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What is the amount of axial stress on a member which is subjected to a sudden load when compared to load applied gradually?
The maximum stress induced in a body due to suddenly applied load is twice the stress induced when the same load is applied gradually
What are the stress involved in the open coiled helical spring subjected to an axial load?
When an open coiled helical spring is subjected to an axial load, it experiences both shear and normal stresses. The primary stress is shear stress, which arises due to the torsional effects of the load on the coil. Additionally, there can be normal stress induced by the axial load, particularly if the spring is compressed or extended. The combined effect of these stresses can affect the spring's performance and durability.
How do you calculate half load speed of induction motor if given full load peed?
To calculate the half load speed of an induction motor, you first need to understand that the synchronous speed remains constant regardless of the load. The full load speed is generally slightly less than the synchronous speed due to slip. To estimate the half load speed, you can use the slip at full load and apply it to the synchronous speed, recognizing that slip may change slightly at half load. However, for a rough estimate, you can assume half load speed is close to the full load speed, as the change in speed due to varying loads is minimal in induction motors.
Why metals break on dynamic load but not on static load of same magnitude?
That isn't necessarily true. If the metal is under repeated dynamic loading, it becomes a matter of material fatigue and not strength. For instance, if you bend a paper clip back and forth repeatedly, it becomes easy to break. The material properties have changed (more brittle) due to the repeated dynamic load.In the case of impact or blast loading, it is actually the opposite. Materials often have the ability to withstand much larger loads than they could statically, but for very short durations (on the scale of milliseconds).because i said so.Dynamic load- Any load which is nonstatic, such as a wind load or a moving live load.Static Load - Any load, as on a structure, which does not change in magnitude or position with time
What is the dead load and a live load and a dynamic load in a steam turbine?
In the context of a steam turbine, the dead load refers to the static weight of the turbine components and associated structures that are always present, such as the casing, rotor, and support structures. The live load includes any additional loads that fluctuate during operation, such as the weight of fluids and steam, or operational stresses from vibration and thermal expansion. A dynamic load encompasses forces that change over time due to movement, such as the impact of rotating parts or fluctuations in steam pressure, which can induce vibrations and affect the turbine's performance. Understanding these loads is crucial for designing a safe and efficient turbine system.
What is the amount of axial stress on a member which is subjected to a sudden load when compared to load applied gradually?
The maximum stress induced in a body due to suddenly applied load is twice the stress induced when the same load is applied gradually
What is the difference between tensile stress and breaking stress?
tensile stress is due to just the tension in the load whereas breaking stress can be due to breaking,shearing or compression!
What is the difference between Bending and Direct Stress?
-> when a structural body gets deviated from its original position or from its centroidal axis due to externally applied load,then it is termed as BENDING->DIRECT STRESS is the stress which act normal to the plane-> stress and bending are the two different things. stress produced by load per area & bending is the effect produced by load and stress.
What is the thermal stress equation used to calculate the stress induced in a material due to changes in temperature?
The thermal stress equation used to calculate stress induced in a material due to temperature changes is given by: ET where: thermal stress E Young's modulus of the material coefficient of thermal expansion T change in temperature
Where will you find the maximum shear stress in a beam?
The maximum stress occurs where shear load is maximum and maximum stress is at the center of the beam cross section if loaded in shear due to bending. It drops to zero at the top and bottom surfaces. The average stress is load divided by area ; maximum stress is dependent on shape of cross section and is 1.5 times load divided by area at the cross section center for rectangular cross section. For shear due to twist, max shear stress in the outer surface.
What are the stress involved in the open coiled helical spring subjected to an axial load?
When an open coiled helical spring is subjected to an axial load, it experiences both shear and normal stresses. The primary stress is shear stress, which arises due to the torsional effects of the load on the coil. Additionally, there can be normal stress induced by the axial load, particularly if the spring is compressed or extended. The combined effect of these stresses can affect the spring's performance and durability.
What is instantaneous stress?
Instantaneous stress refers to the stress experienced by a material at a specific moment in time, typically due to an applied force or load. It is a snapshot of the internal forces within the material at that exact instant and can help in analyzing the material's response to the applied load.
Is the stress that causes stretching and elongation.?
Yes, stress can cause materials to stretch and elongate. This is due to the internal forces within the material rearranging to accommodate the external load applied.
What is fracture in mechanics?
Fracture in Mechanics is the event in which an object loses material continuity (it splits in more than one piece) due to the application of a stress load. Said stress load has a consequence in strain, that with the proper values, can induce an object to "fail" in an event called fracture.
What are the causes absenteeism?
due to illness Bordon heavy work load stress less motivation no job rotation working in same field
How do you calculate pulley force needed?
To calculate the force needed on a pulley system, you can use the formula: Force = (mass * acceleration) + (mass * gravity), where mass is the load being moved, acceleration is the desired speed at which the load should move, and gravity is the force due to gravity acting on the load. By considering these factors, you can determine the force required to move the load with the pulley system.
How do you calculate half load speed of induction motor if given full load peed?
To calculate the half load speed of an induction motor, you first need to understand that the synchronous speed remains constant regardless of the load. The full load speed is generally slightly less than the synchronous speed due to slip. To estimate the half load speed, you can use the slip at full load and apply it to the synchronous speed, recognizing that slip may change slightly at half load. However, for a rough estimate, you can assume half load speed is close to the full load speed, as the change in speed due to varying loads is minimal in induction motors.
