MCQOPTIONS
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MCQOPTIONS
This section includes 493 Mcqs, each offering curated multiple-choice questions to sharpen your Mongodb knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
As the cutting speed increases, tool life decreases. |
| A. | Yes |
| B. | No |
| C. | Can't say |
| D. | None of these |
| Answer» B. No | |
| 452. |
A fixture is defined as a device which |
| A. | holds and locates a workpiece and guides and controls one or more cutting tools |
| B. | holds and locates a workpiece during an inspection or for a manufacturing operation |
| C. | is used to check the accuracy of workpiece |
| D. | all of the above |
| Answer» C. is used to check the accuracy of workpiece | |
| 453. |
The cutting force in down milling is maximum when the tooth begins its cut and reduces to minimum when the tooth leaves the work. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» B. Incorrect | |
| 454. |
An open structure of a grinding wheel is used for |
| A. | soft materials |
| B. | tough materials |
| C. | ductile materials |
| D. | all of these |
| Answer» E. | |
| 455. |
In oblique cutting system, the maximum chip thickness occurs at the middle. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 456. |
Chip breakers are used to |
| A. | increase tool life |
| B. | remove chips from bed |
| C. | break the chips into short segments |
| D. | to minimise heat generation |
| Answer» D. to minimise heat generation | |
| 457. |
Larger end cutting edge angle __________ tool life. |
| A. | increases |
| B. | decreases |
| C. | does not effect |
| D. | None of these |
| Answer» C. does not effect | |
| 458. |
The lead screw of a lathe has __________ threads. |
| A. | single start |
| B. | double start |
| C. | multi-start |
| D. | any one of these |
| Answer» B. double start | |
| 459. |
A drill considered as a cutting tool having zero rake, is known as a |
| A. | flat drill |
| B. | straight fluted drill |
| C. | parallel shank twist drill |
| D. | tapered shank twist drill |
| Answer» C. parallel shank twist drill | |
| 460. |
Which of the following statement is wrong about ultra-sonic machining? |
| A. | It is best suited for machining hard and brittle materials. |
| B. | It cuts materials at very slow speeds. |
| C. | It removes large amount of material. |
| D. | It produces good surface finish. |
| Answer» D. It produces good surface finish. | |
| 461. |
In orthogonal cutting system, the maximum chip thickness occurs at the middle. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» B. Incorrect | |
| 462. |
Lapping is an operation of |
| A. | making a cone-shaped enlargement of the end of a hole |
| B. | smoothing and squaring the surface around a hole |
| C. | sizing and finishing a small diameter hole |
| D. | producing a hole by removing metal along the circumference of a hollow cutting tool |
| Answer» D. producing a hole by removing metal along the circumference of a hollow cutting tool | |
| 463. |
If the helix angle of the drill is made __________ 30°, then the torque required to drive the drill at a given feed will be more. |
| A. | equal to |
| B. | less than |
| C. | more than |
| D. | None of these |
| Answer» C. more than | |
| 464. |
The tailstock set over required to turn a taper on the entire length of a workpiece having diameters D and d is |
| A. | (D - d)/2L |
| B. | (D - d)/L |
| C. | (D - d)/2 |
| D. | D - d |
| Answer» D. D - d | |
| 465. |
The different spindle speeds on a lathe form |
| A. | arithmetical progression |
| B. | geometrical progression |
| C. | harmonical progression |
| D. | any one of these |
| Answer» C. harmonical progression | |
| 466. |
The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called |
| A. | helix or rake angle |
| B. | point angle |
| C. | chisel edge angle |
| D. | lip clearance angle |
| Answer» D. lip clearance angle | |
| 467. |
The operation of machining several surfaces of a workpiece simultaneously is called |
| A. | profile milling |
| B. | gang milling |
| C. | saw milling |
| D. | helical milling |
| Answer» C. saw milling | |
| 468. |
A mandrel is used to hold |
| A. | an eccentric work |
| B. | a heavy work |
| C. | a thin work |
| D. | none of these |
| Answer» E. | |
| 469. |
The hard grade grinding wheels are denoted by the letters |
| A. | A to H |
| B. | I to P |
| C. | Q to Z |
| D. | A to P |
| Answer» D. A to P | |
| 470. |
The part of the tool on which cutting edge is formed is called nose. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 471. |
Small nose radius |
| A. | increases tool life |
| B. | decreases tool life |
| C. | produces chipping and decreases tool life |
| D. | results in excessive stress concentration and greater heat generation |
| Answer» E. | |
| 472. |
