What is reverted gear train? When the axes of the first gear (i.e. first driver) and the last gear (i.e. last driven or follower) are co-axial, then the gear train is known as reverted gear trainas shown in Fig. What is the purpose of having a gear train in a power transmission system? A transmission […]
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 […]
How do you find the IMA of a fixed pulley?
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 […]
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 the purpose of hardness test?
What is the purpose of hardness test? The principal purpose of the hardness test is to determine the suitability of a material for a given application, or the particular treatment to which the material has been subjected. The ease with which the hardness test can be made has made it the most common method of […]
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 […]