DGVCL Exam Paper (12-06-2016) Core type transformers are popular in _____ Low voltage applications All of these High voltage applications None of these Low voltage applications All of these High voltage applications 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: All of these Uploading Downloading Retrieving All of these Uploading Downloading Retrieving ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Where is RAM located? Expansion Board Mother Board All of above External Drive Expansion Board Mother Board All of above External Drive ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A _____ is used to measure the stator % winding temperature of the generator. Pyrometer Resistance thermometer Thermocouple Thermometer Pyrometer Resistance thermometer Thermocouple Thermometer ANSWER DOWNLOAD EXAMIANS APP
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: No effect Current will be too much high Eddy Current and Hysteresis losses will be excessive Transformer may start to smoke and burn No effect Current will be too much high Eddy Current and Hysteresis losses will be excessive 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) Step-down transformer converts high voltage and low current into: How voltage and high current Low voltage and high current None of these High voltage and low current How voltage and high current Low voltage and high current None of these High voltage and low current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In step up votlage,Output votlage > Input votlageOutput current < Input currentIn step down transformerOutput votlage < Input votlageOutput current > Input current.Power and frequency remains almost constant in stepup or stepdown transformer.
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