ELECTRICIAN 2nd YEAR MODULE – Circuit Breakers and Relays ONLINE TEST July 2, 2025July 2, 2025 by admin TRANSLATE THIS QUIZ IN YOUR LANGUAGE इस प्रश्नोत्तरी का अपनी भाषा में अनुवाद करें <<123456789101112131415>> 0% Question 1 of 15 1. What is the effect, if the test button marked as 'X' is closed permanently in ELCB? Circuit functions normally Circuit trips intermittently Circuit switch off completely Circuit will not trip on leakageQuestion 1 of 15Question 2 of 15 2. What is the cause for the defect if phase to ground fault on the transmission line? Fuse failure Components failure Insulation failure Human errorQuestion 2 of 15Question 3 of 15 3. What is the function of Buchholz relay in power transformer? Open circuit and over voltage protection Over voltage and earth fault protection Open circuit and earth fault protection Over load and short circuit protectionQuestion 3 of 15Question 4 of 15 4. What is the pick-up voltage in a over voltage relay indicated? Maximum voltage rating of relay Minimum voltage rating of relay Working voltage of relay Minimum voltage to start the relayQuestion 4 of 15Question 5 of 15 5. What is the function of relay to the breaking operation of circuit breaker in control circuit? Interpreting the fault situation to operate breaker Analyzing the condition of breaker Controlling the Speed in case of fault Sensing the fault quantitiesQuestion 5 of 15Question 6 of 15 6. What is the defect in an air circuit breaker, if trips intermittently on loading? Insufficient air pressure Line voltage is too high Excessive heat Incorrect setting of relayQuestion 6 of 15Question 7 of 15 7. Which type of load is protected by 'G' series MCB? Ovens Air conditioners General lighting systems GeysersQuestion 7 of 15Question 8 of 15 8. What is the purpose of trip coil used in circuit breakers? Easy operation Accurate operation Emergency operation Remote operationQuestion 8 of 15Question 9 of 15 9. Which type of relay is used in both A.C and D.C supply? Clapper-type armature relay Reed relay Impulse relay Thermal relayQuestion 9 of 15Question 10 of 15 10. Which relay hold their contacts in position after power is cutoff? Latching relay Current relay Voltage relay Reed relayQuestion 10 of 15Question 11 of 15 11. What is the defect in a oil circuit breaker if the oil heats up excessively? Excessive load Poor dielectric strength Line voltage is too high Defective tripping mechanismQuestion 11 of 15Question 12 of 15 12. Which circuit breaker is installed along with wiring circuit against leakage current protection? MCCB OCB MCB ELCBQuestion 12 of 15Question 13 of 15 13. What is the name of circuit breaker? Air break circuit breaker Vacuum circuit breaker Air blast circuit breaker Oil circuit breakerQuestion 13 of 15Question 14 of 15 14. Which circuit breaker is used as a switch and protective device in the domestic wiring circuit? Earth Leakage circuit breaker Moulded case circuit breaker Air circuit breaker Miniature circuit breakerQuestion 14 of 15Question 15 of 15 15. How the rupturing capacity of circuit breaker is rated? MVA KVAR KW KVQuestion 15 of 15 Loading...
