Description : Secondary Linear Axes U,V & W are ……… to X,Y & Z-axis. a.Perpendicular b.Parallel c.Rotational d.All of the above
Last Answer : b.Parallel
Description : In which machine we get feedback? a.Lathe machine b.NC machine c.CNC machine d.Milling machine
Last Answer : c.CNC machine
Description : Full form of MCU is………… a.Machine computer unit b.Machine control universal c.Machine control unit d.None of the above
Last Answer : c.Machine control unit
Description : The lost motion in CNC machine tool is on account of a.Backlash in gearing b.Wind-up of drive shafts c.Deflection of machine tool members d.All the above
Last Answer : a.Backlash in gearing
Description : Automatic tool change in CNC Machine code a.M05 b.M06 c.M07 d.M09
Last Answer : b.M06
Description : In how many ways CNC machine tool systems can be classified? a.2 b.3 c.4 d.5
Last Answer : b.3
Description : Coordinate of â- ABCD is WCS are: lowermost corner A(2,2) & diagonal corner are C(8,6). W.r.t MCS. The coordinates of origin of WCS system are (5,4). If the axes of WCS are at 600 in CCW w.r.t. the axes of MCS. Find new ... in MCS. a.(4.268, 6.732) b.(5.268, 6.732) c.(4.268, 4.732) d.(6.268, 4.732)
Last Answer : a.(4.268, 6.732)
Description : In the lathe it is the peripheral speed of the work piece cutting speed of tool is expressed inm/min, V is a.= ðœ‹ð·ð‘/1000 b.= ðœ‹ð·/1000 c.= ð·ð‘/1000 d.=ðœ‹ð·ð‘/10
Last Answer : a.= ðœ‹ð·ð‘/1000
Description : In the CNC machine which device used to hold the workpiece? a.Automatic pallet changer b.Automatic work part positioner c.A & B both d.None of the above
Last Answer : c.A & B both
Description : In CNC machining tool radius compensation turning the left mode ON programming contourdone by a.G40 b.G41 c.G42 d.G43
Last Answer : b.G41
Description : During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0the type of tool motion will be a.circular Interpolation – clockwise b.circular Interpolation – counter clockwise c.linear Interpolation d.rapid feed
Last Answer : a.circular Interpolation – clockwise
Description : Which one of the process is subtractive prototyping? a.5 axis CNC Milling b.Fused Deposition Modeling c.Multi-Jet Modeling d.Stereolithography Apparatus
Last Answer : a.5 axis CNC Milling
Description : In CNC programming …….. is commonly used canned cycle for Stock removal cycle a.G71 b.G72 c.G73 d.G74
Last Answer : d.G74
Description : The tool of an NC machine has to move along a circular arc from (5, 5) to (10, 10) while performing an operation. The centre of the arc is at (10, 5). Which one of the following NC tool path command performs the ... b.N010 GO3 X10 Y10 X5 Y5 R5 c.N010 GO1 X5 Y5 X10 Y10 R5 d.N010 GO2 X5 Y5 X10 Y10 R5
Last Answer : a.N010 GO2 X10 Y10 X5 Y5 R5
Description : ……… is a group of words or coded instruction for the NC/CNC system to execute aparticular movement. a.Sequence b.Address c.Code d.Block
Last Answer : d.Block
Description : In a CAD package, mirror image of a 2D point P (5, 10) is to be obtained about a line whichpasses through the origin and makes an angle of 45° counterclockwise with the X-axis. The coordinates of the transformed point will be a.(7.5, 5) b.(10, 5) c.(7.5, -5) d.(10, -5)
Last Answer : b.(10, 5)
Description : The STL files translate the part geometry from a CAD system to________ a.CNC machine b.VMC machine c.RP machine d.CAPP machine
Last Answer : c.RP machine
Description : In finish machining of an island on a casting with CNC milling machine, an end mill with 10 mm diameter is employed. The corner points of the island are represented by (0, 0), (0, 30), (50, 30) and (50, 0). By applying cutter radius right ... , 5), (5, 5) d.(5, 5), (45, 5), (45, 25), (5, 25), (5, 5)
Last Answer : a.(-5, 0), (-5, 35), (55, 35), (55,-5), (-5,-5)
Description : Maximum spindle speed limitation code in CNC Machine a.G90 b.G91 c.G92 d.G93
Last Answer : c.G92
Description : Repetitive CNC machine operations conveniently performing and execute with onecommand instead of programming of series of individual move called ….. a.Common Cycle b.Incremental Programming c.Canned Cycle d.None of the above
Last Answer : c.Canned Cycle
Description : In a CNC program block, N05 GO1 G91 G33 X20 Z-40 K5……, K refer to a.Depth of cut b.Pitch c.Multiple Threading Cycle d.Feed
Last Answer : b.Pitch
Description : In a CNC program block, N05 GO1 G91 G33 X20 Z-40……, G33 refer to a.Peck Drilling b.Counter Boring c.Thread Cutting d.Grooving
Last Answer : c.Thread Cutting
Description : In modeling of a tabulated cylinder, the plane of the curve is _______ a.along the curve b.normal to the curve c.along the axis of the cylinder d.perpendicular to the axis of the cylinder
Last Answer : d.perpendicular to the axis of the cylinder
Description : The rotation axis that is perpendicular to the xy plane and passes through the pivot pointis known as a.Rotation b.Translation c.Scaling d.Shearing
Last Answer : a.Rotation
Description : B rotational axis is rotation about Axis. a.X b.Y c.Z d.C
Last Answer : a.X
Description : Which of this is compulsory for 2D reflection? a.Reflection plane. b.Origin c.Reflection axis d.Co-ordinate axis.
