How do you find the IMA of a fixed pulley? In general, the IMA = the resistance force, Fr, divided by the effort force, Fe. IMA also equals the distance over which the effort is applied, de, divided by the distance the load travels, dr. What is the mechanical advantage of a fixed pulley? Pulleys […]
Does temperature remain constant in an adiabatic process?
Does temperature remain constant in an adiabatic process? An adiabatic process is a thermodynamic process during which no energy is transferred as heat across the boundaries of the system. As there is no exchange of heat with surroundings, so total heat of the system remains constant. What stays constant in an adiabatic process? Remember adiabatic […]
What is the motor in a car?
How are standard sectional switch device boxes mounted?
How are standard sectional switch device boxes mounted? How are standard sectional switch (device) boxes mounted? NEC 314.20 states that boxes must be mounted so that they will be set back not more than 1/4in. (6mm) in noncombustible walls or ceilings and flush when installed in combustible. How high above the finished floor in the […]
What is glass transition temperature of plastics?
What is glass transition temperature of plastics? 170 K to 500 K. What happens at the glass transition temperature? There is a certain temperature(different for each polymer) called the glass transition temperature, or Tg for short. When the polymer is cooled below this temperature, it becomes hard and brittle, like glass. Some polymers are used […]
What do you mean by mean effective pressure?
What do you mean by mean effective pressure? The mean effective pressure is a quantity relating to the operation of a reciprocating engine and is a valuable measure of an engine’s capacity to do work that is independent of engine displacement. What is brake mean effective pressure? Brake mean effective pressure (BMEP) is the mean […]
Is it better to weld uphill or downhill?
Is it better to weld uphill or downhill? In downhill welding, you weld from the top down. Uphill is considered stronger, but as it takes longer, the potential for burn through is greater. It is better for thicker steels, where downhill is adequate for thinner steels. Both techniques require practice, but can produce a good […]
What material is a paper made of?
What material is a paper made of? You gotta have fiber! Over the centuries, paper has been made from a wide variety of materials — wood pulp, rice, water plants, cotton, even old clothes! What is tree free paper made of? sugarcane waste fiber What part of the tree is paper made out of? cellulose […]
What is the difference between a white and black rubber mallet?
What is the difference between a white and black rubber mallet? White mallets are less likely to leave marks than black mallets. Carpet layers, tile installers and others who work with materials with a surface that a black mallet might scuff use them. White mallets are somewhat more expensive than black and do not come […]
How do you find the specific weight of mercury?
How do you find the specific weight of mercury? Mass is a property and the SI unit for density is [kg/m3]. The Imperial (U.S.) units for density are slugs/ft3 but pound-mass per cubic foot – lbm/ft3 – is often used….Specific Gravity for some common Materials. Substance Specific Gravity – SG – Mercury 13.59 Nickel 8.73 […]