GETCO Exam Paper (30-11-2008) When a star delta transformer bank of three single phase transformers is to be used for step down transformation with line voltages of 23000 V and 2300 V, the ratio of transformation will be 12.1:1 17.2:1 10.0:1 5.8:1 12.1:1 17.2:1 10.0:1 5.8:1 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Transmission efficiency increases as voltage increases but power factor decreases voltage decreases but power factor increases voltage and power factor both increase voltage and power factor both decrease voltage increases but power factor decreases voltage decreases but power factor increases voltage and power factor both increase voltage and power factor both decrease ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The disadvantage of transmission lines as compared to cables is exposure to atmosphere hazards like smoke, ice, etc. exposure to lightening All of these inductive interference between power communication circuits exposure to atmosphere hazards like smoke, ice, etc. exposure to lightening All of these inductive interference between power communication circuits ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Transient stability of a power system depends on the strength of transmission network the short circuit ratio of generating units fault-clearing time All of these the strength of transmission network the short circuit ratio of generating units fault-clearing time All of these ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Burden of the relay is _____ rating of relay watt current voltage volt-amp. watt current voltage volt-amp. ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The number of pilot wires required for protecting 3-phase transmission lines using Translay System of protection is 2 3 4 6 2 3 4 6 ANSWER DOWNLOAD EXAMIANS APP
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