Buchholz's relay gives warning and protection against_________________?
Correct answer: A. electrical fault inside the transformer itself
- A. electrical fault inside the transformer itself
- B. electrical fault outside the transformer in outgoing feeder
- C. for both outside and inside faults
- D. none of the above
Explanation
A Buchholz relay is installed in the oil pipe between the transformer tank and conservator, so it detects gas formation and oil surges caused by internal faults. It does not normally protect against faults on an outgoing feeder.
Last updated
Practise Electrical Machines
1,061 free Electrical Machines MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
5 H.P., 50-Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest ?
A 220 V D.C. generator is run at full speed without any excitation. The open circuit voltage will be_____________?
A 3-phase 440 V, 50 Hz induction motor has 4% slip. The frequency of rotor e.m.f. will be____________?
A 3-phase induction motor delta connected is carrying too heavy load and one of its fuses blows out. Then the motor______________?
A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor_______________?