Milling MCQ Quiz in తెలుగు - Objective Question with Answer for Milling - ముఫ్త్ [PDF] డౌన్‌లోడ్ కరెన్

Last updated on Mar 14, 2025

పొందండి Milling సమాధానాలు మరియు వివరణాత్మక పరిష్కారాలతో బహుళ ఎంపిక ప్రశ్నలు (MCQ క్విజ్). వీటిని ఉచితంగా డౌన్‌లోడ్ చేసుకోండి Milling MCQ క్విజ్ Pdf మరియు బ్యాంకింగ్, SSC, రైల్వే, UPSC, స్టేట్ PSC వంటి మీ రాబోయే పరీక్షల కోసం సిద్ధం చేయండి.

Latest Milling MCQ Objective Questions

Top Milling MCQ Objective Questions

Milling Question 1:

A milling cutter having 8 teeth is rotating at 150 rpm. If the feed per tooth is 0.1, the table speed in mm per minute is

  1. 120
  2. 187
  3. 125
  4. 70

Answer (Detailed Solution Below)

Option 1 : 120

Milling Question 1 Detailed Solution

Concept:

Table speed (V) per minutes is given by,

V = f × N × t

Where, f = Feed per tooth, N = Number of rpm, t = Number of teeth.

Calculation:

f = 0.1 per tooth, N = 150 rpm, t = 8 teeth.

V = f × N × t

∴  V = 0.1 × 150 × 8 = 120 mm/minute

The table speed is 120 mm/minute

Milling Question 2:

What is the helical angle of light-duty plain milling cutters?

  1. 20°
  2. 25°
  3. 35°
  4. 45°

Answer (Detailed Solution Below)

Option 2 : 25°

Milling Question 2 Detailed Solution

Explanation:

Light duty plain milling cutters:

  • These are less than 19mm wide and usually have straight teeth.
  • Those over 19mm wide have a helix angle of about 25°.
  • This type of cutter is used only for light milling operations since it has too many teeth to permit the chip clearance required for heavier cuts.

 F1 Savita Engineering 16-9-22 D10

F1 Savita Engineering 16-9-22 D11

Milling Question 3:

A milling cutter having 8 teeth is rotating at 200 r.p.m. If the feed per tooth is 0.1 mm, then what is its speed?

  1. 70 mm per minute
  2. 87 mm per minute
  3. 160 mm per minute
  4. 120 mm per minute

Answer (Detailed Solution Below)

Option 3 : 160 mm per minute

Milling Question 3 Detailed Solution

Concept:

Table speed (V) per minutes is given by,

V = f × N × t

Where, f = Feed per tooth, N = Number of rpm, t = Number of teeth.

Calculation:

f = 0.1 mm/tooth, N = 200 rpm, t = 8 teeth.

V = f × N × t

∴  V = 0.1 × 200 × 8 = 160 mm/minute

The table speed is 160 mm/minute

Milling Question 4:

_________ is the operation of machining two vertical surfaces of the work piece at a time.

  1. End milling
  2. Side milling
  3. Straddle milling
  4. Form milling

Answer (Detailed Solution Below)

Option 3 : Straddle milling

Milling Question 4 Detailed Solution

Concept:

Milling is the machine operation in which the removal of metal from the work piece takes place due to a rotating cutting tool(cutter) when the work is fed past it. The cutter has multiple cutting edges and rotates at a very fast rate.

SSC JE ME Live test-2 Images-Q74

In Straddle milling two side milling cutters are mounted with a desired distance between them so that both sides of a work piece can be milled simultaneously.

Different operations performed on milling machine:

  1. Plain milling or slab milling: It is a method of producing a plain, flat, horizontal surface parallel to the axis of rotation of the cutter.
  2. Face milling: It is a method of producing a flat surface at right angles to the axis of the cutter.
  3. Side milling: It is the operation of production of a flat vertical surface on the side of a work-piece by using a side milling cutter.
  4. Angular milling:  It is a method of producing a flat surface making an angle to the axis of the cutter.
  5. Gang-milling:  It is a method of milling by means of two or more cutters simultaneously having the same or different diameters mounted on the arbor of the milling machine.
  6. Form milling: It is, a method of producing a surface having an irregular outline.
  7. End milling: It is a method of milling slots, flat surfaces, and profiles by end mills.
  8. Profile milling: It is the operation of reproduction of an outline of a template or complex shape of a master die on a workpiece.
  9. Saw milling: It is a method of producing deep slots and cutting materials into the required length by slitting saws.
  10. Helical milling: It is the operation of producing helical flutes or grooves around the periphery of a cylindrical or conical workpiece.
  11. Flute milling: It is a method of grooving or cutting of flutes on drills, reamers, taps, etc.
  12. Thread milling: It is a method of milling threads on dies, screws, worms, etc. both internally and externally. 

