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Why free surface effect is detrimental in ro-ro ferries?
RO-RO ferries have large open decks (car decks) without any sub division or bulkheads. Hence a small amount of water would be able to impart a significant free surface effect.
What is the effect or reheater in the gas turbine?
1.Turbine output is increased for same compressor work. 2.As more heat is supplied,thermal efficiency decreases.
What is reheat factor in power plant?
The reheat factor in the steam turbine refers to the Thermodynamic effect on the turbine efficiency. Others factors includes the cumulative heat, and the steam turbine condition curve.
How does eddy current loss effect a transformer?
Eddy currents act to increase the temperature of a transformer's core above ambient temperature, resulting in a loss of energy through heat transfer -thus reducing its efficiency.
What is the significant relationship of the no load loss in excitation current test in transformer?
The no load losses are the losses caused by energizing the transformer. These are constant losses, regardless of loading. This in effect tells you the efficiency of the transformer. (Power in) - (no load losses) = (Power out)
What are the main causes of friction?
The main causes of friction are roughness of surfaces, the force pushing the surfaces together, and the type of materials involved. Friction occurs when these factors create resistance to the motion of an object across a surface.
How does the roughness of a surface effect friction?
The rougher then surface the greater the frictional force. When a surface is rough and you put friction to it, it creates sparks while smooth surfaces when friction is added causes a slight stactic shock.
What does efficiency do on a pick-axe?
It doesn't 'do' anything. Efficiency measures the effect something has in proportion to the energy required for that effect.
What three factors effect angle of repose?
The three main factors that affect the angle of repose are particle shape, size distribution, and surface roughness. A particle's shape influences how particles stack together, with angular particles generally forming steeper angles. Smaller particle sizes typically lead to flatter angles, while surface roughness can impact the interlocking and sliding of particles.
What variable doesn't affect friction?
The variable that does not affect friction is the surface area in contact. Friction is primarily influenced by the nature of the surfaces in contact, the applied force, and the roughness of the surfaces. The surface area does not have a direct effect on the frictional force generated between two surfaces.
What is the effect of Roughness on Reynolds number?
Roughness increases the frictional resistance to fluid flow, which in turn affects the Reynolds number. As roughness increases, the frictional forces also increase, leading to a decrease in the Reynolds number for a given flow situation. This can impact the flow regime and overall behavior of the fluid flow.
What is the effect of decreasing the surface area of the block in contact with the table on the coefficient of kinetic friction?
Decreasing the surface area in contact with the table will increase the pressure at that contact point. This can lead to an increase in the coefficient of kinetic friction, as the roughness at the microscopic level can become more significant.
What is the design and function of a helical fin shotgun slug sabot?
A helical fin shotgun slug sabot is designed to stabilize and improve the accuracy of a shotgun slug by spinning it as it travels through the air. The helical fins create a rifling effect, similar to a bullet in a rifled barrel, which helps the slug maintain a straighter trajectory and hit the target more accurately.
What are some words that begin with Ef?
effect...efficiency
How does friction effect work?
As an object (I will use a ball for an example) slides across a surface or terrain it will gradually heat up and slow down due to the composition and features on the surface. Such features include coarseness/roughness. Friction is described in Newtons Three Laws of motion.
What has the author John M Buffington written?
John M. Buffington has written: 'Effects of hydraulic roughness and sediment supply on surface textures of gravel-bedded rivers' -- subject(s): Habitat, Effect of sediments on, Fishes, Salmonidae, Sediment transport, Channels (Hydraulic engineering)
What is the effect of cracked diaphragm in transmission?
The effect of a cracked diaphram in transmission is that it reduces the efficiency of the system.
