and face cutter 125 mm diameter has 10 teeth. If operates at a cutting speed of 14 m/ min with a table traverse 100 mm/min the feed per tooth of the cutter is |
| A. | 10 mm |
| B. | 2.86 mm |
| C. | 0.286 mm |
| D. | 0.8 mm |
| Answer» D. 0.8 mm | |
| 402. |
Under certain cutting conditions, doubling the cutting speed reduces the tool life to (1/16) |
| A. | 0.25 |
| B. | 0.29 |
| C. | 0.27 |
| D. | 0.35 |
| Answer» B. 0.29 | |
| 403. |
To get good surface finish on a turned job, one should use a sharp tool with... feed rate and... speed of rotation of the job. |
| A. | Higher speed for higher heat dissipation |
| B. | Higher speed for Low heat dissipation |
| C. | Low speed for Low heat dissipation |
| D. | Low speed for Higher heat dissipation |
| Answer» B. Higher speed for Low heat dissipation | |
| 404. |
In small lot production for machining T-slots on machine tables, it is expected to use |
| A. | Shaping machine |
| B. | Broaching machine |
| C. | Vertical milling machine |
| D. | Horizontal milling machine |
| Answer» D. Horizontal milling machine | |
| 405. |
A cast iron block of 200 mm length is being shaped in a shaping machine with a depth of cut of 4 mm, feed of 0.25 mm/stroke and the tool principal cutting edge angle of 30 . Number of cutting strokes per minute is 60. Using specific energy for cutting as 1.49 J/mm |
| A. | 290 |
| B. | 198 |
| C. | 298 |
| D. | 398 |
| Answer» D. 398 | |
| 406. |
A shaft of length 90 mm has a tapered portion of length 55 mm. The diameter of the taper is 80 mm at one end and 65 mm at the other. If the taper is made by tail stock set over method, the taper angle and the set over respectively are |
| A. | 15 32' and 12.16 mm |
| B. | 15 32' and 15.66 mm |
| C. | 11 22' and 10.26 mm |
| D. | 10 32' and 14.46 mm |
| Answer» B. 15 32' and 15.66 mm | |
| 407. |
Orthogonal turning of a mild steel tube with a tool of rake angle 10 carried out at a feed of 0.14 mm/rev. If the thickness of the chip produced is 0.28 mm, the values of shear angle and shear strain will be respectively |
| A. | 28 20'and 2.19 |
| B. | 22 20' and 3.53 |
| C. | 24 30' and 3.53 |
| D. | 37 20' and 5.19 |
| Answer» B. 22 20' and 3.53 | |
| 408. |
Two cutting tools with tool life equations given below are being compared: |
| A. | 106.66 |
| B. | 106.99 |
| C. | 106.88 |
| D. | 106.77 |
| Answer» B. 106.99 | |
| 409. |
In a machining operation, if the generatrix and directrix both are straight lines, the surface obtained is |
| A. | cylindrical |
| B. | helical |
| C. | plane |
| D. | surface of revolution |
| Answer» D. surface of revolution | |
| 410. |
A single point cutting tool with 0 rake angle is used in an orthogonal machining process. At a cutting speed of 180 m/min, the thrust force is 490 N. If the coefficient of friction between the tool and the chip is 0.7, then the power consumption (in kW) for the machining operation is_____. |
| A. | 2.1 |
| B. | 3.1 |
| C. | 2.2 |
| D. | 2.11 |
| Answer» B. 3.1 | |
| 411. |
An orthogonal turning operation is carried out under the following conditions; rake angle = 5 , spindle rotational speed = 400 rpm; axial feed = 0.4 m/min and radial depth of cut = 5 mm. The chip thickness t |
| A. | 19.88 |
| B. | 18.80 |
| C. | 18.88 |
| D. | 18.99 |
| Answer» D. 18.99 | |
| 412. |
For an orthogonal cutting operation, tool material is HSS, rake angle is 22 , chip thickness is 0.8 mm, speed is 48 m/min and feed is 0.4 mm/rev. The shear plane angle (in degrees) is |
