Home/ Jemshah/Best Answers
  1. Asked: December 18, 2022In:

    explain the following methods of joining metals. i. reverting; ii. bolting

    Jemshah Enlightened

    i. Reverting is a method of joining metals in which the two parts are heated until they are molten, and then they are allowed to cool and solidify together. Reverting is typically used to join metals that have a low melting point, such as lead or tin, and it is often used in the construction of elecRead more

    i. Reverting is a method of joining metals in which the two parts are heated until they are molten, and then they are allowed to cool and solidify together. Reverting is typically used to join metals that have a low melting point, such as lead or tin, and it is often used in the construction of electrical components and other small parts.

    ii. Bolting is a method of joining metals in which two or more parts are permanently joined together by the use of a bolt, a nut, and a washer. A bolt is a long, cylindrical rod with a thread at one end and a head at the other end. To join the parts using bolting, the bolt is inserted through a hole in one of the parts and the nut is tightened on the other side, using a wrench or a torque tool. The washer is placed between the parts to distribute the clamping force and to prevent damage to the parts. Bolting is a strong and reliable method of joining metal parts, and it is often used in the construction of machinery and other equipment where high strength and reliability are required.

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  2. Asked: December 18, 2022In:

    list three i. marking out tools, ii. cutting tools

    Jemshah Enlightened

    i. Marking out tools are tools that are used to mark or scribe lines on a workpiece, in order to guide the placement or alignment of other tools or processes. Some common marking out tools include: Pencil: A pencil is used to draw lines on a workpiece, and it is often used for rough or preliminary lRead more

    i. Marking out tools are tools that are used to mark or scribe lines on a workpiece, in order to guide the placement or alignment of other tools or processes. Some common marking out tools include:

    • Pencil: A pencil is used to draw lines on a workpiece, and it is often used for rough or preliminary layouts.
    • Scriber: A scriber is a thin, pointed tool that is used to mark lines on a workpiece, and it is often used for more precise layouts.
    • Divider: A divider is a pair of pointed legs that are used to measure and mark off distances on a workpiece, and it is often used for setting out circles or arcs.
    • Compass: A compass is a tool with a pointed leg and a pivot point, and it is used to draw circles or arcs on a workpiece.

    ii. Cutting tools are tools that are used to cut or remove material from a workpiece, in order to shape or size it. Some common cutting tools include:

    • Hacksaw: A hacksaw is a hand-held saw with a thin blade that is used to cut through metal or other materials.
    • Chisels: Chisels are hand-held tools with a sharp, pointed end that is used to cut or shape wood or other materials.
    • Drills: Drills are power tools that are used to make holes in a workpiece, using a rotating drill bit.
    • Milling cutters: Milling cutters are rotating cutting tools that are used to remove material from a workpiece, using a milling machine.
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  3. Asked: December 18, 2022In:

    describe the following metal finishes and decorative processes. i. pickling, ii. annealing.

    Jemshah Enlightened

    . Pickling is a metal finishing process that involves the use of an acid solution to remove impurities, such as rust, scale, or oxides, from the surface of a metal. The metal is typically soaked in the acid solution for a period of time, and then rinsed and dried to remove any residue. Pickling is oRead more

    . Pickling is a metal finishing process that involves the use of an acid solution to remove impurities, such as rust, scale, or oxides, from the surface of a metal. The metal is typically soaked in the acid solution for a period of time, and then rinsed and dried to remove any residue. Pickling is often used to prepare the surface of a metal for further processing, such as welding or painting, and it is commonly used on steel and other ferrous metals.

    ii. Annealing is a metal finishing process that involves heating a metal to a high temperature and then cooling it slowly in order to soften and improve its ductility. Annealing is typically used on metals that have become hard or brittle due to cold working or other processes, and it is often used to improve the formability or machinability of a metal. Annealing is commonly used on steel and other ferrous metals, as well as on some non-ferrous metals, such as copper and aluminum.

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  4. Asked: December 18, 2022In:

    list three contents of a first aid kit.