Milling Question 5:

A mild steel block of width 40 mm is being milled using a straight slab cutter 70 mm diameter with 30 teeth. If the cutter rotates at 40 rpm, and depth of cut is 2 mm, what is the value of maximum uncut chip thickness when the table feed is 20 mm / min?

  1. 0.00263 mm
  2. 0.00363 mm
  3. 0.00463 mm
  4. 0.00563 mm

Answer (Detailed Solution Below)

Option 4 : 0.00563 mm

Milling Question 5 Detailed Solution

Concept:

Maximum Uncut chip thickness in milling is given as, \(t_{max}=\frac{2f_m}{NZ}\sqrt{\frac{d}{D}}\)

where, fm =  table feed, N = rpm, Z = number of teeth, d =  depth of cut, D = diameter of cutter

Calculation:

Given:

D = 70 mm, d = 2 mm, fm = 20 mm/min, N = 40 rpm, Z = 30

Therefore, \(t_{max}=\frac{2~\times~20}{40~\times~30}\sqrt{\frac{2}{70}}\)

Maximum uncut chip thickness = 0.00563 mm

Milling Question 6:

________ is a machining process performed by a rotating multi-point cutting tool to generate the surface by progressive chip removal

  1. Grinding
  2. Turning
  3. Shaping
  4. Milling

Answer (Detailed Solution Below)

Option 4 : Milling

Milling Question 6 Detailed Solution

Explanation:

Milling:

  • Milling operations involve using multi-point rotary cutters to remove material from a workpiece by progressive chip removal.
  • There are two main types of milling operations:
    1. Face milling 
    2. Peripheral milling
  • Face milling cuts flat surfaces into the workpiece and flat-bottomed cavities. The feed can be either horizontal or vertical.
  • Peripheral milling cuts deep slots, threads, and gear teeth.
  • The workpiece can be fed into the cutting tool in either of two ways.
  • Conventional milling involves feeding the workpiece against the cutter rotation. This is the recommended method for manual milling machines.
  • Climb milling (Down Milling), on the other hand, feeds the workpiece in the same direction as the cutter rotation. This is the preferred method for CNC milling.
  • Milling is best applied as a secondary process to an already machined workpiece. It helps to define features and serves as a “finishing coat”. Use milling as a secondary process to add features such as holes, slots, pockets, and contours.

Additional InformationGrinding:

  • Grinding is an abrasive machining process that uses a grinding wheel or grinder as the cutting tool. Grinding is a subset of cutting, as grinding is a true metal-cutting process. Grinding is very common in mineral processing plants and the cement industry.
  • Grinding is used to finish workpieces that must show high surface quality and high accuracy of shape and dimension. It has some roughing applications in which grinding removes high volumes of metal very rapidly.

Turning:

  • Turning is a form of machining, a material removal process, which is used to create rotational parts by cutting away unwanted material. The turning process requires a turning machine or lathe, workpiece, fixture, and cutting tool.
  • The workpiece is a piece of pre-shaped material that is secured to the fixture, which itself is attached to the turning machine, and allowed to rotate at high speeds. The cutter is typically a single-point cutting tool that is also secured in the machine, although some operations make use of multi-point tools.
  • The cutting tool feeds into the rotating workpiece and cuts away material in the form of small chips to create the desired shape.

Milling Question 7:

The cutting tool in a milling machine is mounted on 

  1. Spindle 
  2. Knee 
  3. Column 
  4. Arbour 

Answer (Detailed Solution Below)

Option 4 : Arbour 

Milling Question 7 Detailed Solution

Explanation:

A milling machine is a machine tool in which metal is removed by means of a revolving cutter with many teeth, each tooth having a cutting edge which removes metal from a workpiece.

The work is supported by various methods on the work table and may be fed to the cutter, longitudinally, transversely or vertically.

Some parts of the horizontal milling machine:

Arbor:

  • Its one end is attached to the column and the other end is supported by an overarm
  • It holds and drives different types of milling cutters


Spindle:

  • It gets power from gears, belt drives to drive the motor
  • It has provision to add or remove milling cutters onto the arbor


F1 S.S Shashi 31.07.2019 D 2

Milling Question 8:

Consider the following statements about down milling operation are incorrect,

A. Tool life is higher than that in up milling.

B. Surface finish produced in down milling is better than in up milling.

C. Chip thickness is maximum at the end of the machining operation.

D. No significant effect of backlash in down milling.

Which of the above are not the characteristic of down milling?

