Manufacturing Technology MCQ with Answers pdf
1. The carbide tools operating at very low cutting speeds (below 30 m/min)
A. Reduces tool life
B. Increases tool life
C. Have no effect on tool life
D. Spoils the work piece
Answer: Option A
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2. The type of reamer used for reaming operation in a blind hole, is
A. Straight fluted reamer
B. Left hand spiral fluted reamer
C. Right hand spiral fluted reamer
D. Any one of these
Answer: Option C
Solution:
Right hand spiral reamers should be selected for blind holes.
- Additionally a right hand spiral also helps bridge interruptions such as cross-holes or keyways.
- A right hand spiral reamer may cut slightly oversized holes due to the aggressive flute geometry.
- They perform very well in highly ductile materials.
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3. Stellite preserves hardness up to a temperature of
A. 350°C
B. 500°C
C. 900°C
D. 1100°C
Answer: Option D
Solution:
Stellite alloys are composed of various amounts of cobalt, nickel, iron, aluminium, boron, carbon, chromium,
manganese, molybdenum, phosphorus, sulfur, silicon, and titanium. Stellite preserves hardness up to a
temperature of 1100°C
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4. High speed steel tools retain their hardness up to a temperature of
A. 250°C
B. 350°C
C. 500°C
D. 900°C
Answer: Option D
5. For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of
A. 50°C
B. 100°C
C. 175°C
D. 275°C
Answer: Option B
6. In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to
A. Circular interpolation in counter clockwise direction and incremental dimension
B. Circular interpolation in counter clockwise direction and absolute dimension
C. Circular interpolation in clockwise direction and incremental dimension
D. Circular interpolation in clockwise direction and absolute dimension
Answer: Option C
Solution:
G02 – Circular interpolation in a clockwise direction
G91 – incremental dimension
Answer & Solution
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8. In determining the various forces on the chip, Merchant assumed that the
A. Cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
B. Only continuous chip without built-up-edge is produced
C. Cutting velocity remains constant
D. All of the above
Answer: Option D
Solution:
Assumption in Merchant's Force Circle:
- The chip is considered in equilibrium under action of two equal and opposite collinear forces.
-The stress is maximum at the shear plane and it remains constant.
- The shear takes place in a direction in which the energy required for shearing is minimum
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9. In order to achieve a specific surface finish in single point turning, the most important factor to be controlled is
A. Depth of cut
B. Cutting speed
C. Feed
D. Tool rake angle
Answer: Option B
Solution:
In order to achieve a specific surface finish in single-point turning, the most important factor to be controlled is
Cutting Speed
other parameters will impact on the surface finish:
-Minimize Deflection and Chatter, Keeping Tool Rigidity Up
-Use Balanced Tooling to Reduce Vibration
-Minimize Runout
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10. The factor responsible for the formation of continuous chips with built up edge is
A. Low cutting speed and large rake angle
B. Low cutting speed and small rake angle
C. High cutting speed and large rake angle
D. High cutting speed and small rake angle
Answer: Option B
Solution:
-continuous chip with built up edge. a built up edge (BUE) is an accumulation of material against the rake face,
that seizes to the tool tip, separating it from the chip - Discontinuous chips are formed during machining of brittle
metals while continuous chips with built up edge are formed during machining of ductile materials at low cutting speed
Manufacturing Technology MCQ with Answers pdf
11. The material which on machining produces chips with built up edge is
A. Brittle material
B. Tough material
C. Hard material
D. Ductile material
Answer: Option D
Solution:
Ductile material Produces Chips with built up edge.
Built up edge (BUE) is an accumulation of material against the rake face, that seizes to the tool tip, separating it from the chip.
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12. A 15 mm drilling machine means that it can drill a hole
A. Of maximum diameter 15 mm
B. In 15 mm thick plates
C. Having cross-sectional area of 15 mm
D. None of these
Answer: Option A
Solution:
A 15 mm drilling machine means that it can drill a hole of maximum diameter 15 mm.
