DGVCL Exam Paper (12-06-2016) True value has been 50 whereas measured value is 40 then the percentage error in the reading will be _____ 0.5 0.3 0.4 0.2 0.5 0.3 0.4 0.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP %error = 100 * (actual - measured )/ actual
DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? Transformer will operate with high efficiency Transformer will operate with low efficiency No effect Transformer may start to smoke and burn Transformer will operate with high efficiency Transformer will operate with low efficiency No effect Transformer may start to smoke and burn ANSWER EXPLANATION DOWNLOAD EXAMIANS APP transformer works on principle of faraday's law of electromagnetic induction. So if D.C supply use, no indction are produced and due to this E.M.F not induced in winding and transfer of electrical energy is not possible.
DGVCL Exam Paper (12-06-2016) A relay used for protection of motors against overload is : Thermal relay Electromagnetic attraction type Impedance relay Buchholz's relay Thermal relay Electromagnetic attraction type Impedance relay Buchholz's relay ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The UGVCL is operative in the _____ Gujarat. Southern Northern Western Central Southern Northern Western Central ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The energy radiated by Sun on a bright Sunny day is approximately: 1 kW/m² 700 W/m² 800 W/m² 2 kW/m² 1 kW/m² 700 W/m² 800 W/m² 2 kW/m² ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The friction losses in Real Transformers are : 0.05 0.5 0.25 0 0.05 0.5 0.25 0 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP As there is no rotating part in transformer, there is no friction and windage loss
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