What is the disadvantage of ammonia using as a refrigerant? The major disadvantage of ammonia as a refrigerant is its toxicity. Due to ammonia’s hygroscopic nature, it migrates to moist areas of the body, including the eyes, nose, throat and moist skin and may cause severe burn injuries. What is the advantage of ammonia using […]
Why is measurement important in welding?
Why is measurement important in welding? Several welding projects require you to understand, calculate and measure welds at different angles accurately. Moderate knowledge of geometrical measurements will make it easier for you to connect metals together while advanced knowledge will make it possible to work on complex projects. Which of the following is the most […]
Why counter flow heat exchanger is more efficient?
Why counter flow heat exchanger is more efficient? Counter flow heat exchangers are inherently more efficient than parallel flow heat exchangers because they create a more uniform temperature difference between the fluids, over the entire length of the fluid path. For example, one fluid may make 2 passes, the other 4 passes. How does a […]
What is the divide and conquer approach to problem solving?
What is the divide and conquer approach to problem solving? A divide-and-conquer algorithm recursively breaks down a problem into two or more sub-problems of the same or related type, until these become simple enough to be solved directly. The solutions to the sub-problems are then combined to give a solution to the original problem. How […]
What can affect gas mileage?
What can affect gas mileage? How Your Driving Affects Fuel Economy Excessive Short Trips. Your engine works at its most efficient after it warms up. Frequent Cold Weather Travel. Heavy Braking or Acceleration. High Vehicle Weight or Towing Weight. Speeding. Fuel Injector Problems. Oil Type. Poor Maintenance. Why does gas mileage drop with new tires? […]
How is ethylene oxide formed?
How is ethylene oxide formed? Ethylene oxide can be produced by reacting oxygen (O2) and ethylene (C2H4) at temperatures of 200 – 300°C and pressures of 10 – 20 bara. The typical yield of this reaction is up to 80 – 90%. Is Ethylene Oxide an oxidizer? Historically, the most commonly used type of equipment […]
Which individual is a producer a host who seats?
What is the operating principle of LED?
What is the operating principle of LED? Working Principle: A light-emitting diode is a two-lead semiconductor light source. It is a p–n junction diode that emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of […]
What are 2 ways energy can be transferred?
What are 2 ways energy can be transferred? The two ways that energy can be transferred are by doing work and by heat transfer. How is thermal energy transferred within a system? Generally, when thermal energy is transferred to a material, the motion of its particles speeds up and its temperature increases. There are three […]
How many methods of coal analysis are there?
How many methods of coal analysis are there? two methods How do you know the grade of coal? The most common classification is based on rank, referring to the degree of coalification that has occurred. The rank of a coal is determined primarily by the depth of burial and temperature to which the coal was […]