Electrical Engineering Questions And Answers :: Switchgear Protections: part2

Electrical Engineering : Switchgear Protections QUESTIONS AND ANSWERS :: part2 : 6 to 10

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

6.Large internal faults are protected by

merz price percentage differential protection
mho and ohm relays
horn gaps and temperature relays
earth fault and positive sequence relays

7.Ionization in circuit breaker is facilitated by

high temperature
increase of mean free path
increasing field strength
all of the above

8.The ground wire should not be smaller than No ______ copper.


9.The interaction between a transmission line and communication line js minimized by

transposing transmission as well as communication lines
increasing the height of the trans-mission line tower
increasing the distance between the two lines
all of the above

10.Overheating of relay contacts or contact born out is due to

slow making and breaking of load circuit contacts
foreign matter on the contact surface
too low contact pressure
all of the above

More Switchgear Protections QUESTIONS AND ANSWERS available in next pages

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