| A. | 19.24 |
| B. | 29.70 |
| C. | 56.00 |
| D. | 68.75 |
| Answer» C. 56.00 | |
| 413. |
For a certain job, the cost of metal cutting is Rs. 180 C/V and the cost of tooling is Rs. 270 C/ (TV), where C is a constant, V is the cutting speed in m/min and T is the tool life in minutes. The Taylor's tool life equation is VT |
| A. | 93.2 |
| B. | 93.9 |
| C. | 93.5 |
| D. | 93.3 |
| Answer» B. 93.9 | |
| 414. |
The following data is applicable for a turning operation. The length of job is 900 mm, diameter of job is 200 mm, feed rate is 0.25 mm/rev and optimum cutting speed is 300 m/min. The machining time (in min) is_______. |
| A. | 7.539 |
| B. | 9.539 |
| C. | 6.539 |
| D. | 8.539 |
| Answer» B. 9.539 | |
| 415. |
The tool life equation for HSS tool is VT |
| A. | 0.15 |
| B. | 1.06 |
| C. | 22.50 |
| D. | 30.0 |
| Answer» C. 22.50 | |
| 416. |
In an orthogonal cutting process the tool used has rake angle of zero degree. The measured cutting force and thrust force are 500 N and 250 N, respectively. The coefficient of friction between the tool and the chip is |
| A. | 0.7 |
| B. | 0.6 |
| C. | 0.5 |
| D. | 0.9 |
| Answer» D. 0.9 | |
| 417. |
Strong screw threads are produced by |
| A. | thread milling |
| B. | thread chasing |
| C. | thread cutting with single point tool |
| D. | thread rolling |
| Answer» E. | |
| 418. |
Which pair of following statements is correct for orthogonal cutting using a single-point cutting tool? |
| A. | P and R |
| B. | P and S |
| C. | Q and R |
| D. | Q and S |
| Answer» E. | |
| 419. |
Cutting tool is much harder than the work piece. Yet the tool wears out during the tool-work interaction, because |
| A. | extra hardness is imparted to the work piece due to coolant used |
| B. | oxide layers on the work piece surface impart extra hardness to it |
| C. | extra hardness is imparted to the work piece due to severe rate of strain |
| D. | vibration of induced in the machine tool |
| Answer» D. vibration of induced in the machine tool | |
| 420. |
A straight turning operation is carried out using a single point cutting tool on an AIS 1020 steel rod. The feed is 0.2 mm/rev and the depth of cut is 0.5 mm. The tool has a side cutting edge angle of 60 . The uncut chip thickness (in mm) is _____. |
| A. | 0.1 mm |
| B. | 0.3 mm |
| C. | 0.4 mm |
| D. | 0.2 mm |
| Answer» B. 0.3 mm | |
| 421. |
Which two of the following joining processes are autogenous? |
| A. | i and iv |
| B. | ii and iii |
| C. | ii and iv |
| D. | i and iii |
| Answer» B. ii and iii | |
| 422. |
Determine the transformation ratio (TR) of the gear train connecting the spindle and the lead screw of 4TPI required to cut 1.0 mm pitch screw threads in a centre lathe. |
| A. | 20/127 |
| B. | 20/126 |
| C. | 20/125 |
| D. | 20/120 |
| Answer» B. 20/126 | |
| 423. |
In an explosive welding process, the (maximum/ minimum) velocity of impact is fixed by the velocity of sound in the (flyer/ target) plate material. |
| A. | minimum & Flyer |
| B. | minimum & target |
| C. | Maximum & Flyer |
| D. | Maximum & target |
| Answer» D. Maximum & target | |
| 424. |
Welding process |
| A. | A-2, B-4, C-6, D-5 |
| B. | A-2, B-4, C-1, D-5 |
| C. | A-2, B-4, C-6, D-3 |
| D. | A-2, B-4, C-6, D-1 |
| Answer» B. A-2, B-4, C-1, D-5 | |
| 425. |
In resistance seam welding, the electrode is in the form of a |
