Question 1

Material handling is usually associated with activities that occur inside a facility and not with transportation between facilities involving rail, truck, air, or waterway delivery of goods.

Accepted Answer

Material handling typically refers to the movement, protection, storage, and control of materials and products throughout manufacturing, warehousing, distribution, consumption, and disposal within a facility, rather than the transportation of goods between facilities which involves logistics and transportation services.

Question 2

A programmable logic controller (PLC) normally replaces which one of the following in control applications:&#10;A) computer numerical control &#10;B) distributed process control &#10;C) humans &#10;D) industrial robots   &#10;E) relay control panel

Accepted Answer

PLCs are designed to replace relay control panels in industrial settings. They offer more flexibility, programmability, and integration capabilities compared to traditional relay-based systems, making them more efficient for controlling machinery and processes.

Question 3

Which of the three methods of producing carbon nanotubes has the advantage that it can be operated continuously, which makes it attractive for mass production:&#10;A) carbon arc technique &#10;B) chemical vapor deposition   &#10;C) laser evaporation method

Accepted Answer

Chemical vapor deposition (CVD) is the method that can be operated continuously, making it attractive for mass production of carbon nanotubes. This process allows for the growth of carbon nanotubes on substrates at lower temperatures and can be scaled up more easily compared to the carbon arc technique and laser evaporation method.

Question 4

Dip-pen nanolithography uses which one of the following techniques and/or devices:&#10;A) atomic force microscope&#10;B) chemical vapor deposition&#10;C) electron beam lithography&#10;D) nano-imprint lithography  &#10;E) self-assembly

Accepted Answer

Dip-pen nanolithography utilizes an atomic force microscope (AFM) for the patterning of nanoscale structures. The AFM tip is coated with a chemical compound and then used to write on a substrate, allowing for precise control at the nanometer scale.

Question 5

Typical thickness of the copper layer in a printed circuit board is which one of the following:&#10;A) 4 mm (0.160 in) &#10;B) 0.4 mm (0.016 in) &#10;C) 0.04 mm (0.0016 in)  &#10;D) 0.004 mm (0.00016 in)

Accepted Answer

The typical thickness of the copper layer in a printed circuit board (PCB) is about 0.04 mm (0.0016 inches), which corresponds to the standard thickness of 1 ounce per square foot of copper foil used in many PCBs.

Question 6

Best clearances between surfaces in brazing are which one of the following ranges:&#10;A) 0.0025-0.025 mm (0.0001-0.001 in.) &#10;B) 0.025-0.250 mm (0.001-0.010 in.) &#10;C) 0.250-2.50 mm (0.010-0.100 in.)  &#10;D) 2.5-5.0 mm (0.10-0.20 in.)

Accepted Answer

The optimal clearance for brazing, which allows for the best capillary action of the brazing filler metal, is generally in the range of 0.025-0.250 mm (0.001-0.010 in.). This range ensures that the filler metal can effectively flow between the surfaces to be joined, creating a strong bond.

Question 7

Tempered glass is used for all but which one of the following products:&#10;A) all-glass doors &#10;B) automobile windshields &#10;C) safety glasses &#10;D) windows for tall buildings

Accepted Answer

Automobile windshields are made from laminated glass, not tempered glass, to prevent shattering upon impact and ensure safety by holding together even when broken.

Question 8

Which one of the following properties do not apply to metals:&#10;A) good thermal conductivity &#10;B) high strength &#10;C) high electrical resistivity &#10;D) high stiffness

Accepted Answer

Metals are known for their good electrical conductivity, not high electrical resistivity. High electrical resistivity is a characteristic more commonly associated with insulators rather than conductors like metals.

Question 9

Which one of the following metals has the lowest density:&#10;A) aluminum &#10;B) magnesium &#10;C) manganese &#10;D) tin &#10;E) titanium, &#10;F) zinc

Accepted Answer

Magnesium has the lowest density among the options given, making it a lightweight metal used in various applications where weight reduction is crucial.

Question 10

Properties and characteristics of glass-ceramics include which of the following (two best answers):&#10;A) efficiency in processing &#10;B) electrical conductor &#10;C) high thermal expansion  &#10;D) strong, relative to other glasses

Accepted Answer

Glass-ceramics are processed by a two-step process that involves forming a glass and then heat-treating it to crystallize a portion of the glass. This process results in a material that has the strength and durability of a ceramic, but the transparency and other optical properties of a glass. Glass-ceramics are also good electrical insulators and have a low thermal expansion coefficient.

Question 11

Which one of the following metals has the lowest density:&#10;A) aluminum &#10;B) copper &#10;C) iron &#10;D) magnesium &#10;E) tin

Accepted Answer

The answer of Which one of the following metals has...

Deck 1: Modern Manufacturing