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13. The binding material used in cemented carbide tools is
A. Tungsten
B. Chromium
C. Silicon
D. Cobalt
Answer: Option D
Solution:
the material that makes up the tools and inserts, is actually grains of tungsten carbide, along with particles of
other materials, cemented together using the metal cobalt as a binder. There are several tungsten ores that can be mined and refined into tungsten or made into tungsten carbide
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14. In the relation VT = C, the value of n for carbide tools is
A. 0.1 to 0.2
B. 0.20 to 0.25
C. 0.25 to 0.40
D. 0.40 to 0.55
Answer: Option B
In Taylor tool life equation as (VT = c)
V = velocity of the cutting tool (m/min),
T = tool life (min) c, n,, taylors coeffiecients
The value of n for carbide tools is 0.20 to 0.25
15. In the relation VT = C, the value of n for ceramic tools is
A. 0.1 to 0.2
B. 0.20 to 0.25
C. 0.25 to 0.40
D. 0.40 to 0.55
Answer: Option D
Solution:
In Taylor tool life equation as (VT = c)
V = velocity of the cutting tool (m/min),
T = tool life (min)
c, n,, taylors coeffiecients
The value of n for ceramic tools is 0.40 to 0.55
Manufacturing Technology MCQ with Answers pdf
16. For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is
A. 10 m/min
B. 15 m/min
C. 22 m/min
D. 30 m/min
Answer: Option C
Solution:
For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is 22 m/min and for a mild steel is 30 m/min
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17. For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
A. 5 m/min
B. 10 m/min
C. 15 m/min
D. 30 m/min
Answer: Option D
Solution:
For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is 22 m/min and for a mild steel is 30 m/min
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18. The specific cutting energy used for establishing the machinability of the metal depends upon its
A. Coefficient of friction
B. Micro-structure
C. Work hardening characteristics
D. All of these
Answer: Option D
Solution:
Specific energy in metal cutting, defined as the energy expended in removing a unit volume of workpiece
material. The specific cutting energy used for establishing the machinability of the metal depends upon its -
Coefficient of friction -Micro-structure -Work hardening characteristics
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19. The cutting speed of a drill depends upon the
A. Material of drill
B. Type of material to be drilled
C. Quality of surface finish desired
D. All of these
Answer: Option D
Solution:
The cutting speed of a drill depends upon the -Material of drill -Type of material to be drilled - Quality of surface finish desired
20. The size of abrasive grain required in a grinding wheel depends upon the
A. Amount of material to be removed
B. Hardness of material being ground
C. Finish desired
D. All of these
Answer: Option B
Solution:
The size of Abrasive grain required in a Grinding wheel depends on the amount of material to be removed, desired finishing, and the hardness
Manufacturing Technology MCQ with Answers pdf
21. Flank wear depends upon the
A. Hardness of the work and tool material at the operating temperature
B. Amount and distribution of hard constituents in the work material
C. Degree of strain hardening in the chip
D. All of these
Answer: Option B
Solution:
Flank wear occurs on the relief (flank) face of the tool. Flank wear occurs as a result of friction between the progressively increasing contact area on the tool flank.
22. Crack in grinding wheel is developed due to
A. High temperature developed at the contact of the wheel face and work
B. Grinding hard work
C. Low speed of wheel
D. High speed of wheel
Answer: Option D
Solution:
Crack in grinding wheel is developed due to High speed of wheel
23. The machining of titanium is difficult due to
A. High thermal conductivity of titanium
B. Chemical reaction between tool and work
C. Low tool-chip contact area
D. None of these
Answer: Option C
Solution:
Machining operations of titanium alloys are considered to be difficult, due to its relatively high tensile strength, low ductile yield, Low tool-chip contact area
24. The angle formed by the leading edge of the land with a plane having the axis of the drill, is called
A. Helix or rake angle
B. Point angle
C. Chisel edge angle
D. Lip clearance angle
Answer: Option A
Solution:
The angle formed by the leading edge of the land with a plane having the axis of the drill, is called Helix or rake angle The rake angle is the angle of the surface of a cutting tool tip over which the removed chips flow. The rake angle is the angle between the front or cutting face of the tool and a line perpendicular to the workpiece
25. 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: Option C
Solution:
The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called
Chisel edge angle It is the angle included between the chisel edge and lip of the twist drill when measuring on a plane normal to the axis
Manufacturing Technology MCQ with Answers pdf
26. Segmental chips are formed during machining
A. Mild steel
B. Cast iron
C. High speed steel
D. High carbon steel
Answer: Option B
Solution:
Segmental Chips- It means chips become broken pieces before it departs from the cutter. It is often happened in high brittle materials, such as cast iron or bronze. Such as discontinuous chip caused by higher friction coefficient or higher soft ductile materials, it means poor cutting conditions
27. When the cutting edge of the tool is dull, then during machining
A. Continuous chips are formed
B. Discontinuous chips are formed
C. Continuous chips with built-up edge are formed
D. No chips are formed
Answer: Option C
28. In oblique cutting system, the cutting edge of the tool
A. May clear the width of the workpiece
B. May or may not clear the width of the workpiece
C. May not clear the width of the workpiece
D. Should always clear the width of the workpiece
Answer: Option C
Solution:
In Oblique cutting, cutting edge travels, making an angle with the normal of cutting edge. In oblique cutting system, the cutting edge of the tool May not clear the width of the workpiece
29. The velocity of tool along the tool face is known as
A. Shear velocity
B. Chip velocity
C. Cutting velocity
D. Mean velocity
Answer: Option B
Solution:
