MCQOPTIONS
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MCQOPTIONS
This section includes 455 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Forming is the operation of removing metal to the desired shape from the edge of a plate. |
| A. | Correct |
| B. | Incorrect |
| Answer» C. | |
| 52. |
The punch and die set up is __________ for punching and piercing operation. |
| A. | similar |
| B. | different |
| Answer» B. different | |
| 53. |
In sheet metal work, the cutting force on the tool can be reduced by |
| A. | grinding the cutting edges sharp |
| B. | increasing the hardness of tool |
| C. | providing shear on tool |
| D. | increasing the hardness of die |
| Answer» B. increasing the hardness of tool | |
| 54. |
The operation of cutting a number of holes evenly spaced in a regular pattern on a sheet of metal is. called perforating. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 55. |
The drawing down is a process of __________ the cross-section of a bar. |
| A. | increasing |
| B. | reducing |
| Answer» C. | |
| 56. |
Scab is a casting defect which occurs as sand patches on the upper surface of a casting. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 57. |
Fin is a casting defect which is due to thin projections of metal not intended as a part of casting. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 58. |
In a cold chamber die casting machine, a measured quantity of molten metal is brought in a ladle from the melting pot to a chamber and forced into the closed die-section by applying hydraulic pressure upon the plunger. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 59. |
In a cold chamber die casting machine, only non-ferrous alloys with __________ are casted. |
| A. | low melting temperature |
| B. | high melting temperature |
| Answer» C. | |
| 60. |
The casting method adopted for ornaments and toys of non-ferrous alloys, is |
| A. | permanent mould casting |
| B. | slush casting |
| C. | die casting |
| D. | centrifugal casting |
| Answer» C. die casting | |
| 61. |
In a __________ , the molten metal is poured and allowed to solidify while the mould is revolving. |
| A. | die casting method |
| B. | slush casting method |
| C. | permanent mould casting method |
| D. | centrifugal casting method |
| Answer» E. | |
| 62. |
A pouring basin acts as a reservoir for the molten metal. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 63. |
In order to deliver molten metal from pouring basin to gate, a __________ is used. |
| A. | riser |
| B. | sprue |
| C. | core |
| Answer» C. core | |
| 64. |
If the sand is too fine, its permeability will be high. |
| A. | True |
| B. | False |
| Answer» C. | |
| 65. |
The adhesiveness is the property of a sand due to which |
| A. | it evolves a great amount of steam and other gases |
| B. | the sand grains stick together |
| C. | it cling to the sides of a moulding box |
| D. | none of these |
| Answer» D. none of these | |
| 66. |
The property of sand due to which the sand grains stick together, is called |
| A. | collapsibility |
| B. | permeability |
| C. | cohesiveness |
| D. | adhesiveness |
| Answer» D. adhesiveness | |
| 67. |
A stripper-plate machine is used to draw the pattern from the mould. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 68. |
In order to ram the sand harder at the back of the mould and softer on the pattern face, a __________ is used. |
| A. | sand slinger |
| B. | squeezing machine |
| C. | jolt machine |
| D. | stripper plate machine |
| Answer» C. jolt machine | |
| 69. |
In order to produce uniform packing of sand in the moulds, a __________ is used. |
| A. | sand slinger |
| B. | squeezing machine |
| C. | jolt machine |
| D. | stripper plate machine |
| Answer» B. squeezing machine | |
| 70. |
Gagger is used for cleaning the moulding sand. |
| A. | Correct |
| B. | Incorrect |
| Answer» C. | |
| 71. |
For smoothing and cleaning out depressions in the mould, a __________ is used. |
| A. | slick |
| B. | lifter |
| C. | swab |
| D. | gagger |
| Answer» C. swab | |
| 72. |
Slick is used for repairing and finishing the mould. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 73. |
Shrinkage allowance is made by adding to external dimensions and subtracting from internal dimensions. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 74. |
Metal patterns require __________ draft allowance than wooden patterns. |
| A. | more |
| B. | less |
| Answer» C. | |
| 75. |
