WorksheetsQUIZ ACTIVITY - MODULE 4 & 5 _ IME_BESCK204D_B SECTION
Total questions: 20
Worksheet time: 40mins
Aerospace engineers need to design a lightweight aircraft wing that retains high strength and fatigue resistance. Which material would be most suitable and why?
Steel-reinforced polymer
Carbon fiber reinforced polymer (CFRP)
Aluminum alloy
Glass fiber reinforced epoxy
Shape memory alloys (SMAs) are preferred for medical stents primarily because:
They are magnetic and easily detectable
They resist corrosion better than all other materials
They can expand and return to shape at body temperature
They are cheaper than stainless steel
You are asked to identify a ferrous material with 0.4% carbon content. What classification does it fall under?
Cast iron
Low carbon steel
Medium carbon steel
High carbon steel
An automotive company wants to reduce vehicle weight without compromising structural strength. Which composite would you recommend to replace steel in the chassis?
Wood-fiber composite
Carbon fiber reinforced plastic
Epoxy resin
Stainless steel composite
To join copper pipes for plumbing with minimal heat distortion and good mechanical strength, which method is best?
Electric arc welding
Soldering with tin-lead alloy
Brazing using brass (spelter)
Gas metal arc welding (GMAW)
In assembling electronic circuits, why is soldering more preferred over brazing?
It requires higher temperature
It offers stronger joints
It is suitable for delicate components
It avoids use of flux
A welder is tasked with joining a metal that is highly sensitive to oxidation, such as aluminum. Which type of gas flame should be used during welding, and what is the reasoning behind its selection?
Neutral flame – to maintain balance between oxygen and acetylene
Oxidizing flame – to provide extra heat for faster welding
Reducing (Carburizing) flame – to prevent oxidation of the metal
Blue flame – to reduce thermal expansion
An aerospace engineer must select a material that can endure high thermal loads while maintaining structural strength. Which type of composite material is most suitable, and why?
Polymer Matrix Composite (PMC) – due to low density
Metal Matrix Composite (MMC) – for high thermal resistance and strength
Ceramic Matrix Composite (CMC) – for high corrosion resistance
Natural Fiber Composite – for eco-friendliness
A material is made by embedding carbon fibers into a plastic resin matrix. How is this composite classified?
Metal Matrix Composite (MMC)
Ceramic Matrix Composite (CMC)
Polymer Matrix Composite (PMC)
Natural Fiber Composite
An engineer is tasked with welding thick steel sections at a construction site. Why would electric arc welding be a preferred choice over gas welding?
It is less expensive and does not need shielding
It provides deeper penetration and higher heat input
It requires no electrode or filler metal
It can only be used in laboratory environments
The Coca-Cola company bottles are automatically filled, capped, and labelled continuously.
Which type of automation is best suited for this application, and why?
Fixed Automation – for high-volume, repetitive tasks
Flexible Automation – for frequent product changeovers
Programmable Automation – for batch processing
Manual Processing – for maximum control
A food processing company produces a single product in bulk but plans to add a new product line in the future.
Which type of automation would you recommend and why?
Fixed Automation – for consistent output
Programmable Automation – for future change adaptability
Manual Operation – to reduce cost
Flexible Automation – for variety and quick changeover
A bakery needs to switch frequently between different shapes of cookies and cakes on its production line.
Which type of automation would best suit this operation and why?
Fixed Automation – for uniform shapes
Flexible Automation – for frequent shape changeover
Programmable Logic – for mass production
Semi-Automation – to retain worker involvement
Suggest suitable robot configurations that provide linear movement along the x, y, and z axes.
Which robot is best suited and why?
SCARA Robot – for rotational movement
Articulated Robot – for 3D flexibility
Cartesian Robot – for precise linear motion
Cylindrical Robot – for radial paths
Suggest suitable robot configurations used for material handling and loading/unloading operations in a hemispherical workspace.
Which robot fits the application and why?
Polar Robot – for spherical reach
Cartesian Robot – for straight motion
SCARA Robot – for planar workspace
Cylindrical Robot – for circular reach
A robotic arm is used in a car assembly line for welding parts.
How do the joints and links in the robotic arm determine its range of motion and efficiency?
Linear joints limit motion but add rigidity
Revolute joints allow curved paths for complex welding tasks
Fixed joints reduce flexibility
Prismatic joints are only used in horizontal axes
A logistics company is implementing an automated sorting system.
How should they balance cost, scalability, and operational disruption?
Choose a fixed system to minimize cost
Adopt modular automation for future scalability
Outsource the process
Avoid new technology
You are designing a robotic manipulator for an assembly task.
How would you select the type of joints to optimize both precision and reach?
Use only prismatic joints for accuracy
Combine revolute and prismatic joints for optimal performance
Use rigid links only
Avoid flexible joints to reduce error
A warehouse automation system requires robots to stack heavy loads in vertical racks.
Which robot configuration is most suitable and why?
SCARA Robot – for horizontal assembly
Cartesian Robot – for vertical stacking with precision
Cylindrical Robot – for compact tasks
Polar Configuration
Apply your knowledge and suggest a suitable automation to perform the following task:
Filling and sealing packets of food grains in a continuous production line.
Which type of automation would be most appropriate and why?
Fixed Automation – for repetitive, uninterrupted packaging
Flexible Automation – for varied packaging shapes
Manual Filling – for product quality
CNC Control – for precision cutting only
