engineering recuitment PSTCL ALM (Assistant Lineman) 2021 Mock Test Electrician and Wireman Power Systems Relays and Voltage Regulators
In AC relay, the chattering noise can be reduced by
1
Placing asbestos between the contacts
2
Providing a shading coil near the tip of the magnetic field
3
Cleaning the dirty particles over the coil and contacts
4
Applying varnish over the coil core