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What are damping devices?
due to reflecting torque pointer moves in one direction by due to controlling torque pointer moves in opposite direction therefore pointer oscillate in forward and backward direction.if there is no deflecting torque the device to ensure that the pointer comes to rest quickly with minimum oscillation at its correct reading position is known as damping device...
How torque is produced in a induction motor?
Torque is a Force applied at a Moment Arm. Or a force applied to a bar of a set length. Torque is a unit of Foot-pounds. If you have a ratchet wrench that has a 1 foot handle and you use it to torque a Bolt by applying a force of 20 lbs this will produce a 20 ft-lb torque load to the bolt. ( 1 Foot X 20 Lbs). This can be converted to 240 inch-lbs. The torque produced by car engines are also measured in terms of foot-pound of torque. This defines the power that the engine produces at the Shaft. This is convenient to use in calculating how much power is delivered to a car's transmission or wheels to allow the engineer to determine how fast the car will go, etc.
How does the torque vary when the fan is the load?
When a fan operates as a load, the torque varies based on the speed and the characteristics of the fan itself. As the speed increases, the load torque typically increases due to the increased aerodynamic resistance and power requirements to move air. Conversely, when the speed decreases, the torque required also decreases. This relationship is crucial for understanding fan performance and efficiency in various applications.
What is deflecting torque?
Controlling torque controls the deflection and tries to stop the pointer at its final position.But due to inertia, the pointer oscillates around its final position before coming to rest. Hence damping torque is provoded to avoid this oscillation and bring the pointer quickly to its final position.Thus the damping torque is never greater than the controlling torque. In fact it is the condition of critical damping which is sufficient to enable the pointer to rise quickly to its deflected position without overshooting.
What is more damping torque or controlling torque?
Following are the essentials of indicating instruments: 1. Operating torque, 2. Controlling torque, and 3. Damping torque. OPERATING TORQUE Operating torque is produced by making use of any of these effects: magnetic, electromagnetic induction...., it is required to move the moving system of the instrument. CONTROLLING TORQUE Controlling torque opposes the operating torque and increases with the deflection of the moving system. It ensures that the deflection of the pointer is according to the magnitude of electrical quantity being measured. If this torque were not provided, the pointer would continue to move indefinitely and the deflection shall be independent of electrical quantity being measured. It also bring the pointer back to zero when the instrument is removed from the circuit. This torque is either obtained by spring or by gravity. In spring control, one or two phosphor bronze spiral hair-springs are attached to the moving spindle. The other end are attached to the frame. In this case Tc proportional to Angle of deflection. In gravity control, a small weight is attached to the moving system in such a way that it tries to bring the pointer back to the zero position when it is deflected, due to gravity. In this casse Tc proportional to sine of the angle of deflection. DAMPING TORQUE Controlling torque controls the deflection and tries to stop the pointer at its final position where its Td = Tc But due to inertia, the pointer oscillates around its final position before coming to rest. Hence damping torque is provided to avoid this oscillation and bring the pointer quickly to its final position. Thus the damping torque is never greater than the controlling torque. In fact it is the condition of critical damping which is sufficient to enable the pointer to rise quickly to its deflected position without overshooting.
Why are the opposite poles of two magnets attracted to each other due to magnetic force?
The opposite poles of two magnets are attracted to each other due to magnetic force because of the alignment of their magnetic fields. This alignment creates a force that pulls the opposite poles together, resulting in attraction.
What does alignment have to do with magnet strenfth?
Alignment refers to the arrangement of magnetic domains within a material. When these domains are aligned in the same direction, the magnetic strength is increased because their magnetic fields reinforce each other. In contrast, if the domains are randomly oriented, the magnetic strength is weaker due to opposing magnetic fields canceling each other out.
When due for rotation and balance and alignment which should you do first?
Rotate and balance, then alignment.
If a matrial is magnitas it becomes a?
If a material is magnetic, it becomes attracted to other magnetic materials due to the presence of magnetic fields. This attraction occurs based on the alignment of the material's magnetic domains.
Are Iron Atoms known to be magnetic?
Iron atoms are inherently magnetic due to the alignment of their electron spins. This property allows iron to be attracted to magnetic fields and exhibit magnetic behavior.
What is the planar alignment of minerals due to differential stress during metamorphism?
During metamorphism, minerals align perpendicular to the direction of maximum stress, which is known as foliation. This alignment results in a planar fabric within the rock, giving it a layered appearance. The degree of alignment can vary from a weak preferred orientation to a strong and well-developed foliation.
What is the interaction between the magnetic fields of two bar magnets?
When two bar magnets are brought close together, their magnetic fields interact. Like poles repel each other, while opposite poles attract. This interaction is due to the alignment of the magnetic domains within the magnets.
What is the torque due to gravity on the disk?
The torque due to gravity on the disk is the force of gravity multiplied by the distance from the center of the disk to where the force is applied.
Is amphibolite foliated?
Yes, amphibolite is a foliated metamorphic rock. It forms through the metamorphism of basalt or gabbro and typically exhibits a well-developed foliation called schistosity due to the alignment of its mineral grains.
Metamorphic rock with a banded appearance due to the alignment of material are?
No
What blank poles of magnets attract to each other?
The North Pole of one magnet and the South Pole of another magnet attract each other. This is due to the alignment of magnetic fields, where opposite poles are attracted to each other.
Why is the screw not tightening properly in the metal material?
The screw may not be tightening properly in the metal material due to factors such as incorrect size or type of screw, worn-out threads on the screw or in the material, improper alignment of the screw and the hole, or insufficient torque applied to the screw.