When a pattern is made in three parts, the __________ is known as a drag. |
| A. | bottom part |
| B. | middle part |
| C. | top part |
| Answer» B. middle part | |
| 76. |
Which of the following material can be used for making patterns ? |
| A. | Aluminium |
| B. | Wax |
| C. | Lead |
| D. | all of these |
| Answer» E. | |
| 77. |
A pattern is used to make the mould cavity for pouring the molten metal for casting. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 78. |
A gimlet is a __________ tool. |
| A. | boring |
| B. | marking |
| Answer» B. marking | |
| 79. |
A saw which cuts wood during the return stroke of the saw is known as |
| A. | push saw |
| B. | pull saw or draw saw |
| Answer» C. | |
| 80. |
Hot piercing is extensively used for making bolts and nuts. |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 81. |
Cold working requires much higher pressure that hot working. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 82. |
Cold working distorts grain structure and does not provide an appreciable reduction in size. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 83. |
The correct sequence for preparing a billet for extrusion process is pickling, alkaline cleaning, phosphate coating and lubricating with reactive soap. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 84. |
In a four high rolling mill, the diameter of backing up rolls is __________ the diameter of working rolls. |
| A. | equal to |
| B. | smaller than |
| C. | larger than |
| Answer» D. | |
| 85. |
The two rolls in a two high rolling mills are of __________ size. |
| A. | equal |
| B. | different |
| Answer» B. different | |
| 86. |
The minimum size of a billet is 10 cm x 10 cm. |
| A. | Agree |
| B. | Disagree |
| Answer» C. | |
| 87. |
The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded) |
| A. | t |
| B. | .5 t |
| C. | t |
| D. | t |
| Answer» B. .5 t | |
| 88. |
For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately |
| A. | 2 mm |
| B. | 4 mm |
| C. | 6 mm |
| D. | 8 mm |
| Answer» D. 8 mm | |
| 89. |
In TIG arc welding, the welding zone is shielded by an atmosphere of |
| A. | elium gas |
| B. | rgon gas |
| C. | ither (A) or (B) |
| D. | one of these |
| Answer» D. one of these | |
| 90. |
The operation of bending a sheet of metal along a curved axis, is known as |
| A. | lunging |
| B. | otching |
| C. | litting |
| D. | orming |
| Answer» E. | |
| 91. |
The teeth of hacksaw blade are bent |
| A. | owards right |
| B. | owards left |
| C. | lternately towards right and left and every third or fourth left straight |
| D. | ay be bent in any direction |
| Answer» D. ay be bent in any direction | |
| 92. |
The recrystallisation temperature of steel is |
| A. | 00°C |
| B. | 00°C |
| C. | 00°C |
| D. | one of these |
| Answer» D. one of these | |
| 93. |
In piercing operation, the clearance is provided on |
| A. | unch |
| B. | ie |
| C. | alf on the punch and half on the die |
| D. | ither on punch or die depending upon designer's choice |
| Answer» C. alf on the punch and half on the die | |
| 94. |
In blanking operation, the clearance is provided on |
| A. | unch |
| B. | ie |
| C. | alf on the punch and half on the die |
| D. | ither on punch or die depending upon designer's choice |
| Answer» B. ie | |
| 95. |
V-block is used to |
| A. | heck the trueness of flat surfaces |
| B. | ocate centres of round rods |
| C. | heck the surface roughness |
| D. | one of these |
| Answer» E. | |
| 96. |
A hacksaw blade cuts on the |
| A. | orward stroke |
| B. | eturn stroke |
| C. | oth forward and return strokes |
| D. | utting depends upon the direction of force |
| Answer» B. eturn stroke | |
| 97. |
Structural sections such as rails, angles, I-beams are made by |
| A. | ot rolling |
| B. | ot drawing |
| C. | ot piercing |
| D. | ot extrusion |
| Answer» B. ot drawing | |
| 98. |
During drawing operation, the states of stress in cup would include |
| A. | ompressive stress in the flange |
| B. | ensile stress in the wall |
| C. | oth (A) and (B) |
| D. | one of these |
| Answer» D. one of these | |
| 99. |
The consumable electrode is used in |
| A. | arbon arc welding |
| B. | ubmerged arc welding |
| C. | IG arc welding |
| D. | IG arc welding |
| Answer» E. | |
| 100. |
A ring gauge is used to |
| A. | heck the diameter of shafts or studs |
| B. | est the accuracy of holes |
| C. | heck the clearance between two mating surfaces |
| D. | ll of the above |
| Answer» B. est the accuracy of holes | |