| A. | cylinder |
| B. | flat plate |
| C. | coil of wire |
| D. | circular disc |
| Answer» E. | |
| 426. |
For casting of turbine blades made of high temperature and high strength alloys, the most suitable process is |
| A. | Die casting |
| B. | Investment casting |
| C. | Centrifugal casting |
| D. | Slush casting |
| Answer» D. Slush casting | |
| 427. |
Green strength in powder metallurgy refers to the strength of |
| A. | original material in the bulk form |
| B. | the powder before compaction |
| C. | the powder after compaction |
| D. | the powder after sintering and cooling |
| Answer» C. the powder after compaction | |
| 428. |
Flash and gutter are provided in drop forging dies at the following stage: |
| A. | Blocking |
| B. | Preforming (Edging) |
| C. | Finishing |
| D. | Fullering |
| Answer» D. Fullering | |
| 429. |
Cold shut (lap) may occur in products obtained by |
| A. | Casting |
| B. | Forging |
| C. | Machining |
| D. | Welding |
| E. | A and B |
| Answer» F. | |
| 430. |
Consider the following steps in forging a connecting rod from the bar stock |
| A. | 1-2-3-4 |
| B. | 2-3-4-1 |
| C. | 3-4-1-2 |
| D. | 4-1-3-2 |
| Answer» E. | |
| 431. |
Cold working produces the following effects |
| A. | 1 and 2 |
| B. | 1, 2 and 3 |
| C. | 3 and 4 |
| D. | 1 and 4 |
| Answer» B. 1, 2 and 3 | |
| 432. |
A solid cylindrical stainless steel work piece of 200 mm diameter and 150 mm height. This component is reduced by 50% in height with flat die in open die forging. Assuming the flow stress of the material as 1000 MPa and the coefficient of friction to be 0.2, the estimated forging force at the end of the stroke is |
| A. | 20.8 kN |
| B. | 31 kN |
| C. | 78.6 kN |
| D. | 78.6 MN |
| Answer» E. | |
| 433. |
An annealed copper wire of 25 mm diameter is drawn into a wire of 5 mm diameter. The average yield stress in this operation if the curve of the material is given, = 315 |
| A. | 592 MPa |
| B. | 458 MPa |
| C. | 342 MPa |
| D. | None of these |
| Answer» B. 458 MPa | |
| 434. |
Production process application |
| A. | A 2 B 3 C 5 D 1 |
| B. | A 2 B 3 C 5 D 4 |
| C. | A 2 B 3 C 4 D 5 |
| D. | A 2 B 4 C 5 D 1 |
| Answer» D. A 2 B 4 C 5 D 1 | |
| 435. |
Which one of the following manufacturing processes requires the provision of 'gutters'? |
| A. | closed die forging |
| B. | centrifugal casting |
| C. | investment casting |
| D. | impact extrusion |
| Answer» B. centrifugal casting | |
| 436. |
Heat (Joules) dissipated to the base metal will be (neglecting all other heat losses) |
| A. | 10 |
| B. | 16 |
| C. | 22 |
| D. | 32 |
| Answer» C. 22 | |
| 437. |
Identify the stress strain in flange portion of a partially drawn cylindrical cup when deep drawing without a blank holder |
| A. | tensile in all three directions |
| B. | no stress in the flange at all, because there is no blank holder |
| C. | tensile stress in one direction and compressive stress in other direction |
| D. | tensile in two directions and compressive in third direction |
| Answer» D. tensile in two directions and compressive in third direction | |
| 438. |
In deep drawing of sheets, the values of limiting drawing ratio depends on |
| A. | percentage elongation of the sheet |
| B. | yield strength of the sheet |
| C. | type of press used |
| D. | thickness of sheet |
| Answer» E. | |
| 439. |
