What does it mean when a flow is fully developed? Fully developed flow implies that the velocity profile does not change in the fluid flow direction hence the momentum also does not change in the flow direction. In such a case, the pressure in the flow direction will balance the shear stress near the wall. […]
When an industry is a natural monopoly What can we expect?
When an industry is a natural monopoly What can we expect? Definition: A natural monopoly occurs when the most efficient number of firms in the industry is one. A natural monopoly will typically have very high fixed costs meaning that it is impractical to have more than one firm producing the good. What is natural […]
How does an induction furnace work?
How does an induction furnace work? An induction furnace consists of a nonconductive crucible holding the charge of metal to be melted, surrounded by a coil of copper wire. A powerful alternating current flows through the wire. The coil creates a rapidly reversing magnetic field that penetrates the metal. What is the principle of induction […]
What method should you follow when installing the lock nuts?
What method should you follow when installing the lock nuts? Place the correct-size plain washer over the threaded end of the bolt or stud. Thread the replacement lock nut onto the bolt or stud by hand until you feel the resistance caused by the nylon insert. Tighten the lock nut firmly, turning clockwise, with the […]
What is the physical significance of Prandtl number?
What is the physical significance of Prandtl number? The Prandtl number is an example of a dimensionless number that is an intrinsic property of a fluid. Fluids with small Prandtl numbers are free-flowing liquids with high thermal conductivity and are therefore a good choice for heat conducting liquids. What is the physical significance of the […]
What is combined heat and power CHP systems?
What is combined heat and power CHP systems? Combined heat and power (CHP), also known as cogeneration, is: A suite of technologies that can use a variety of fuels to generate electricity or power at the point of use, allowing the heat that would normally be lost in the power generation process to be recovered […]
How can you protect your current?
How can you protect your current? Overcurrent protection devices include circuit breakers and fuses. Overcurrent protection devices are meant to protect against the potentially dangerous effects of overcurrents, such as an overload current or a short-circuit current, which creates a fault current. Which device is used to avoid overload current in a circuit? Circuit breakers […]
What is the escape character in shell script?
What is the escape character in shell script? Escape characters. Escape characters are used to remove the special meaning from a single character. A non-quoted backslash, \, is used as an escape character in Bash. It preserves the literal value of the next character that follows, with the exception of newline. How do you escape […]
Can I get a grant for a ground source heat pump?
Can I get a grant for a ground source heat pump? Now extended to March 2022, the Green Homes Grant is a scheme to support energy efficiency improvements in existing households across England. The improvements supported by the scheme include insulation and ground source heat pump installations. Vouchers of up to £10,000 will be issued […]
What is considered a medical implant?
What is considered a medical implant? Medical implants are devices or tissues that are placed inside or on the surface of the body. Many implants are prosthetics, intended to replace missing body parts. The risks of medical implants include surgical risks during placement or removal, infection, and implant failure. What are medical implants made of? […]