A grinding wheel is said to be of __________ if the abrasive grains can be easily dislodged. |
| A. | soft grade |
| B. | medium grade |
| C. | hard grade |
| D. | None of these |
| Answer» B. medium grade | |
| 473. |
Ceramic tools has greater tool life than carbide tools. |
| A. | True |
| B. | False |
| C. | Can't say |
| D. | None of these |
| Answer» B. False | |
| 474. |
The chuck preferred for quick setting and accurate centering of a job is |
| A. | four jaw independent chuck |
| B. | collect chuck |
| C. | three jaw universal chuck |
| D. | magnetic chuck |
| Answer» C. three jaw universal chuck | |
| 475. |
The hole drilled for tapping should be smaller than the tap size by twice the depth of thread. |
| A. | Agree |
| B. | Disagree |
| C. | Can't say |
| D. | None of these |
| Answer» B. Disagree | |
| 476. |
The guideways are of |
| A. | flat type |
| B. | V-type |
| C. | dovetail type |
| D. | any one of these |
| Answer» E. | |
| 477. |
A feed gear box for a screw cutting lathe is designed on the basis of |
| A. | geometric progression |
| B. | arithmetic progression |
| C. | harmonic progression |
| D. | none of these |
| Answer» B. arithmetic progression | |
| 478. |
Side rake angle of a single point cutting tool is the angle |
| A. | by which the face of the tool is inclined towards back |
| B. | by which the face of the tool is inclined sideways |
| C. | between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool |
| D. | between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base |
| Answer» C. between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool | |
| 479. |
Segmental chips are formed during machining |
| A. | mild steel |
| B. | cast iron |
| C. | high speed steel |
| D. | high carbon steel |
| Answer» C. high speed steel | |
| 480. |
Cemented carbide tool tips are produced by powder metallurgy. |
| A. | True |
| B. | False |
| C. | Can't say |
| D. | None of these |
| Answer» B. False | |
| 481. |
The angle included between the two lips projected upon a plane parallel to the drill axis and paralled to the two cutting lips, is called helix angle. |
| A. | Correct |
| B. | Incorrect |
| C. | Can't say |
| D. | None of these |
| Answer» C. Can't say | |
| 482. |
In hot machining, tool is made of |
| A. | tungsten carbide |
| B. | brass or copper |
| C. | diamond |
| D. | stainless steel |
| Answer» B. brass or copper | |
| 483. |
The velocity of tool relative to the workpiece is known as cutting velocity. |
| A. | True |
| B. | False |
| C. | Can't say |
| D. | None of these |
| Answer» B. False | |
| 484. |
Grinding wheels should be tested for balance |
| A. | only at the time of manufacture |
| B. | before starting the grinding operation |
| C. | at the end of grinding operation |
| D. | occasionally |
| Answer» E. | |
| 485. |
In ultra-sonic machining, the metal is removed by |
| A. | using abrasive slurry between the tool and work |
| B. | direct contact of tool with the work |
| C. | maintaining an electrolyte between the work and tool in a very small gap between the two |
| D. | erosion caused by rapidly recurring spark discharges between the tool and work |
| Answer» B. direct contact of tool with the work | |
| 486. |
_________DO_NOT_TYPICALLY_PROVIDE_SUFFICIENT_PERFORMANCE_TO_SUPPORT_A_MONGODB_DEPLOYMENT?$ |
| A. | RAID-5 |
| B. | RAID-10 |
| C. | RAID-7 |
| D. | None of the mentioned |
| Answer» B. RAID-10 | |
| 487. |
Which of the following should be avoided with MongoDB Deployments ?$ |
| A. | RAID-5 |
| B. | RAID-10 |
| C. | RAID-7 |
| D. | RAID-0 |
| Answer» E. | |
| 488. |
The ________ command returns information regarding the number of open connection? |
| A. | connPoolStats |
| B. | connStats |
| C. | serverstats |
| D. | none of the mentioned |
| Answer» B. connStats | |
| 489. |
_______ concern describes the guarantee that MongoDB provides when reporting on the success of a write operation. |
| A. | Write |
| B. | Read |
| C. | Read only |
| D. | SSD |
| Answer» B. Read | |
| 490. |
MongoDB uses ________ logging to an on-disk journal. |
| A. | write ahead |
| B. | read ahead |
| C. | write once |
| D. | read only |
| Answer» B. read ahead | |
| 491. |
_________ supports concurrent access by readers and writers to the documents in a collection. |
| A. | MMAPv1 |
| B. | WiredTiger |
| C. | WirelessTiger |
| D. | All of the mentioned |
| Answer» C. WirelessTiger | |
| 492. |
All collections have a unique ________ lock that allows multiple clients to modify documents in different collections at the same time. |
| A. | writer |
| B. | readers-writer |
| C. | readers |
| D. | all of the mentioned |
| Answer» C. readers | |
| 493. |
Which of the following storage engine is supported by default ? |
| A. | MMAPv1 |
| B. | WiredTiger |
| C. | WirelessTiger |
| D. | All of the mentioned |
| Answer» B. WiredTiger | |