What is stress relaxation in polymers? In materials science, stress relaxation is the observed decrease in stress in response to strain generated in the structure. Stress relaxation describes how polymers relieve stress under constant strain. Because they are viscoelastic, polymers behave in a nonlinear, non-Hookean fashion. What is relaxation time in polymers? Viscoelastic models of […]
What is diametral pitch in spur gear?
What is diametral pitch in spur gear? The Diametral Pitch (DP) is the number of teeth per inch of diameter of the pitch circle. The units of DP are inverse inches (1/in). The Diametral Pitch (DP) is equal to π divided by the Circular Pitch (CP). How do you calculate diametral pitch? Diametral Pitch is […]
How did interchangeable parts improve manufacturing?
How did interchangeable parts improve manufacturing? Interchangeable parts, popularized in America when Eli Whitney used them to assemble muskets in the first years of the 19th century, allowed relatively unskilled workers to produce large numbers of weapons quickly and at lower cost, and made repair and replacement of parts infinitely easier. Where were interchangeable parts […]
What is transactional vs transformational leadership?
What is transactional vs transformational leadership? Transactional leadership is primarily based on processes and control, and requires a strict management structure. Transformational leadership, on the other hand, focuses on inspiring others to follow, and it requires a high degree of coordination, communication and cooperation. Why is transformational leadership more effective than transactional? A transformational leadership […]
What are the stages of widowhood?
What are the stages of widowhood? Kathleen Rehl, herself a widow and former financial advisor, has outlined the three stages of widowhood in her book “Moving Forward on Your Own,” as grief, growth, and grace. Through her professional experience, she also covers in her book how a financial advisor can help widows through each stage. […]
What is Solar Pond?
What is Solar Pond? A solar pond is a pool of saltwater which collects and stores solar thermal energy. The saltwater naturally forms a vertical salinity gradient also known as a “halocline”, in which low-salinity water floats on top of high-salinity water. What is Solar Pond explain with diagram? A solar pond is a solar […]
Is the sample mean always equal to one of the values in the sample?
What is the most effective method to protect against a fall hazard?
What is the most effective method to protect against a fall hazard? include use of stairs, guardrails, and barriers to prevent the employee from direct and unprotected exposure to the fall hazard. These techniques prevent the fall before the onset. Control of falls is the last line of defense. How can hazards be prevented from […]
What causes high BOD in wastewater effluent?
What causes high BOD in wastewater effluent? Hydrolysis converts particulate organic matter to soluble and easily degradable organic acids which is why you measure an increase in BOD. What is the limit of BOD on discharge of wastewater on the surface water? 350 mg/L In which way sewage can be treated? Four common ways to […]
What does a bimetallic strip consists of?
What does a bimetallic strip consists of? A bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals, which expand at different rates as they are heated. How does a bimetallic strip measure temperature? When heated, the metal strip deforms due to the different […]