DGVCL Exam Paper (11-12-2011) The main criterion for the design of a distributor is Voltage drop Radio interference Temperature rise Corona loss Voltage drop Radio interference Temperature rise Corona loss ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Kilobyte, megabyte and gigabyte are measuring units used in a computer. How many megabytes make one gigabyte? 1042 1204 1024 1000 1042 1204 1024 1000 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The efficiency of a transformer at full load, 0.8 p.f. lag is 90%. Its efficiency at full load, 0.8 p.f. lead will be 80 % Less than 90% 90 % More than 90% 80 % Less than 90% 90 % More than 90% ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Efficiency= output power/input powerefficiency = (v*i*cosφ)/((v*i*cosφ)+(x² Pc)+(Pi)) x=fractional part of full load
DGVCL Exam Paper (11-12-2011) The purpose of interpoles in DC machines is to nullify Both the cross-magnetizing mmf and the reactance voltage The cross-magnetizing effect of armature mmf The demagnetizing effect of armature mmf The reactance voltage Both the cross-magnetizing mmf and the reactance voltage The cross-magnetizing effect of armature mmf The demagnetizing effect of armature mmf The reactance voltage ANSWER EXPLANATION DOWNLOAD EXAMIANS APP interpoles is widely use to improve commutationplace between main poles fitted to yokefunctions:to neutralize armature mmf in commutating zoneto produce some flux in commutating zone
DGVCL Exam Paper (11-12-2011) The mutual inductance between two unity coupled coils of 9 H and 4 H is 13 H 36 H 2.2 H 6 H 13 H 36 H 2.2 H 6 H ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) What type of insulator is used if the direction of the transmission line is to be changed? Shakle type Pin type Suspebsion type Strain type Shakle type Pin type Suspebsion type Strain type ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS