A. overload
B. short-circuit and overload
C. open circuit, short-circuit and overload
D. none of the above
A. current during abnormal condition
B. voltage during abnormal condition
C. constantly the electrical quantities which differ during normal and abnormal conditions
D. none of the above
A. Water
B. Oil
C. Air
D. SF6
A. no ageing effect
B. high speed of operation
C. high rupturing capacity
D. all of the above
A. Radiation
B. Convection
C. Conduction
D. All of the above
A. inversely proportional to the current
B. inversely proportional to the square of the current
C. proportional to the current
D. proportional to square of the current
A. transient state of short-circuit current
B. sub-transient state of short-circuit current
C. steady state of short-circuit current
D. after D.C. component has ceased