What is vertical farming? Vertical farming is the practice of growing crops in vertically stacked layers. It often incorporates controlled-environment agriculture, which aims to optimize plant growth, and soilless farming techniques such as hydroponics, aquaponics, and aeroponics. What are the benefits of vertical farming? Advantages and Disadvantages of Vertical Farming It offers a plan to […]
What is sheet metal shearing operation?
What is sheet metal shearing operation? Shearing Operation Shearing is the process of separating the sheet metal into two or more pieces, normally by cutting along a line. Commonly used to cut into rectangular shapes but can produce other shaped parts. Which of the following is used for cutting a sheet metal along a straight […]
What is the maximum air leakage rate in a straight truck with the engine off and the brakes off?
What is the maximum air leakage rate in a straight truck with the engine off and the brakes off? Quote From The CDL Manual: Test air leakage rate: With a fully-charged air system (typically 125 psi), turn off the engine, release the service brake, and time the air pressure drop. The loss rate should be […]
What are the properties of discrete-time signals?
What are the properties of discrete-time signals? For discrete-time signals, we obtain definitions for energy and power similar to those for continuous-time signals by replacing integrals by summations. x[n] is said to have finite energy or to be square summable if εx < ∞. x[n] is said to have finite power if Px < ∞. […]
What do you mean by capillarity or capillary action?
What do you mean by capillarity or capillary action? Capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity. It occurs because of intermolecular forces between the liquid and surrounding solid […]
What is the pressure ratio of a gas turbine?
What is the pressure ratio of a gas turbine? In aeronautical engineering, overall pressure ratio, or overall compression ratio, is the ratio of the stagnation pressure as measured at the front and rear of the compressor of a gas turbine engine. The terms compression ratio and pressure ratio are used interchangeably. What is back work […]
What are the disadvantages of composite materials?
What are the disadvantages of composite materials? Disadvantages of composites include high raw material costs and usually high fabrication and assembly costs, poor strength in the out-of plane direction where the matrix carries the primary load, susceptibility to impact damage, and greater difficulty in repairing them compared to metallic structures. Why are composites so strong? […]
What is mass production in the industrial revolution?
What is mass production in the industrial revolution? Mass production is the production of machinery and other articles in standard sizes in large numbers. Mass production makes it possible to manufacture things faster, and often at less cost. It also means that a replacement can be obtained for any part of a manufacturing machine or […]
What happens if the refrigerant is recovered improperly from a water-cooled condenser?
What happens if the refrigerant is recovered improperly from a water-cooled condenser? What can happen to a water-cooled condenser if the refrigerant is recovered improperly? Low refrigerant pressure and temperature can drop below freezing, freeze the water in the condenser, and damage the condenser. What’s the purpose of the condenser in a refrigeration system? The […]
What are the stages of a rocket launch?
What are the stages of a rocket launch? Stages of a Rocket Launch Primary Stage. The primary stage of a rocket is the first rocket engine to engage, providing the initial thrust to send the rocket skyward. Secondary Stage. After the primary stage has fallen away, the next rocket engine engages to continue the rocket […]