    Jemshah Enlightened

    Adhesive bandages: Adhesive bandages are used to cover and protect cuts and scrapes, and to keep them clean and free of germs. Gauze pads: Gauze pads are used to cover and protect wounds, and to absorb blood and other fluids. Adhesive tape: Adhesive tape is used to hold gauze pads or other dressingsRead more

    1. Adhesive bandages: Adhesive bandages are used to cover and protect cuts and scrapes, and to keep them clean and free of germs.
    2. Gauze pads: Gauze pads are used to cover and protect wounds, and to absorb blood and other fluids.
    3. Adhesive tape: Adhesive tape is used to hold gauze pads or other dressings in place, and to provide support or immobilization to injured body parts.
    4. Scissors: Scissors are used to cut bandages, tape, and other materials, and to remove clothing or other obstructions that may be blocking access to an injury.
    5. Tweezers: Tweezers are used to remove splinters or other small foreign objects from the skin.
    6. Antiseptic wipes: Antiseptic wipes are used to clean and disinfect wounds, and to remove dirt and debris.
    7. Antibiotic ointment: Antibiotic ointment is used to prevent infection and promote healing in cuts and scrapes.
    8. Pain medication: Pain medication, such as acetaminophen or ibuprofen, is used to relieve pain and discomfort.
    9. Burn cream: Burn cream is used to soothe and protect burns, and to prevent infection.
    10. Instant cold pack: An instant cold pack is used to reduce swelling and inflammation, and to provide relief from pain and discomfort.
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  5. Asked: December 18, 2022In:

    procedure of extinguishing flames that the have engulfed a person

    Jemshah Enlightened

    Assess the situation: The first step is to assess the severity of the situation and determine if it is safe to approach the person. If the flames are small and the person is able to move, they should be encouraged to move away from the source of the flames and seek help. If the flames are large or tRead more

    1. Assess the situation: The first step is to assess the severity of the situation and determine if it is safe to approach the person. If the flames are small and the person is able to move, they should be encouraged to move away from the source of the flames and seek help. If the flames are large or the person is unable to move, they may require immediate assistance to extinguish the flames.
    2. Call for help: If the flames are large or the person is unable to move, it is important to call for help as soon as possible. This may include calling emergency services, such as the fire department or the police, or alerting others who can assist with the extinguishment.
    3. Remove the source of the flames: If possible, the source of the flames should be removed or extinguished to stop the fire from spreading. This may involve turning off a gas stove, unplugging an electrical appliance, or extinguishing a burning candle or lighter.
    4. Extinguish the flames: The flames should be extinguished as quickly as possible to prevent further injury to the person. This can be done using a fire extinguisher, a bucket of water, a blanket, or other materials that are available. It is important to cover the entire body of the person to ensure that all of the flames are extinguished.
    5. Seek medical attention: After the flames have been extinguished, it is important to seek medical attention for the person as soon as possible. They may have suffered burns or other injuries that require treatment.
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  6. Asked: December 18, 2022In:

    machines used in sheet metal fabrication

    Jemshah Enlightened

    Shearing machine: A shearing machine is used to cut sheet metal into precise shapes and sizes, using a blade that moves back and forth along a fixed path. Punching machine: A punching machine is used to punch holes or shapes in sheet metal, using a punch and a die. Bending machine: A bending machineRead more

    1. Shearing machine: A shearing machine is used to cut sheet metal into precise shapes and sizes, using a blade that moves back and forth along a fixed path.
    2. Punching machine: A punching machine is used to punch holes or shapes in sheet metal, using a punch and a die.
    3. Bending machine: A bending machine is used to bend sheet metal into various shapes, using a set of rollers or a press brake.
    4. Rolling machine: A rolling machine is used to roll sheet metal into cylinders or other curved shapes, using a set of rollers that apply pressure to the metal.
    5. Welding machine: A welding machine is used to join sheet metal parts together by melting and fusing the metal at the joint.
    6. Grinding machine: A grinding machine is used to remove excess material or to smooth and finish the surface of sheet metal parts, using an abrasive wheel or belt.
    7. Laser cutting machine: A laser cutting machine is used to cut sheet metal into precise shapes and sizes, using a laser beam to vaporize the metal.
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  7. Asked: December 18, 2022In:

    safety precautions observed when cutting a work piece using a hacksaw blade

    Jemshah Enlightened

    Wear protective equipment: It is important to wear appropriate protective equipment, such as safety glasses, gloves, and a protective apron, to protect against injuries from flying chips or debris, as well as from contact with the blade or the workpiece. Secure the workpiece: The workpiece should beRead more

