Outdoor switchgear is generally used for voltage beyond? Mark as favorite Copy Link 132 kV 66 kV 11 kV 33 kV Check Answer
With which of the following, a circuit breaker must be equipped for remote operation? Mark as favorite Copy Link Time delay trip Shunt trip Inverse time trip All of the above Check Answer
The most serious result of a major uncleared short-circuit fault could be? Mark as favorite Copy Link heavy current in neutral blowing off of fuse fire deterioration of insulation Check Answer
The main factor, in favour of the use of aluminium as bus-bar material is its? Mark as favorite Copy Link high resistivity low cost low melting point low density Check Answer
Switching over voltages arc more hazardous than lightning surges in case of? Mark as favorite Copy Link unbalanced systems 11 kV systems HV and UHV svstems low voltages Check Answer
The over-voltage surges in power systems maybe caused by? Mark as favorite Copy Link lightning switching resonance Any of the above Check Answer
By which of the following methods major portion of the beat generated in a H.R.C. fuse is dissipated? Mark as favorite Copy Link Conduction Radiation Convection All of the above Check Answer
The relay operating speed depends upon? Mark as favorite Copy Link armature core air gap the spring tension the rate of flux built up all of the above Check Answer
Air blast circuit breaker is used for? Mark as favorite Copy Link intermidant duty short duty repeated duty over currents Check Answer
Ionization in circuit breaker is facilitated by? Mark as favorite Copy Link increasing field strength increase of mean free path high temperature all of the above Check Answer