In a rolling process, the maximum possible draft, defined as the difference between the initial and the final thickness of the metal sheet, mainly depends on which pair of the following parameters? |
| A. | Q, S |
| B. | R, T |
| C. | S, T |
| D. | P, R |
| Answer» C. S, T | |
| 440. |
A 300 mm thick slab is being cold rolled using roll of 600 mm diameter. If the coefficient of friction is 0.08, the maximum possible reduction (in mm) is_______. |
| A. | 1.92 |
| B. | 1.95 |
| C. | 1.94 |
| D. | 1.99 |
| Answer» B. 1.95 | |
| 441. |
A mild steel plate has to be rolled in one pass such that the final plate thickness is 2/3rd of the initial thickness, with the entrance speed of 10 m/min and roll diameter of 500 mm. If the plate widens by 2% during rolling, the exit velocity (in m/min) is______. |
| A. | 14.6 |
| B. | 14.8 |
| C. | 14.7 |
| D. | 14.9 |
| Answer» D. 14.9 | |
| 442. |
In progressive die (for sheet metal), spring loaded stripper plate is used to clamp the stock until |
| A. | The punch penetrates twice the stock thickness |
| B. | It removes wrinkles on the product edges |
| C. | Automatic feeder plate releases it |
| D. | Punch is completely withdrawn from the stock |
| Answer» E. | |
| 443. |
In the deep drawing of cups, blanks show a tendency to wrinkle up around the periphery (flange). The most likely cause and remedy of the phenomenon are, respectively. |
| A. | Buckling due to circumferential compression; Increase blank holder pressure. |
| B. | High blank holder pressure and high friction; Reduce blank holder pressure and apply lubricant. |
| C. | High temperature causing increase in circumferential length; Apply coolant to blank. |
| D. | Buckling due to circumferential compression; decrease blank holder pressure. |
| Answer» B. High blank holder pressure and high friction; Reduce blank holder pressure and apply lubricant. | |
| 444. |
During open die forging process using two flat and parallel dies, a solid steel disc of initial radius (R |
| A. | 241.76 |
| B. | 254.55 |
| C. | 265.45 |
| D. | 278.20 |
| Answer» C. 265.45 | |
| 445. |
Consider the following statements: In comparison to hot working, in cold working, |
| A. | 1,2 and 3 |
| B. | 1, 2 and 4 |
| C. | 1 and 3 |
| D. | 2, 3 and 4 |
| Answer» C. 1 and 3 | |
| 446. |
The true stress true curve is given by = 1400 |
| A. | 971 |
| B. | 750 |
| C. | 698 |
| D. | 350 |
| Answer» B. 750 | |
| 447. |
The metal powder used in Thermit welding of steel is |
| A. | AI |
| B. | Cu |
| C. | Pb |
| D. | W |
| Answer» B. Cu | |
| 448. |
A brass billet is to be extruded from its initial diameter of 100 mm to a final diameter of 50 mm. The working temperature of 700 C and the extrusion constant is 250 MPa. The force required for extrusion is |
| A. | 5.44 MN |
| B. | 2.72 MN |
| C. | 1.36 MN |
| D. | 0.36 MN |
| Answer» C. 1.36 MN | |
| 449. |
A lever having 90 bend is to be produced by drop forging using mild steel bar as raw material. |
| A. | PQRS |
| B. | RTQSP |
| C. | TRSQP |
| D. | RQTSP |
| Answer» C. TRSQP | |
| 450. |
By application of tensile force, the cross sectional area of bar P is first reduced by 30% and then by an additional 20%. Another bar Q of the same material is reduced in cross sectional area by 50% in a single step by applying tensile force. After deformation, the true strain in bar P and bar Q will, respectively be |
| A. | 0.5 and 0.5 |
| B. | 0.58 and 0.69 |
| C. | 0.69 and 0.69 |
| D. | 0.78 and 1.00 |
| Answer» C. 0.69 and 0.69 | |