For which of the following ratings of the transformer differential protection is recommended ?

A. Radiation
B. Convection
C. Conduction
D. All of the above

A. current wave only
B. voltage wave only
C. Both (A) and (B)
D. power factor wave only

A. inrush protection
B. distance protection
C. time graded and current graded over current protection
D. both (B) and (C)
E. none of the above

A. high temperature
B. increase of mean free path
C. increasing field strength
D. all of the above

A. single phase motors only
B. two phase motors only
C. two single phase motors running in parallel
D. three phase motors

A. compensate for line inductive reactance
B. compensate for line capacitive reactance
C. improve line voltage
D. none of the above