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? 120 Volts 480 Volts 60 Volts 30 Volts 120 Volts 480 Volts 60 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 kVA rating of Three-phase transformer with Voltage = 200 V and Current = 100 A will be : 20 kVA 34.64 kVA 75 kVA None of these 20 kVA 34.64 kVA 75 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 : P = VxI P = I²xR All of these P = V²/R P = VxI P = I²xR All of these P = V²/R ANSWER EXPLANATION DOWNLOAD EXAMIANS APP True for DC Circuits.For single pahse ac P = V I CosØ
DGVCL Exam Paper (12-06-2016) Wave trap is used to trap waves of: All of these Higher frequencies entering generator or transformer units Power frequencies None of these All of these Higher frequencies entering generator or transformer units Power frequencies None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Efficiency of a power transformer is of the order of : 0.5 0.98 1 0.25 0.5 0.98 1 0.25 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The following is a Transmission Company: GETCO GERC MGVCL DGVCL GETCO GERC MGVCL DGVCL ANSWER DOWNLOAD EXAMIANS APP
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