  1. A, C, D
  2. B, C
  3. A, C
  4. C, D

Answer (Detailed Solution Below)

Option 4 : C, D

Milling Question 8 Detailed Solution

Explanation:

Characteristics of down milling:

  1. In down milling, cutter rotation and table movement are in the same direction so, the force acting on the tooltip is lower; hence the tool life is higher in this case. so statement A is the characteristic of down milling.
  2. There is a high effect of backlash in down milling as the direction of cutter and table movement is the same so, the cut surface remains in contact with the cutter for a longer period of time so statement D is not the characteristic of down milling.
  3. Surface finish produced in down milling is better than up milling because the cutter pushes the workpiece to the downward side, which gives better stability to cutting operation, so statement B is the characteristic of down milling.
  4. In down milling, the chip thickness reduces from maximum to minimum so statement C is not the characteristic of down milling.

Milling Question 9:

Two cutters are mounted on the arbor so that two faces are machined simultaneously in

  1. Gang milling
  2. Straddle milling
  3. Pendulum milling
  4. Profile milling

Answer (Detailed Solution Below)

Option 2 :
Straddle milling

Milling Question 9 Detailed Solution

Explanation:

Milling:

  • Milling is the machine operation in which the removal of metal from the workpiece takes place due to a rotating cutting tool (cutter) when the work is fed past it.
  • The cutter has multiple cutting edges and rotates at a very fast rate.

SSC JE ME Live test-2 Images-Q74

In Straddle milling, two side milling cutters are mounted with the desired distance between them so that both sides of a work piece can be milled simultaneously.

Different operations performed on a milling machine:

  • Plain milling or slab milling: It is a method of producing a plain, flat, horizontal surface parallel to the axis of rotation of the cutter.

F1 S.S Madhu 04.02.20 D5

  • Face milling: It is a method of producing a flat surface at right angles to the axis of the cutter.

F1 S.S Madhu 04.02.20 D1

  • Side milling: It is the operation of production of a flat vertical surface on the side of a work-piece by using a side milling cutter.
  • Angular milling: It is a method of producing a flat surface making an angle to the axis of the cutter.
  • Gang-milling: It is a method of milling by means of two or more cutters simultaneously having the same or different diameters mounted on the arbor of the milling machine.

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  • Form milling: It is, a method of producing a surface having an irregular outline.

F1 S.S Madhu 04.02.20 D4

  • End milling: It is a method of milling slots, flat surfaces, and profiles by end mills.
  • Profile milling: It is the operation of reproduction of an outline of a template or complex shape of a master die on a workpiece.
  • Saw milling: It is a method of producing deep slots and cutting materials into the required length by slitting saws.
  • Helical milling: It is the operation of producing helical flutes or grooves around the periphery of a cylindrical or conical workpiece.
  • Flute milling: It is a method of grooving or cutting of flutes on drills, reamers, taps, etc.
  • Thread milling: It is a method of milling threads on dies, screws, worms, etc. both internally and externally. 

Milling Question 10:

Compared with Four axis milling machines, the six axis milling machine capable to do ________.

  1. moving and rotating about each primary axis simultaneously
  2. moving and rotating about each primary axis not simultaneously
  3. rotating only about each primary axis not simultaneously
  4. moving only about each primary axis simultaneously

Answer (Detailed Solution Below)

Option 1 : moving and rotating about each primary axis simultaneously

Milling Question 10 Detailed Solution

Explanation:-

Milling Machine:

A milling machine removes material from a workpiece by rotating a cutting tool and moving it into the workpiece

based on work required in a different types axis, The milling machines are of different types. Hence, out of this the difference between the four-axis and six-axis milling machines are as follows-

   S.N.  Four-axis Milling Machine

Six - axis Milling Machine

1     A 4-axis Milling machine operates on the X,Y, and Z axes like a 3-axis machine, but it also includes rotation around the X-axis, which is called the A-axis. 6-axis machining involves all the axes of 4-axis machining, with two additional rotational axis.
In a four-axis milling machine, The machine operates on the X,Y, and Z axis with only One extra rotation around the X-axis.  While in the case of the six-axis Milling machine, The machine operates on rotation about all the X, Y, and Z-axis along with the linear X, Y, and Z-axis. Hence we can say that compared to the four-axis milling machines, the six-axis milling machine is capable to do moving and rotating about each primary axis simultaneously.
4-axis machining is multifunctional and is considered optimal for:
 - Engraving curved surfaces
 - Intermittent cutting
 - Continuous cutting this

This machining process is ideal for:

 - Achieving the highest possible precision

 - Fast and accurate speeds
 - Reduced process time
 - Manufacturing parts with the best level of intricacies

 

 

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