Category: Engineering

What section of SDS has exposure limits? Section 8—Exposure controls/Personal protection: OSHA’s permissible exposure limits (PELs), threshold limit values (TLVs), appropriate engineering controls, and personal protective equipment (PPE). What information does a safety data sheet SDS contain? The SDS includes information such as the properties of each chemical; the physical, health, and environmental health hazards; […]

What do you mean by heat engine heat pump and refrigerator? A refrigerator is a reversed heat engine, where heat is pumped from a body at low temperature to a body at high temperature. Any refrigerating system is a heat pump, which extracts heat from a cold body and delivers it to a hot body. […]

What kind of volcano usually forms over a hot spot? shield volcanoes What type of volcano is a cinder cone? Cinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks […]

What is surface treatment of metals? Metal surface treatment is a process where metal parts are prepared for painting. The preparation is commonly referred to as coatings pretreatment. This usually involves creating a physical barrier that will protect metal against a corrosive environment. What is surfacing in welding? A weld applied to a surface, as […]

What is the diameter of the fire hose nozzle? 1.125 in What size are fire hoses? There are three standard-sized hoselines that the fire service uses as a front line attack line: 1½, 1¾ and 2½ inch. The remaining situations might involve large master streams or deck guns. The key with selecting the correct size […]

What is the external opportunity cost of a successful biking company in a community? Answer: The cost of increased rates of accidents/injuries due to road accidents associated with cycling. Explanation: Opportunity cost is referred to as an alternative cost which is the value of the other choose left out while settling for a better alternative. […]

What is the weight density of a 2.24 inch diameter titanium sphere that weighs 0.82 lb? What is the density of a 2.24 in. diameter sphere of titanium that weighs 0.82 lb?… Material Mass Density (g/cm3) Weight Density (lb/in.3) Water (Pure) 1.00 0.036 Water (Sea) 1.03 0.037 Ice 0.92 0.034 Concrete 2.40 0.087 How do […]

How do you solve support reactions? How to Calculate Reactions at Supports? Calculating the Reactions at the Supports of a Beam. Let the sum of moments about a reaction point equal to ZERO (ΣM = 0) Let the sum of vertical forces equal to 0 (ΣFy = 0) How do you know if a joint […]

What is the current through the 3.0 Ω resistor? The current through the 3.0 Ω resistor is 2.0 A. How do you find the voltage drop across 3 resistors? Ohm’s Law states that V=I*R, where V is voltage, I is current and R is resistance. In a series circuit, the voltage drop across each resistor […]

When velocity potential φ exists the flow is? If velocity potential (Φ) exists, the flow must be irrotational. 2. When velocity potential exists in a flow it means? If there exists velocity potential, then the fluid flow is rotational. If the given velocity potential satisfies the Laplace equation (Eq. 4), then the fluid flow is […]