McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 51. |
Approximate cost of a hostel building for 100 students @Rs.10000/- per student works out as Rs. 10 lakhs. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: approx. cost of a bed hospital | |
| 52. |
Approximate cost of sewerage project for a population of one [email protected] Rs. 10/- head works out as Rs. 10 lakh. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: approximate cost of sewerage project for a population of one | |
| 53. |
Cube rate estimate is less accurate as compared to the plinth area estimate as the height of the building is also compared. |
| A. | false |
| B. | true |
| Answer» B. true | |
| Explanation: cube rate estimate is most accurate as compared to the plinth area estimate as the height of the building is also compared. | |
| 54. |
For storeyed building plinth area estimate is not prepared for each storey separately. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: for storeyed building plinth area estimate is prepared for each storey separately. | |
| 55. |
is prepared on the basis of plinth area of building, the rate being deducted from the cost of similar building having similar specification, heights and construction, in the locality. |
| A. | cube rate estimate |
| B. | supplementary estimate |
| C. | maintenance estimate |
| D. | plinth area estimate |
| Answer» D. plinth area estimate | |
| Explanation: plinth area estimate is calculated by finding the plinth area of the building and multiplying by the plinth area rate. the plinth area should be calculated for the covered area by taking external dimension of the building at the floor level. | |
| 56. |
In this method approx. total length of walls is found in running metre and this total length multiplied by the rate per running metre of wall gives a fairly accurate cost. |
| A. | annual repair |
| B. | item rate estimate |
| C. | approximate quantity method estimate |
| D. | cubical content estimate |
| Answer» C. approximate quantity method estimate | |
| Explanation: for this method the structure may be divided into two parts viz. foundation including plinth and superstructure. | |
| 57. |
estimate is a detailed estimate and is prepared to maintain the structure or work in proper order and safe condition. |
| A. | supplementary and revised estimate |
| B. | maintenance estimate |
| C. | item rate estimate |
| D. | revised estimate |
| Answer» B. maintenance estimate | |
| Explanation: for building; this includes white washing, colour washing, painting, minor repairs etc. for road works the a.r. estimate provides for patch repairing, renewals, repair of culverts, etc. | |
| 58. |
The term is used to denote a procedure of costing or valuing an item of work on the basis of actual labourers and materials required. |
| A. | prime cost |
| B. | hour-work |
| C. | day-work |
| D. | sub-work |
| Answer» C. day-work | |
| Explanation: certain items of work which cannot be measured as- a design in the plaster work, front architectural finish of a building, work under water, etc. are valued and paid by ‘day work’. in such cases the schedule of rates of materials and different classes of labourers likely to be engaged in th work should be included in the tender and in contract agreement. | |
| 59. |
Which of the following is a type of forging? |
| A. | open die |
| B. | closed die |
| C. | impression dies |
| D. | hold dies |
| Answer» D. hold dies | |
| Explanation: there are basically three methods (or processes) to make a forged part, | |
| 60. |
In which of the following forging metal is kept in the lower die? |
| A. | open die |
| B. | closed die |
| C. | impression dies |
| D. | hold dies |
| Answer» A. open die | |
| Explanation: when shaping a solid piece of metal by closed die forging, the die is initially open. the work piece is placed in the lower die half, and the top die is then brought down to engage with the work piece the | |
| 61. |
In which of the forging process metal is kept in between a pair of dies and a gutter is provided in the lower die? |
| A. | open die |
| B. | closed die |
| C. | impression dies |
| D. | hold dies |
| Answer» B. closed die | |
| Explanation: in closed die forging process metal is kept in between a pair of dies and a gutter is provided in the lower die. in impression die forging process metal is kept in between a pair of dies and no gutter is provided in the lower die. | |
| 62. |
The extra metal which settles down in the gutter is known as? |
| A. | flash |
| B. | slag |
| C. | flux |
| D. | barrelling |
| Answer» A. flash | |
