Category: Engineering

What are the slip systems in BCC? Some bcc materials (e.g. α-Fe) can contain up to 48 slip systems. There are six slip planes of type {110}, each with two <111> directions (12 systems). There are 24 {123} and 12 {112} planes each with one <111> direction (36 systems, for a total of 48). What […]

Where would you find the cat rating on an instrument? The CAT (Category) rating of a test instrument defines where in the electrical supply chain the instrument can be safely used. This is usually printed on the instrument across the test connections and appears as CAT II, CAT III or CAT IV. What is a […]

What do the rungs on a ladder diagram represent? Horizontal lines in a ladder diagram are called “rungs,” each one representing a unique parallel circuit branch between the poles of the power supply. Typically, wires in control systems are marked with numbers and/or letters for identification. How are the rungs of a ladder diagram numbered? […]

How do you measure elongation in a tensile test? Elongation = ɛ = (ΔL/L) x 100 It is measured in % (% of elongation vs. initial size when yield point is reached). Elongation at Yield is also known as tensile elongation at yield. How do you test the tensile strength of a material? The basic […]

What is the sand at White Sands National Monument made of? gypsum What type of ecosystem is White Sands? desert What is white sands known for? Rising from the heart of the Tularosa Basin is one of the world’s great natural wonders – the glistening white sands of New Mexico. Great wave-like dunes of gypsum […]

What is the minimum size service permitted by the code? 100 amperes How do you calculate service size? Minimum service size can be found by adding up the total wattage that will be used, counting the first 10 kW at 100%, and using a 40% demand factor on all the rest. Once the calculated demand […]

Why Ford trucks are better than Chevy? Fuel economy Though Ford’s V6 options still offer plenty of power, they are more efficient than the engine options offers in the Chevy truck lineup. According to US News, Ford truck fuel averaged out at 22 mpg while the Chevrolet truck’s came to 21.5 mpg. Even the heavy-duty […]

How do you say thank you for help and support? Use these phrases to let someone know how much you appreciate what they have done for you: I am grateful for your support. I appreciate you. I appreciate your taking the time. I value the insights and guidance you provide. I wanted to thank you […]

Why the value of the COP of the refrigeration system is always greater than 1? The COP usually exceeds 1, especially in heat pumps, because, instead of just converting work to heat (which, if 100% efficient, would be a COP of 1), it pumps additional heat from a heat source to where the heat is […]

What causes chatter in machining? One of the most common causes is chatter created by vibration in the CNC machine tool cutting process. In addition, vibration can cause uneven tool wear, resulting in poor surface finish, geometry inconsistencies and reduced tool life. Chatter is caused by the inherent natural frequency of the cutting tool. What […]