The velocity of tool along the tool face is known as Chip Velocity
30. Which of the following operation is first performed?
A. Spot facing
B. Boring
C. Tapping
D. Drilling
Answer: Option D
What are the 4 types of manufacturing technology?
There are many types of manufacturing technology, but here are four common categories:
Casting technology: This involves pouring molten metal, plastic or other materials into a mold to create a specific shape. The material then solidifies and the mold is removed to reveal the finished product. Casting technology is often used to create complex shapes or parts that are difficult or impossible to produce using other methods.
Forming technology: This involves changing the shape of a material without removing any material. Examples include bending, folding, and stretching metal sheets, or extruding plastic into a specific shape. Forming technology is often used to create parts with complex geometries or parts with specific performance characteristics, such as strength or flexibility.
Machining technology: This involves removing material from a block of material to create a specific shape. This can be done using cutting tools such as drills, lathes, or milling machines. Machining technology is often used to create precise parts with tight tolerances or parts with complex geometries.
Joining technology: This involves combining two or more materials into a single part. Examples include welding, soldering, and adhesive bonding. Joining technology is often used to create parts that are stronger or more durable than could be achieved by using a single material.
What is an example of production technology?
Production technology refers to the tools, machines, and techniques used to produce goods or services. An example of production technology would be a CNC (Computer Numerical Control) machine used in manufacturing. These machines use computer-controlled motors to move cutting tools and shape materials such as metal, plastic, or wood into precise shapes and sizes. CNC machines are widely used in the manufacturing of a variety of products such as automobile parts, aerospace components, and medical devices. Another example of production technology is 3D printing, which uses computer-controlled additive manufacturing techniques to build three-dimensional objects layer by layer. 3D printing is used in various industries, including aerospace, automotive, and healthcare, to produce custom parts and prototypes.
What is the importance of production technology in manufacturing?
Production technology is essential in manufacturing because it enables the creation of products in an efficient, effective, and cost-effective way. The following are some of the reasons why production technology is important in manufacturing:
Improved efficiency: Production technology can help to streamline manufacturing processes, reducing the time and resources needed to produce a product. This increased efficiency can lead to higher productivity, greater throughput, and lower costs.
Increased quality: By using advanced production technology, manufacturers can improve the quality of their products. For example, computer-controlled manufacturing processes can produce parts and products to precise specifications, resulting in higher-quality finished products.
Cost reduction: Production technology can help to reduce the cost of manufacturing, which can translate into lower prices for consumers. For example, using automation to replace manual labor can reduce labor costs, and using advanced manufacturing techniques can reduce material waste.
Flexibility: Advanced production technology can help manufacturers to be more flexible in responding to changes in market demand. For example, computer-controlled manufacturing processes can be reprogrammed quickly to produce different products or product variations, without the need to retool the entire manufacturing process.
Innovation: By leveraging advanced production technology, manufacturers can innovate and create new products and services. For example, using additive manufacturing techniques, such as 3D printing, can enable the creation of complex products that would be difficult or impossible to produce using traditional manufacturing techniques.
Overall, production technology is essential for manufacturers to remain competitive, meet customer needs, and stay ahead of industry trends.
What are 2 examples of manufacturing technologies?
Here are two examples of manufacturing technologies:
Additive Manufacturing: Additive manufacturing, also known as 3D printing, is a technology that creates three-dimensional objects by adding successive layers of material. This technology has revolutionized manufacturing in recent years, as it allows for the creation of complex parts with high accuracy and speed. Additive manufacturing is used in a wide range of industries, including aerospace, automotive, medical, and consumer products.
Computer Numerical Control (CNC) Machining: CNC machining is a manufacturing technology that uses computer-controlled machines to create parts from raw materials. This technology allows for precise and repeatable machining operations, and is used in industries ranging from automotive and aerospace to electronics and medical devices. CNC machines can be programmed to perform a variety of tasks, including milling, turning, drilling, and grinding, and are often used to create complex parts with tight tolerances.
Manufacturing Technology MCQ with Answers pdf
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