| Explanation: in impression die forging, the die surfaces contain a shape that is given to the work piece during compression, thus restricting the metal flow significantly. there is some extra deformed material outside the die impression which is called as flash. this will be trimmed off later. | |
| 63. |
In which of the following forging process no flash is formed? |
| A. | open die |
| B. | closed die |
| C. | impression dies |
| D. | hold dies |
| Answer» B. closed die | |
| Explanation: in flashless forging, the work piece is fully restricted within the die and no flash is produced. the amount of initial work piece used must be controlled accurately so that it matches the volume of the die cavity. | |
| 64. |
Cogging, which is also called as drawing out, is basically? |
| A. | open die forging operation |
| B. | closed die forging operation |
| C. | impression dies forging operation |
| D. | hold die forging operation |
| Answer» A. open die forging operation | |
| Explanation: cogging is an open die forging process in which flat or slightly contoured die are employed to compress a work piece, reducing its thickness and increasing its length. | |
| 65. |
In rolling operation, the roll rotates with surface velocity? |
| A. | exceeding the speed of incoming metal |
| B. | lower than the speed of incoming metal |
| C. | equal to speed of the incoming metal |
| D. | very higher than the speed of incoming metal |
| Answer» C. equal to speed of the incoming metal | |
| Explanation: the rolls rotate with a surface velocity exceeding the speed of the incoming metal, friction along the contact interface acts to propel the metal forward. the metal is squeezed and elongated and usually changed in cross section. | |
| 66. |
A round billet made of 70-30 brass is extruded at a temperature of 675°C. The billet diameter is 125 mm, and the diameter of the extrusion is 50 mm. Calculate the extrusion force required. |
| A. | 4 mn |
| B. | 5 mn |
| C. | 5.6 mn |
| D. | none of the mentioned |
| Answer» C. 5.6 mn | |
| Explanation: the extrusion force is calculated using | |
| 67. |
In which type of extrusion, a billet is placed in a chamber? |
| A. | forward |
| B. | indirect |
| C. | hydrostatic |
| D. | impact |
| Answer» A. forward | |
| Explanation: in forward extrusion, a billet is placed in a chamber and forced through a die opening by a hydraulically driven ram. the die opening may be round, or it may have various shapes, depending on the desired profile. | |
| 68. |
In which type of extrusion, the die moves toward the unextruded billet? |
| A. | forward |
| B. | indirect |
| C. | hydrostatic |
| D. | impact |
| Answer» B. indirect | |
| Explanation: in indirect extrusion, (also called reverse, inverted, or backward extrusion), the die moves toward the unextruded billet. indirect extrusion has the advantage of having no billet-container friction, since there is no relative motion. | |
| 69. |
In which type of extrusion, the billet is smaller in diameter than the chamber? |
| A. | forward |
| B. | indirect |
| C. | hydrostatic |
| D. | impact |
| Answer» C. hydrostatic | |
| Explanation: in hydrostatic extrusion, the billet is smaller in diameter than the chamber | |
| 70. |
Scope of automation in foundry process is |
| A. | low |
| B. | high |
| C. | minimum |
| D. | maximum |
| Answer» A. low | |
| Explanation: the foundry processes are extensively laborious while compared to other manufacturing processes. the productivity when compared to efforts is low. the processes can be mechanized but not automated. | |
| 71. |
Which of the following is an advantage of the Green sand molding process used in a foundry? |
| A. | appropriate for long production run |
| B. | very low cost process |
| C. | sand is reusable |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: the green sand has an adequate amount of water which is lost during the process but it can be restored by adding the same and it is fit for reusing. this enables it | |
| 72. |
The energy consumption is a drawback of the foundry. |
| A. | high |
| B. | optimum |
| C. | intensive |
| D. | low |
| Answer» A. high | |
| Explanation: in a foundry, the sources of energy used are large in number. the major drawback of the foundry is that the energy consumption in terms of material, refractories and metal is very high. | |
| 73. |
Majority parts in transportation vehicles are made by the foundry processes. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: cast metal parts account for more than 90% of an automobile engine and for more than 50% of the total weight of the tractor. thus, most of the parts are made of cast iron are manufactured in foundries. | |
