DGVCL Exam Paper (12-06-2016) A relay used for protection of motors against overload is : Impedance relay Thermal relay Electromagnetic attraction type Buchholz's relay Impedance relay Thermal relay Electromagnetic attraction type Buchholz's relay ANSWER DOWNLOAD EXAMIANS APP
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 30 Volts 120 Volts 480 Volts 60 Volts 30 Volts 120 Volts ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For transformer, V2/V1 = N2/N1V2/120 = 50/200V2 = 30 V
DGVCL Exam Paper (12-06-2016) Increasing the number of turns of wire on the secondary of a transformer will Increase the primary current Have no effect on the secondary current Increase the secondary current Decrease the secondary current Increase the primary current Have no effect on the secondary current Increase the secondary current Decrease the secondary current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP transformer ratio K : N₂/N₁=V₂/V₁=I₁/I₂
DGVCL Exam Paper (12-06-2016) For 11 kV line the inductance per km per phase will be of the order of: 0.1 mH 1 H 1 mH 0.1 H 0.1 mH 1 H 1 mH 0.1 H ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) In fuel cell the _____ energy is converted into electrical energy. Sound Heat Chemical Mechanical Sound Heat Chemical Mechanical ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The acting contacts for a circuit breakers are made of : Hard-pressed carbon Stainless Steel Porcelain Copper Tungsten alloy Hard-pressed carbon Stainless Steel Porcelain Copper Tungsten alloy ANSWER DOWNLOAD EXAMIANS APP
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