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To produce a constant torque on the coil
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How is magnetic field made radial in a moving coil galvanometer?
The magnetic field in a moving coil galvanometer is made radial by surrounding the coil with a cylindrical magnetic core. When current flows through the coil, it creates a magnetic field perpendicular to the coil. This magnetic field interacts with the radial magnetic field of the core, causing a torque on the coil that deflects the pointer.
Are radial magnetic fields measurable?
Yes, radial magnetic fields are measurable using techniques such as magnetic field sensors or magnetometers. These devices can detect and quantify the strength and direction of magnetic fields, including radial ones.
Why radial magnetic field?
A radial magnetic field is often used in applications where the magnetic field needs to be concentrated in a particular area, such as in electric motors or generators. By having a radial magnetic field, the magnetic flux can be directed efficiently through the device and produce the desired output. Additionally, a radial magnetic field can minimize energy losses and improve the overall performance of the device.
Why is phosphor- bronze wire used in moving coil galvanometer?
restoring torque is k theta the value of k depends upon the nature of the material used for suspension strip value of k is very small for quartz or phosphor bronze so in galvanometer phosphor bronze wire is used.
Why soft iron is placed in moving coil galvanometer?
1. to intensify the magnetic field by reducing the length of airgap across which the magnetic flux has to pass; 2. to give a radial magnetic flux of uniform density, thereby enabling the scale to be uniformly divided.
Why it is an advantage for armature to rotate in radial magnetic field rather than uniform?
1.maximum torque is experienced 2.torque is uniform for all positions of coil
Whats meant by radial magnetic field?
A radial magnetic field ensures that the plane of the coil (rotating within the magnetic field, in say a DC motor) is always flat within the external magnetic field ensuring maximum torque in (nearly) all positions. Hope this helps!
Why permanent magnets are curve in dc motor?
To provide a radial magnetic flux.
What is Moving the wrist back and forth in frontal plane is known as?
Moving the wrist back and forth in the frontal plane is known as radial and ulnar deviation.
What type of microwave tube amplifier used an axial magnetic field and radial magnetic field?
That would be a TWT amplifier (traveling wave tube).
What is radial direction?
the direction of OP is call radial direction of the moving point p while the direction of OQ which is perpendicular to OP in the sense of (theta)angle is called transverse direction of the moving point P.
Are radial and centripetal acceleration the same?
No, radial and centripetal acceleration are not the same. Radial acceleration is the acceleration towards the center of a circle, while centripetal acceleration is the acceleration that keeps an object moving in a circular path.
