What is the purpose of recessing the cap-head of a bolt?

To provide a flush surface for safety and easy cleaning

To reduce the cost of production

To increase the bolt's diameter

What does the metric bolt specification include?

Diameter, pitch, and length of a bolt

What is the purpose of the pitch of a screw thread?

To determine the distance between adjacent peaks or troughs

To measure the length of the screw

To identify the type of material used

To calculate the weight of the screw

Why are metric bolts usually slightly smaller than their specified diameter?

To allow some flexibility for parts that might be misaligned

To increase the strength of the bolt

How does the diameter of a bolt affect its strength?

The strength increases with increasing diameter

The strength decreases with increasing diameter

The strength is not affected by the diameter

The strength varies randomly with diameter

What does the pitch of a bolt refer to?

The distance between two adjacent threads

Why is a lower torque generally required when screwing a fine pitch bolt into a soft metal block?

To increase the speed of installation

To prevent the bolt from breaking

To reduce the cost of materials

What should be consulted to determine the maximum value of torque that should be applied to fine pitch nuts and bolts?

The manufacturer's documentation

What is the proof strength of a component?

The maximum load a component can handle before it permanently deforms.

The initial stress a component can handle before it is used.

The stress a component can endure for a short period.

The stress level at which a component returns to its original shape after being stretched.

What is the main purpose of assembling engineered products?

To put together a number of individual components to build a whole device

To test the strength of materials

What must be considered when planning the sequence of assembly?

That each component's position allows for accessibility of its fastenings

The weight of the final product

The temperature at which components operate

Why is it important that joints in an assembly are accessible for maintenance?

To allow for small adjustments or replacements of parts

To make the product look better

To reduce the cost of production

What should be taken into consideration when selecting materials for joining components?

Whether the materials are heat sensitive or flammable

The popularity of the materials

The color compatibility of the materials

What is the purpose of using tolerances in assembly techniques?

To ensure precision and proper fit of components

To protect parts from corrosion

What is a permanent joint in engineering assemblies(for example riveted joint)?

A joint where the joining medium must be destroyed to dismantle

A joint that allows for easy dismantling and reassembly

A joint that uses flexible materials

A joint that protects parts from corrosion

What is the purpose of using a cap head socket screw in assemblies?

To provide a flush surface by recessing the head into a counterbore

To allow easy movement between components

To increase the electrical conductivity

To visually enhance the assembly

Why is it important to use flat and right-angled seatings for bolted and screwed fastenings?

To prevent the bolt or screw from being bent

To make the assembly look better

To reduce the cost of production

To increase the speed of assembly

What is the purpose of using a soft washer between the seating and the nut in engineering techniques?

To increase the pressure on the nut

To reduce the weight of the assembly

What must be considered when designing a riveted joint to ensure it is strong enough?

The material and shape of the rivet

The temperature of the environment

What happens if the rivet used in a joint is too short?

The head cannot be properly formed

It will increase the speed of assembly

What is the purpose of using a drawing-up tool when closing a rivet?

To ensure close contact between components

What is a common use for 'pop' riveting?

Joining thin sheet metal components

Testing the strength of the rivet

What is the main advantage of welded joints over riveted joints in structures like ships and bridges?

Welded joints transmit stresses across the joint uniformly

Riveted joints are easier to inspect

What should you do before dismantling a portable electric fan heater for examination?

Make sure it is disconnected from AC supply

Ensure it is connected to a power source

What is the purpose of using a flux in arc welding?

To protect the weld from atmospheric oxygen

To increase the heat of the weld

Why is the heated area of the weld called the weld zone?

Because it is where the heat affects the metal properties

Because it is the coolest part of the weld

Because it is where the metal becomes brittle

Because it is the least important part of the weld

What is a key difference between oxy-acetylene welding and arc welding regarding the use of a filler rod?

In arc welding, the electrode is also the filler rod.

In oxy-acetylene welding, no filler rod is used.

In oxy-acetylene welding, the filler rod is optional.

In arc welding, a separate filler rod is never used.

What is the main difference between welding and soldering according to the text?

Soldering uses a parent metal that is not melted, while welding melts the parent metal.

Welding uses a filler metal that is not melted, while soldering melts the filler metal.

Welding is used mainly for electrical connections, while soldering is not.

Soldering is used mainly for joining wood, while welding is used for metals.

What is the purpose of using tin in the solder during the soldering process?

To chemically react with the surface of the metal to form a bond

To increase the melting point of the solder

To make the solder less effective

To color the solder for identification

Why should the work be supported on wood during soldering?

To improve electrical conductivity

What is the key difference between soldering and brazing according to the temperature required to melt the filler metal?

C) Soldering requires a temperature below 450°C

A) Brazing requires a temperature below 450°C

B) Soldering requires a temperature above 450°C

D) Brazing requires a temperature above 450°C

What is the main advantage of using adhesives for joining materials compared to welding?

Adhesives can join similar and dissimilar materials without affecting their properties.

Adhesives increase the temperature of materials significantly.

Adhesives are electrical conductors.

Adhesives require the materials to be dirty and oily.

What is the role of adhesives in preventing corrosion?

They reduce or prevent electrolytic corrosion when dissimilar metals are joined.

They increase corrosion when joining dissimilar metals.

They have no effect on corrosion.

They enhance the electrical conductivity between different metals.

Chapter6: Engineering tool_part2

Authored by iman khatami

Physics

3rd Grade

Used 18+ times

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51 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of countersinking in mechanical work?

To create a decorative pattern

To allow the head of a rivet or screw to sit flush with or below the surface of the material

To make the material lighter

To increase the material's strength

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are centre drills unsuitable for countersinking?

They create too large a hole

They have a 90-degree angle

They have a 60-degree angle

They are too expensive

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the difference between a countersink and a counterbore?

A counterbore is used for lighter materials

A countersink creates a conical hole, while a counterbore creates a cylindrical hole

A countersink is only used on metal surfaces

A counterbore is less precise

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of spot-facing?

To create a deep hole in the material

To make the surface rough

To provide a flat surface for a nut or washer to seat on

To connect two pieces of material

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the most common type of accident resulting from the use of an unguarded drilling machine?

Electrical shock

Fire hazard

Machine malfunction

Injury

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of screw threads are stronger and less likely to work loose in soft metals like aluminium?

Coarse threads

Fine threads

Both A and B

Neither A nor B

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary reason for using a hexagon head on a bolt?

To increase the weight of the bolt

To provide a flush surface for safety

To make it look more appealing

To allow for ease of tightening and application strength

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Chapter6: Engineering tool_part2

What is the purpose of countersinking in mechanical work?

Why are centre drills unsuitable for countersinking?

What is the difference between a countersink and a counterbore?

What is the function of spot-facing?

What is the most common type of accident resulting from the use of an unguarded drilling machine?

Which type of screw threads are stronger and less likely to work loose in soft metals like aluminium?

What is the primary reason for using a hexagon head on a bolt?

Which type of bolt is commonly used in the manufacture of machine tools, jigs, and fixtures?

What is the purpose of recessing the cap-head of a bolt?

What does the metric bolt specification include?

Access all questions and much more by creating a free account

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