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major disadvantage is that moving coil galvanometer is not suitable for a.c measurement
The weston type galvanometer is a moving coil galvanometer in which a pointer is attached to the coil for measuring deflection due to torque .
yes
To stop the moving coil from movement as if there wasnt any opposite couple the coil will complete rotating and this wouldnt help measurement.
When current is passed throgh a galvanometer, the coil oscillates about its mean position before it comes to rest.To bring the coil to rest immediately, the coil is wound on a metallic frame.Now, when the coil oscillate, eddy currents areset up in the metallic frame, which opposes further oscillations of the coil.This inturn enables the coil to attain its equilibrium position almost instantly.Since the oscillation of the coil die out instantaneously, the galvanometer is called dead beat galvanometer.
major disadvantage is that moving coil galvanometer is not suitable for a.c measurement
What is the difference between the construction of a moving coil galvanometer and a ballistic galvanometer?
The weston type galvanometer is a moving coil galvanometer in which a pointer is attached to the coil for measuring deflection due to torque .
a series resistence with its coil
it will not work
yes
Moving coil galvanometre is a device which is used to detect current in a curcuit.
A moving coil galvanometer is a type of scanning device used in the transportation and trucking industry. The vehicle is pulled through a fixed scanner while an operator watches a closed circuit television.
To stop the moving coil from movement as if there wasnt any opposite couple the coil will complete rotating and this wouldnt help measurement.
moving coil galvanometer
Moving coil galvanometer is used to detect unknown resitance of the both ac or dc circuits :)deepak instrumentation engineerAnswerA 'galvanometer' is simply an instrument that detects and measures small currents; 'moving coil' describes its operating principle. A moving-coil galvanometer is a d.c. instrument; if subject to a.c., then it will simply vibrate as it will not be able to respond the the frequency (unless the frequency is very low, in which case, it will sweep back and forth in step with that frequency).The moving-coil principle is applied to other instruments, and can be used in the construction of multimeters. In the case of a multimeter, a rectifier circuit is incorporated so that it can be used to measure a.c. currents and voltages.
A galvanometer can be converted into a voltmeter by connecting it with very high resistance.