# Quiz About Iron And Steel Manufacturing!

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The iron and steel Industry is the basic industry since all the other industries — heavy, medium and light, depend on it for their machinery. Steel is needed to manufacture a variety of engineering goods, construction material, defence, medical, telephonic, scientific equipment and a variety of consumer goods.
This is a Quiz about Iron and Steel Manufacturing!

• 1.

### What is the name of work holding device were the irregular work could hold in lathe?

• A.

Face plate

• B.

Catch plate

• C.

B-Jaw chuck

• D.

Driving place

A. Face plate
Explanation
A face plate is a work holding device used in a lathe where irregularly shaped workpieces can be securely held. It is a flat circular plate that is attached to the spindle of the lathe. The workpiece is bolted or clamped onto the face plate, allowing it to be rotated and machined accurately. The face plate provides a large surface area for gripping the workpiece, making it suitable for holding irregularly shaped or large workpieces that cannot be held by other types of chucks or fixtures.

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• 2.

### What is angle between the two faces of angle plate?

• A.

30° 90°

• B.

45°

• C.

60°

• D.

90°

D. 90°
Explanation
The angle between the two faces of an angle plate is 90°. This is because an angle plate is a tool used in machining to hold workpieces at a right angle (90°) to each other. The two faces of the angle plate are designed to be perpendicular to each other, forming a right angle. This allows for precise and accurate machining operations that require perpendicularity.

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• 3.

### Which material is used to make angle plate?

• A.

Mild steel

• B.

Cast iron

• C.

Tool steel

• D.

Wrought iron

B. Cast iron
Explanation
Cast iron is commonly used to make angle plates because it is a strong and durable material. It has excellent heat resistance and can withstand high temperatures without warping or deforming. Cast iron also has good vibration damping properties, which makes it ideal for use in machine tool applications. Additionally, it is relatively easy to machine and has good wear resistance, making it suitable for use in repetitive and heavy-duty operations.

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• 4.

### What does the letter ‘a’ denotes?

• A.

Sampling length

• B.

Roughness values

• C.

Production method

• D.

Machining allowance

B. Roughness values
Explanation
The letter 'a' denotes roughness values. Roughness values refer to the irregularities or deviations in the surface texture of an object. These irregularities can be measured and quantified using various methods, such as Ra (average roughness) or Rz (mean roughness depth). The roughness values provide information about the quality and smoothness of a surface, which is important in many industries, including manufacturing, engineering, and automotive.

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• 5.

### How the roughness value is expressed?

• A.

Micrometer

• B.

Millimetre

• C.

Centimetre

• D.

Metre

A. Micrometer
Explanation
The roughness value is expressed in micrometers. Micrometer is a unit of measurement that is equal to one millionth of a meter. It is commonly used to measure small distances or dimensions, such as the roughness of a surface.

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• 6.

### What is the roughness grade number for symbol?

• A.

N1 to N3

• B.

N4 to N6

• C.

N11

• D.

N12

A. N1 to N3
Explanation
The roughness grade number for symbol N1 to N3 represents a surface roughness that is relatively smooth. This means that the surface has minimal imperfections and is considered to have a fine finish. The N1 to N3 range indicates that the roughness grade number falls within the lower end of the scale, suggesting a smoother surface compared to higher grade numbers.

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• 7.

### What is the surface roughness symbol marked as ‘X’?

• A.

Direction of lay

• B.

Sampling length

• C.

Machining allowance

• D.

Roughness value

C. Machining allowance
Explanation
The surface roughness symbol marked as 'X' represents the machining allowance. Machining allowance refers to the additional material intentionally left on the surface during the machining process. It allows for subsequent finishing operations or adjustments to be made to achieve the desired final dimensions and surface finish.

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• 8.

### What is the roughnes value of grade No N1?

• A.

6.3 microns

• B.

0.025 microns

• C.

12.5 microns

• D.

0.4 microns

B. 0.025 microns
Explanation
The roughness value of grade No N1 is 0.025 microns.

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• 9.

### Which material used for manufacturing a marking table?

• A.

Cast iron

• B.