    1. Wear protective equipment: It is important to wear appropriate protective equipment, such as safety glasses, gloves, and a protective apron, to protect against injuries from flying chips or debris, as well as from contact with the blade or the workpiece.
    2. Secure the workpiece: The workpiece should be securely clamped or held in place to prevent it from moving or shifting during the cutting process. This will help to ensure a straight and accurate cut, and will also help to prevent accidents or injuries.
    3. Check the blade: The hacksaw blade should be checked for damage or defects before use, and any damaged or defective blades should be replaced. The blade should also be tightened securely in the frame to prevent it from slipping or coming loose during the cutting process.
    4. Use proper technique: When cutting the workpiece, it is important to use proper technique, such as applying even and steady pressure and making smooth and continuous cuts. This will help to prevent the blade from binding or breaking, and will also help to ensure a clean and accurate cut.
    5. Keep your hands and fingers away from the blade: It is important to keep your hands and fingers away from the blade at all times, as the blade can cause serious injuries if it comes into contact with your skin.
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  8. Asked: December 18, 2022In:

    state three; i. categories of fits; ii. functions of a steel rule.

    Jemshah Enlightened

    . There are three main categories of fits in mechanical engineering: clearance fits, transition fits, and interference fits. Clearance fits: Clearance fits are designed to allow a certain amount of clearance or space between the two parts that are being fitted together. This type of fit is used whenRead more

    . There are three main categories of fits in mechanical engineering: clearance fits, transition fits, and interference fits.

    • Clearance fits: Clearance fits are designed to allow a certain amount of clearance or space between the two parts that are being fitted together. This type of fit is used when it is important to allow for movement or relative motion between the parts, or when the parts may be subject to thermal expansion or contraction.
    • Transition fits: Transition fits are designed to allow for a small amount of interference or overlap between the two parts being fitted together. This type of fit is used when it is important to maintain a secure connection between the parts, but some movement or relative motion is still desired.
    • Interference fits: Interference fits are designed to create a press fit or a tight fit between the two parts being fitted together. This type of fit is used when it is important to maintain a high level of stability and rigidity between the parts, and when minimal movement or relative motion is desired.

    ii. The functions of a steel rule include:

    • Measuring: A steel rule is used to measure the dimensions of objects or materials, either in inches or in millimeters. It is commonly used to measure the width, length, or thickness of parts or products, and to check for dimensional accuracy or conformity to specified tolerances.
    • Marking: A steel rule can also be used to mark lines or dimensions on materials or surfaces, either by hand or with the aid of a scribe or other marking tool.
    • Straight edge: A steel rule can be used as a straight edge to check for straightness or flatness, or to guide the cutting or machining of materials.
    • Scaling: A steel rule can be used to scale drawings or plans, either by measuring and transferring dimensions directly or by using a scale factor.
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  9. Asked: December 18, 2022In:

    define the term ‘tolerance’ with reference to workshop measurements.

    Jemshah Enlightened
    This answer was edited.

    tolerance refers to the allowable deviation from a specified dimension or standard. Tolerances are used to specify the acceptable range of variation in the dimensions of a part or product, and they are typically defined in terms of a maximum and minimum limit.  

    tolerance refers to the allowable deviation from a specified dimension or standard. Tolerances are used to specify the acceptable range of variation in the dimensions of a part or product, and they are typically defined in terms of a maximum and minimum limit.

     

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  10. Asked: December 18, 2022In:

    obligations on an employer at a work place a stipulated in the safety and health Act

    Jemshah Enlightened

    Risk assessment: Employers are required to assess the risks to the safety and health of their employees, including the risks posed by the work environment, the equipment and machinery used, and the substances and materials handled. Based on this assessment, employers must implement appropriate measuRead more

    1. Risk assessment: Employers are required to assess the risks to the safety and health of their employees, including the risks posed by the work environment, the equipment and machinery used, and the substances and materials handled. Based on this assessment, employers must implement appropriate measures to control and mitigate these risks.
    2. Safe systems of work: Employers must establish and maintain safe systems of work, including procedures, policies, and practices, to ensure the safety and health of their employees. This may include the provision of personal protective equipment, training and instruction, and emergency procedures.
    3. Maintenance of machinery and equipment: Employers must ensure that all machinery and equipment used in the workplace is regularly maintained and kept in good working order, and that any defects are promptly repaired.
    4. Reporting of accidents and incidents: Employers must report any accidents or incidents that occur at the workplace to the appropriate authorities and keep records of these incidents.
    5. Health and safety training: Employers must provide adequate training and instruction to their employees on health and safety matters, including the risks associated with their work and the measures in place to control and mitigate these risks.
    6. Cooperation with safety and health authorities: Employers must cooperate with safety and health authorities, including by providing access to the workplace and relevant information, and by complying with any orders or instructions issued by these authorities.
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