Last Answer : c.Reflection axis
Description : Rotation is simply---------object w.r.t origin or centre point. a.Turn b.Shift c.Compression d.Drag element
Last Answer : a.Turn
Description : n an NC machining operation, the tool has to be moved from point (5, 4) to point (7, 2) alonga circular path with centre at (5, 2). Before starting the operation, the tool is at (5, 4). The G and N codes for this motion ... 0 I5.0 J2.0 c.N010 GO1 X7.0 Y2.0 I5.0 J2.0 d.N010 GOO X7.0 Y2.0 I5.0 J2.0
Last Answer : b.N010 GO2 X7.0 Y2.0 I5.0 J2.0
Description : Which of the following relations is used to represent theorem of perpendicular axes? (H = Vertical axis, I = Moment of inertia and K = Radius of gyration) a. IPQ = Ixx + AH2 b. IPQ = Ixx + Ak2 c. Izz = Ixx + Iyy d. Izz + Ixx + Iyy = 0
Last Answer : c. Izz = Ixx + Iyy
Description : Consider the following pre-conditions for correct use of a theodolite: 1. The vertical axis need not be perpendicular to the plane of the plate level bubble. 2. The line of sight must be perpendicular to the horizontal axis. 3. The axis of ... ? (a) 1, 2, 3 & 4 (b) 2 only (c) 3 only (d) 1 & 4 only
Last Answer : (b) 2 only
Description : A line AB with end point A (2,3) & B (7,8) is to be rotated about origin by 300 inclockwise direction. Determine the coordinates of end points S of rotated line. a.(3.232, 2.598) b.(5.232, 3.598) c.(3.232, 1.298) d.(3.232, 1.598)
Last Answer : d.(3.232, 1.598)
Description : Reflection about the line y=0, the axis, is accomplished with the transformationmatrix with how many elements as ‘0’? a.8 b.9 c.4 d.6
Last Answer : d.6
Description : Sketch axis orientation for CNC lathe.
Last Answer : Fig. Axis Orientation of CNC Lathe
Description : Which rule implement for axes Nomenclature? a.Left-hand rule b.Right-Hand Rule c.Thumb Rule d.None of the above
Last Answer : b.Right-Hand Rule
Description : An ellipse can also be rotated about its center coordinates by rotating a.End points b.Major and minor axes c.Only a d.None
Last Answer : b.Major and minor axes
Description : XY Plane Selection in CNC machining is done by….. a.G16 b.G17 c.G18 d.G19
Last Answer : b.G17
Description : In CNC Program M98 is refer to…… a.CANCEL Subroutine b.Call Sub-Program c.Call Subroutine d.CANCEL Sub-Program
Last Answer : b.Call Sub-Program
Description : In CNC Program M03 is refer to…… a.Spindle ON in Clockwise rotation b.Spindle ON in Counter Clockwise rotation c.Spindle OFF in Clockwise rotation d.Spindle OFF in Counter Clockwise rotation
Last Answer : a.Spindle ON in Clockwise rotation
Description : For CNC machining skilled part programmers are needed. a.TRUE b.FALSE c. d.
Last Answer : a.TRUE
Description : Which of the following is not the advantage of CNC machines? a.Higher flexibility b.Improved quality c.Reduced scrap rate d.Improved strength of the components
Last Answer : d.Improved strength of the components
Description : In CNC systems multiple microprocessors and programmable logic controllers work a.in parallel b.in series c.one after the other d.for 80% of the total machining time
Last Answer : a.in parallel
Description : CNC machining centres do not include operations like a.milling b.boring c.welding d.tapping
Last Answer : c.welding
Description : Computer will perform the data processing functions in a.NC b.CNC c.DNC d.None of the mentioned
Last Answer : b.CNC
Description : In a CNC program block, N02 GO2 G91 X40 Z40††, GO2 and G91 refer to a.circular interpolation in counter clockwise direction and incremental dimension b.circular ... in clockwise direction and incremental dimension d.circular interpolation in clockwise direction and absolute dimension
Last Answer : c.circular interpolation in clockwise direction and incremental dimension
Description : ……… is the origin of the coordinate system which is defined by manufacturer they cannotbe changed a.Blocking Point b.machine Zero Point c.Start Point d.Program Zero point
Last Answer : b.machine Zero Point
Description : The machine tool, in which calculation and setting of the operating conditions like depth ofcut, feed, speed are done during the machining by the control system itself, is called a.Computer Numerical Control System b.Direct Numerical Control System c.Machining Center System d.Adaptive Control System
Last Answer : d.Adaptive Control System
Description : Rotation about Z-axis is called…………. a.a-axis b.b-axis c.c-axis d.none of the mentioned
Last Answer : c.c-axis
Description : “CNC machine is having higher productivity than general lathe machine” Justify the statement.
Last Answer : CNC machining and conventional machining aim to achieve the same end, and both start with a raw chunk of metal or plastic and shape it into a part. CNC machine is having higher productivity than ... to cut the part, while the conventional machine would require five tools and no doubt more time.
Description : If two pure reflections about a line passing through the origin are appliedsuccessively the result is a.Pure rotation b.Quarter rotation c.Half rotation d.True reflection
Last Answer : a.Pure rotation
Description : From the following, which one will require 4 matrices to multiply to get the final position? a.Rotation about the origin b.Rotation about an arbitrary Point c.Rotation about an arbitrary line d.Scaling about the origin
Last Answer : b.Rotation about an arbitrary Point