CIRCUIT BREAKERS AND RELAYS - Quiz

1) Which circuit breaker is installed along with wiring circuit against leakage current protection?

OCB MCB ELCB MCCB

2) Which relay hold their contacts in position after power is cutoff?

Read relay Current relay Voltage relay Latching relay

3) How the rupturing capacity of circuit breaker is rated?

KV KW MVA KVAR

4) What is the pick-up voltage in a over voltage relay indicated?

Working voltage of relay Maximum voltage rating of relay Minimum voltage rating of relay Minimum voltage to start the relay

5) What is the function of Buchholz relay in power transformer?

Over load and short circuit protection Over voltage and earth fault protection Open circuit and earth fault protection Open circuit and over voltage protection