Aluminium

• C.

Tool steel

• D.

Mild steel

A. Cast iron
Explanation
Cast iron is the correct answer because it is a commonly used material for manufacturing marking tables. Cast iron has excellent stability and rigidity, making it suitable for heavy-duty applications. It has a high resistance to wear, ensuring the durability of the marking table. Additionally, cast iron has good vibration damping properties, which helps in achieving accurate and precise markings.

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• 10.

### What is the value of “b” in the surface roughness symbol?

• A.

• B.

Sampling length

• C.

Production method

• D.

Direction of lay

C. Production method
Explanation
The value of "b" in the surface roughness symbol represents the production method. This means that it indicates the process or technique used to create the surface finish of a material. It can vary depending on factors such as the type of material, the desired finish, and the manufacturing capabilities. The production method can have a significant impact on the final surface roughness of a material, affecting its texture, appearance, and functional properties.

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• 11.

### What is the type of angle plate?

• A.

Plain

• B.

Box

• C.

Swivel

• D.

Slotted

B. Box
Explanation
The type of angle plate referred to in this question is a "Box" angle plate. Angle plates are used in machining operations to hold workpieces at a specific angle. A box angle plate is a type of angle plate that has a rectangular box-like shape, with two perpendicular surfaces that can be used for holding and clamping workpieces.

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• 12.

### What is the type of angle plate?

• A.

Plain

• B.

Slotted

• C.

Box

• D.

Swivel

A. Plain
Explanation
The type of angle plate referred to in the question is a plain angle plate. A plain angle plate is a flat metal plate with a right-angle shape, typically used in machining and tooling applications. It does not have any slots or holes, making it suitable for general purpose work where a flat surface is needed for setup or measurement purposes.

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• 13.

### What is the name of part marked as ‘x’?

• A.

Counter weight

• B.

Face plate

• C.

Work piece

• D.

Angle plate

D. Angle plate
Explanation
The part marked as 'x' is called an angle plate. An angle plate is a workholding device used in machining operations to hold workpieces at a right angle to the machining surface. It is typically made of cast iron and has precision-ground surfaces to ensure accurate positioning of the workpiece. Angle plates are commonly used in milling, drilling, and grinding operations to provide stability and support to the workpiece.

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• 14.

### What is lapping?

• A.

Precision finishing operation

• B.

Filing operation

• C.

Grinding operation

• D.

Chiseling operation

A. Precision finishing operation
Explanation
Lapping is a precision finishing operation that involves rubbing two surfaces together with an abrasive material in between. This process helps to achieve a high level of flatness, smoothness, and accuracy on the surfaces being worked on. It is commonly used in the manufacturing industry to improve the surface finish of parts, such as bearings, valves, and sealing surfaces. Lapping can remove small amounts of material and create a precise fit between two mating surfaces, ensuring optimal performance and functionality.

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• 15.

### How may roughness grade number are used?

• A.

N1 to N12

• B.

N1 to N25

• C.

N1 to N20

• D.

N1 to N30

A. N1 to N12
Explanation
The roughness grade numbers used range from N1 to N12.

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• 16.

### Which lapping material used for easy charging and rapid cutting?

• A.

Cast iron

• B.

Copper and brass

• C.

Close grained iron

• D.

White cast iron

A. Cast iron
Explanation
Cast iron is the correct answer because it is a lapping material that is known for its ability to hold and distribute abrasive particles evenly. It has a porous structure which allows for easy charging, meaning that it can absorb and retain the abrasive particles effectively. Additionally, cast iron is also known for its rapid cutting ability, making it an ideal choice for lapping applications where quick material removal is desired. Copper and brass, close grained iron, and white cast iron may also be used as lapping materials, but they do not possess the same characteristics of easy charging and rapid cutting as cast iron.

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• 17.

### What is the roughness grade number for symbol?

• A.

N7 to N9

• B.

N4 to N6

• C.

N1 to N3

• D.

N12

A. N7 to N9
Explanation
The roughness grade number for symbol is N7 to N9. This means that the surface roughness of the symbol falls within the range of N7 to N9, indicating a moderate level of roughness.

