Why is spring control preferred over gravity control?

Why is spring control preferred over gravity control?

This is the most common method of providing controlling torque in electrical instruments. It may involve one or more springs. When the pointer deflects the spring twists in the opposite direction producing a restoring torque proportional to the angle of deflection of the moving system.

What are the method of providing controlling torque?

The controlling torque in indicating instruments may be provided by one of the following two methods: Spring control. Gravity control.

How do you control gravity?

In gravity control – gravity controlled instruments, as shown. A small adjustable weight is attached to the spindle of the moving system such that the deflecting torque produced by the instrument has to act against the action of gravity. Thus a controlling torque is obtained. This weight is called the control weight.

What is gravity control backward torque?

Gravity Control: In this method, a small adjustable weight W is attached to the moving system which provides the necessary controlling torque. Under the action of deflecting torque, the pointer moves from zero position (from left to right), and the control weight moves in the opposite direction.

What instrument moves coil?

A measuring instrument in which current or voltage is determined by the couple on a small coil pivoted between the poles of a magnet with curved poles, giving a radial magnetic field. The instrument is suitable for measuring d.c. but can be converted for a.c. by means of a rectifier network.

What is damping torque instrument?

Damping torque or damping forces is the speed deviation of an electromechanical torque deviations of a machine while the angle deviation is called synchronizing torque [1].

What is spring control torque?

In this, the controlling torque is produced by using springs as shown below. Two hairsprings S1 and S2 are wound on the spindle and are coiled in such a way that they are opposite to each other and act against each other. When deflecting torque gets applied on the pointer, the starts moving.

Which torque is absent in energy meter?

In energy meter, there is no controlling torque, as the driving torque alone is enough to cause continuous revolution of the disc. 12.

Can humans control gravity?

The better news is that there is no science that says that gravity control is impossible. We are quite adept at controlling electromagnetic phenomena, so one can presume that such a connection might eventually lead to using our control of electromagnetism to control gravity.

What is the scale of Mi instrument?

(Moving Coil) and M.I. (Moving Iron) type of instruments can be distinguished by their scale. Scale in MC instruments is linear but the scale in MI instruments is non-linear. 1.

What is Mi type voltmeter?

Definition: The instrument in which the moving iron is used for measuring the flow of current or voltage is known as the moving iron instrument. The magnetic field induces by the electromagnet whose strength depends on the magnitude of the current passes through it.

What is Mi and MC?

Home / Electrical Articles / Comparison between moving-iron (M.I) instruments and moving-coil( M.C)instruments.

How is a Spring MVC controller used in an application?

It is typically used in combination with annotated handler methods based on the @RequestMapping annotation. A spring mvc controller is used typically in UI based applications where response is generally HTML content. The handler method returns the response “view name” which is resolved to a view technology file (e.g. JSP or FTL) by view resolver.

Which is an example of spring control in an instrument?

In an instrument where the deflecting torque is uniform, spring control provides a linear or evenly spaced scale over a whole range. For example in a PMMC instrument, the deflecting torque is directly proportional to current flowing through the operating coil.

How does the handler method in spring work?

The handler method returns the response “view name” which is resolved to a view technology file (e.g. JSP or FTL) by view resolver. And then parsed view content is sent back to browser client.

What kind of Technology is the Spring Framework?

The technology that Spring is most identified with is the Dependency Injection (DI) flavor of Inversion of Control. The Inversion of Control (IoC) is a general concept, and it can be expressed in many different ways.

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