- (A) recovery
- (B) surge
- (C) operating
- (D) arc
- (E) none of the above
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- (A) merz price percentage differential protection
- (B) mho and ohm relays
- (C) horn gaps and temperature relays
- (D) earth fault and positive sequence relays
- (A) power
- (B) current
- (C) voltage wave
- (D) all of the above
- (A) over currents
- (B) short duty
- (C) intermittant duty
- (D) repeated duty
- (A) transient state of short-circuit current
- (B) sub-transient state of short-circuit current
- (C) steady state of short-circuit current
- (D) after
- (A) few turns of thin wire
- (B) few turns of thick wire
- (C) many turns of thin wire
- (D) many turns of thick wire
- (A) current carrying contacts called electrodes
- (B) arc extinguishers
- (C) circuits to break the system
- (D) transformers to isolate the two systems
- (E) any of the above
- (A) current carrying contacts called electrodes
- (B) arc extinguishers
- (C) circuits to break the system
- (D) transformers to isolate the two systems
- (E) any of the above
- (A) have low contact resistance
- (B) be clean and smooth
- (C) be of sufficient size and proper shape
- (D) have all above properties
- (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