| 74. |
defects in castings cannot be identified easily. |
| A. | internal |
| B. | external |
| C. | chemical |
| D. | metallic |
| Answer» A. internal | |
| Explanation: the casting is usually made in bulk in foundries and it is not visible to the naked eyes. the castings have to be sent for x-ray testing and such kind of test to find out the internal defects. identifying internal defects is a tough task in foundries. | |
| 75. |
The directional properties are imparted to the castings made in foundries. |
| A. | single |
| B. | double |
| C. | spherical |
| D. | multiple |
| Answer» A. single | |
| Explanation: when the pouring takes place in the foundry, the uniform melting of the metal is ensured so that the casting prepared has adequate strength. this imparts a uniform and a single directionality to the castings that are produced and provides better vibration damping capacity to the cast parts. | |
| 76. |
In the foundry, the metal joining process is employed. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: the foundry produces the castings that are in a single piece. even if the pattern of the first and second half is different, it produces the casting in a single piece. hence, the metal joining process is eliminated in the foundry. | |
| 77. |
Foundry process is used to make intricate parts. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: the foundry process is suitable for both small and large components. it gives a high rate of production, small dimensional | |
| 78. |
is the speed at which the metal is removed by the tool from the work piece. |
| A. | feed |
| B. | cutting speed |
| C. | depth of cut |
| D. | none of the mentioned |
| Answer» B. cutting speed | |
| Explanation: it can be easily understood by looking at the definition of the cutting speed. cutting speed is a peripheral speed of the work. | |
| 79. |
Which of the following represents the formula for cutting speed? cs =cutting speed, D= diameter of work, N= rpm. |
| A. | cs = (3.14*d*n) |
| B. | cs = (d*n) |
| C. | cs = (3.14*d)/n |
| D. | none of the mentioned |
| Answer» A. cs = (3.14*d*n) | |
| Explanation: cs = (3.14*d*n) – this is the formula for finding the cutting speed. | |
| 80. |
is the distance the tool advances for each revolution of the work. |
| A. | feed |
| B. | depth of cut |
| C. | metal removal rate |
| D. | none of the mentioned |
| Answer» A. feed | |
| Explanation: the feed of a cutting tool in a lathe work is the distance the tool advances for each revolution of the work. increased feed reduces the cutting time. | |
| 81. |
Which of the following is the unit of the feed? |
| A. | mm / minute |
| B. | mm / revolution |
| C. | mm * minute |
| D. | none of the mentioned |
| Answer» B. mm / revolution | |
| Explanation: mm / revolution is the right unit for feed. in british system it is expressed in inches per revolution. | |
| 82. |
The depth of cut is the distance measured from the machined surface to the surface of the work piece, which is uncut. |
| A. | parallel |
| B. | perpendicular |
| C. | at 45 degree |
| D. | none of the mentioned |
| Answer» B. perpendicular | |
| Explanation: it is the perpendicular distance measured from the machined surface to the surface of the work piece, which is uncut. | |
| 83. |
Which of the following represents the unit of metal removal rate? |
| A. | mm/revolution |
| B. | mm*mm/revolution |
| C. | mm*mm*mm/revolution |
| D. | none of the mentioned |
| Answer» C. mm*mm*mm/revolution | |
| Explanation: mm*mm*mm / revolution is the right unit for the metal removal rate. if we put the units of cutting speed, depth of cut | |
| 84. |
Which of the following represents the unit for machining time? |
| A. | mm / minute |
| B. | minute / revolution |
| C. | minute |
| D. | none of the mentioned |
| Answer» C. minute | |
| Explanation: machining time is simply a time so its unit must be matched with time’s unit. minute is the right unit for machining time. | |
| 85. |
For general purposes, ratio of the depth of cut to the feed varies from |
| A. | 10:1 |
| B. | 1:10 |
| C. | 100:1 |
| D. | 1:100 |
| Answer» A. 10:1 | |
| Explanation: the ratio varies from 10:1. the depth of cut varies inversely as the cutting speed. | |
| 86. |
Which of the following is used to drive the work piece? |
| A. | carriers |
| B. | catch plates |
| C. | both carriers and catch plates |
| D. | none of the mentioned |
| Answer» C. both carriers and catch plates | |
| Explanation: work piece can be driven by using both of these. catch plates are either screwed or bolted to the nose of the tailstock spindle while the carriers consists of a cast iron or forged steel body. | |
