A) lightning B) switching C) resonance D) any of the above. Ans : (D)
A) liquid form in cylinders B) gas cylinders C) solid form in boxes D) air cylinders. Ans : (A)
A) It is non-toxic gas B) It has dark yellow colour C) It is non-inflammable D) It has density 5 times that of air at 20o C. Ans :(B)
A) air cooled, air cored B) oil immersed magnetically shielded C) oil immersed non-magnetically shielded D) any of the above. Ans : (D)
A) EHV and UHV system. B) Unbalanced system C) 11 kV system D) Low voltage systems. Ans : (A)
A) closing of unchanged line B) load shedding of receiving end of line C) switching of magnetizing current D) any of the above. Ans : (D)
A) Horn gap B) Surge diverters C) Lightning arresters D) Any of the above. Ans : (D)
A) above 66 kV B) between 3.3 kV to 11 kV C) upto 660 V D) below 220 V. Ans : (B)
A) below 660 V B) bellow 115 V C) above 220 kV D) above 11 kV. Ans : (A)
A) lightning B) switching C) arcing grounds D) any of the above. Ans : (D)