DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Voltage All of these Current Frequency Voltage All of these Current Frequency ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In transformer voltage and current can be raised or lowered.Frequency remains samePower and Flux remains almost constant.
DGVCL Exam Paper (12-06-2016) Cylindrical type transformer has: All of these Double magnetic circuit Single magnetic circuit None of these All of these Double magnetic circuit Single magnetic circuit None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The registered office of MGVCL is in _____ Valsad Vadodara Ahmedabad Godhra Valsad Vadodara Ahmedabad Godhra ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Company : Registered OffficePGVCL : RajkotMGVCL : VadodaraDGVCL : SuratUGVCL : MehsanaGETCO : VadodaraGUVNL : Vadodara
DGVCL Exam Paper (12-06-2016) What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage: Eddy Current and Hysteresis losses will be excessive Current will be too much high No effect Transformer may start to smoke and burn Eddy Current and Hysteresis losses will be excessive Current will be too much high No effect Transformer may start to smoke and burn ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Core loss of transformer = Hysteresis loss + eddy current lossHysteresis loss prpotional to feddy current loss prpotional to f².
DGVCL Exam Paper (12-06-2016) Wave trap is used to trap waves of: Higher frequencies entering generator or transformer units Power frequencies All of these None of these Higher frequencies entering generator or transformer units Power frequencies All of these None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The process of a computer receiving information from a server via Internet is known as: Retrieving Downloading All of these Uploading Retrieving Downloading All of these Uploading ANSWER DOWNLOAD EXAMIANS APP
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