| 87. |
Drilling is performed by holding the work by a chuck. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: it can be seen from the working of lathe operations. several types of chucks are there like 4 jaw chuck, 3 jaw chuck and so on. | |
| 88. |
Knurling can be performed by special attachments. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: this is false. knurling can be done by a chuck on holding work piece between centres. | |
| 89. |
Grinding can be performed by |
| A. | using faceplates or angle plates |
| B. | using chucks |
| C. | special attachments |
| D. | none of the mentioned |
| Answer» C. special attachments | |
| Explanation: grinding can be done by special attachments. grinding is a type of machining using an abrasive type of wheel as the cutting tool. | |
| 90. |
Taper boring and the under boring can be performed by |
| A. | centers |
| B. | face plates or angle plates |
| C. | special attachments |
| D. | none of the mentioned |
| Answer» B. face plates or angle plates | |
| Explanation: both types of plates can be used for this purpose. a face plate consists of a circular disk bored out and threaded to sit the nose of the lathe spindle while angel plate | |
| 91. |
Milling can be performed by |
| A. | centres |
| B. | face plates or angel plates |
| C. | chucks |
| D. | special attachments |
| Answer» D. special attachments | |
| Explanation: milling can be performed by special attachments. milling machine is a machine tool that removes metal as the work is fed against a rotating multipoint cutter. | |
| 92. |
Spinning can be done by |
| A. | centres |
| B. | face plates or angle plates |
| C. | special attachments |
| D. | none of the mentioned |
| Answer» A. centres | |
| Explanation: this operation can be done by using centres. spining winding is also done by this method. | |
| 93. |
Eccentric turning can be performed by using special attachments. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: this is false. eccentric type of turning can be performed by using centres or chucks. | |
| 94. |
Shaping can be performed more effectively by milling machine. |
| A. | horizontal |
| B. | vertical |
| C. | can’t say anything |
| D. | none of the mentioned |
| Answer» B. vertical | |
| Explanation: vertical milling machines are | |
| 95. |
Form cutting can be performed more effectively by milling machine. |
| A. | horizontal |
| B. | vertical |
| C. | can’t say anything |
| D. | none of the mentioned |
| Answer» A. horizontal | |
| Explanation: form cutting can be performed more effectively by horizontal milling machine. the spindle in the horizontal milling machine is mounted on the horizontal arbor above table. | |
| 96. |
Slab milling can be performed more effectively by milling machine. |
| A. | horizontal |
| B. | vertical |
| C. | can’t say anything |
| D. | none of the mentioned |
| Answer» A. horizontal | |
| Explanation: slab milling can be performed more effectively by horizontal milling machine. this slab mill is also used in gang milling. | |
| 97. |
Drilling can be performed more effectively by milling machine. |
| A. | horizontal |
| B. | vertical |
| C. | can’t say anything |
| D. | none of the mentioned |
| Answer» B. vertical | |
| Explanation: in vertical milling, the workpiece is held by a horizontal table and this horizontal table rotates about a vertical axis. there are none-rotating tools which can | |
| 98. |
Boring can be performed more effectively by milling machine. |
| A. | horizontal |
| B. | vertical |
| C. | can’t say anything |
| D. | none of the mentioned |
| Answer» B. vertical | |
| Explanation: vertical boring milling is more effectively as it has wide application in ring gear blanks, turbine casting and locomotive tires and so on. | |
| 99. |
Dovetailing can be performed more effectively by milling machine. |
| A. | horizontal |
| B. | vertical |
| C. | can’t say anything |
| D. | none of the mentioned |
| Answer» B. vertical | |
| Explanation: as per the classification of milling operations. dovetailing means joint something like link together with the help of dovetail. | |
| 100. |
Angular milling can be performed more effectively by milling machine. |
| A. | horizontal |
| B. | vertical |
| C. | can’t say anything |
| D. | none of the mentioned |
| Answer» C. can’t say anything | |
| Explanation: angular milling is a type of milling that mills flat surfaces which are neither parallel or perpendicular to the axis of milling cutter. it is performed more accurately by both milling machines: horizontal and vertical. | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.