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• 18.

### What is the name of device marked as ‘X’?

• A.

Lathe plate

• B.

Four jaw chuck

• C.

Faceplate

• D.

Driving plate

B. Four jaw chuck
Explanation
The device marked as 'X' is a four jaw chuck. A four jaw chuck is a type of chuck used in machining operations to hold and secure a workpiece. It consists of four independently adjustable jaws that can be moved to grip the workpiece securely. This allows for precise and flexible clamping of various sizes and shapes of workpieces.

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• 19.

### Which grade of angle plate are more accuracy and used for tool room work?

• A.

• B.

• C.

• D.

Explanation
Grade 1 angle plates are more accurate and commonly used for tool room work. These angle plates are manufactured with high precision and have tighter tolerances compared to lower grade angle plates. They are designed to provide a reliable and stable reference surface for various machining operations in tool rooms. The high accuracy of Grade 1 angle plates ensures precise and consistent measurements, making them ideal for precision work where accuracy is crucial.

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• 20.

### Which lathe part is used to mount the dial indicator for truing the bore?

• A.

Tail stock

• B.

Cross side

• C.

Tool post

• D.

Lathe bed

C. Tool post
Explanation
The tool post is the correct answer because it is the part of the lathe that holds the cutting tool. In this case, it would also be used to mount the dial indicator for truing the bore. The tool post allows for precise positioning and adjustment of the tool, making it the suitable choice for mounting the dial indicator in order to accurately measure and correct any deviations in the bore.

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• 21.

### What is the operation?

• A.

Checking angles

• B.

Checking the squareness

• C.

Checking for height

• D.

Checking for parallelism

D. Checking for parallelism
Explanation
The operation being described in this question is checking for parallelism. This involves comparing the alignment of two or more lines or surfaces to determine if they are parallel to each other. It is a common measurement used in various fields such as engineering and construction to ensure proper alignment and accuracy in structures and components.

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• 22.

### How the cutting speed is expressed?

• A.

Foot/min

• B.

Meter/sec

• C.

Meter/min

• D.

Revoluation/min

C. Meter/min
Explanation
The cutting speed is expressed in meters per minute. This unit of measurement is commonly used in machining operations to indicate how fast the cutting tool is moving across the workpiece. By expressing the cutting speed in meters per minute, it allows for easy comparison and calculation of machining parameters such as feed rate and spindle speed.

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• 23.

### What is the length of the tool travelled in one revolution if the diamenter of work is ‘D’?

• A.

2 pi

• B.

Pi r 2

• C.

Pi x D

• D.

4 pi r 2

C. Pi x D
Explanation
The length of the tool traveled in one revolution is equal to the circumference of the circle formed by the tool. The formula for the circumference of a circle is given by 2πr, where r is the radius of the circle. In this case, the diameter of the circle is given as 'D', so the radius would be D/2. Therefore, the correct answer is pi x D, as it represents the circumference of the circle.

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• 24.

### What is the recommended cutting speed for turning mild steel using H.S.S tool?

• A.

25-40 m/min

• B.

35-70 m/min

• C.

40-70 m/min

• D.

35-50 m/min

D. 35-50 m/min
Explanation
The recommended cutting speed for turning mild steel using H.S.S tool is 35-50 m/min. This range ensures efficient cutting while minimizing tool wear and heat generation. Cutting speeds below 35 m/min may result in poor surface finish and increased tool wear, while speeds above 50 m/min may cause excessive heat and reduce tool life. Therefore, the optimal range for cutting mild steel with an H.S.S tool is 35-50 m/min.

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• 25.

### What is the term marked as ‘x’?

• A.

Diameter over roller at smaller end

• B.

Diameter over roller at bigger end

• C.

Height of slip gauge

• D.

Height of the job

B. Diameter over roller at bigger end
Explanation
The term marked as 'x' refers to the Diameter over roller at the bigger end.

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• Current Version
• Mar 19, 2023
Quiz Edited by
ProProfs Editorial Team
• May 12, 2021
Quiz Created by
Themes

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