DGVCL Exam Paper (12-06-2016) The kVA rating of Three-phase transformer with Voltage = 200 V and Current = 100 A will be : 75 kVA 20 kVA 34.64 kVA None of these 75 kVA 20 kVA 34.64 kVA None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For three phase,VA = √3 V IFor single phase, kVA = V I
DGVCL Exam Paper (12-06-2016) The following is correct : All of these P = V²/R P = I²xR P = VxI All of these P = V²/R P = I²xR P = VxI ANSWER EXPLANATION DOWNLOAD EXAMIANS APP True for DC Circuits.For single pahse ac P = V I CosØ
DGVCL Exam Paper (12-06-2016) A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary? 480 Volts 60 Volts 120 Volts 30 Volts 480 Volts 60 Volts 120 Volts 30 Volts ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For transformer, V2/V1 = N2/N1V2/120 = 50/200V2 = 30 V
DGVCL Exam Paper (12-06-2016) The following is/are the characteristics of SF₆ circuit breakers: Short break time of 2 to 2.5 cycles None of these It does not need an auxiliary breaking chamber All of these Short break time of 2 to 2.5 cycles None of these It does not need an auxiliary breaking chamber All of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A Transformer _____ Steps up or down AC Voltages & Current Changes DC to AC Steps up or down DC Voltages & Current Changes AC to DC Steps up or down AC Voltages & Current Changes DC to AC Steps up or down DC Voltages & Current Changes AC to DC ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Taskbar is used for Navigation program Switching between program All of above Start a program Navigation program Switching between program All of above Start a program ANSWER DOWNLOAD EXAMIANS APP
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