Category: Engineering

What number does the Lucas sequence approach? Definition. Similar to the Fibonacci numbers, each Lucas number is defined to be the sum of its two immediate previous terms, thereby forming a Fibonacci integer sequence. The first two Lucas numbers are L0 = 2 and L1 = 1 as opposed to the first two Fibonacci numbers […]

Which of the following quenching media is most severe in its quenching action? Different quenching media have different degrees of severity. Caustics are the most severe quenchants, followed by oils, then salts and, finally, gases. Which quenching media gives the fastest cooling? Brine. Brine is a mixture of water and salt. Brine cools faster than […]

What are the parts of valve? Components body. ports. seat. stem. disc when valve is open. handle or handwheel when valve is open. bonnet. packing. What is the function of spring in a control valve? A valve spring is placed around the stem of a valve and held in place by a retainer. Its main […]

What is the difference between a job and a profession Brainly? A job is the work you do and a profession includes the environment you work in. A job is the work you do and a profession includes your career field. What is the difference between a job and a profession quizlet? Terms in this […]

What is the velocity profile for laminar flow? The laminar velocity profile of the fluid flow governed by the pressure gradient is parabolic. where R is the tube radius, v(max) is the maximal velocity or the centerline velocity of the velocity profile. It is assumed that there is only one velocity component in the tube […]

What is wet steam dry steam and superheated steam? Pressure-Temperature Relationship of Water & Steam Saturated (dry) steam results when water is heated to the boiling point (sensible heating) and then vaporized with additional heat (latent heating). If this steam is then further heated above the saturation point, it becomes superheated steam (sensible heating). What […]

What is the function of a damper? A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate […]

Can exchange mass and energy with the surroundings? An open system can exchange both energy and matter with its surroundings. The stovetop example would be an open system, because heat and water vapor can be lost to the air. An isolated system is one that cannot exchange either matter or energy with its surroundings. What […]

How do you calculate mass from bulk density? The wet bulk density will be the total mass divided by the total volume. The solid mass is 375 kg and the mass of the water is 0.15 * 375 = 56.25 kg, for a total mass of 431.25 kg. So the wet bulk density is 431.25/0.75 […]

What does an emergency action plan do? An emergency action plan (EAP) is a written document required by particular OSHA standards. [29 CFR 1910.38(a)] The purpose of an EAP is to facilitate and organize employer and employee actions during workplace emergencies. What are the three main steps in an emergency action plan? 3 Steps to […]