DGVCL Exam Paper (12-06-2016) Increasing the number of turns of wire on the secondary of a transformer will Decrease the secondary current Increase the primary current Increase the secondary current Have no effect on the secondary current Decrease the secondary current Increase the primary current Increase the secondary current Have no effect on the secondary current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP transformer ratio K : N₂/N₁=V₂/V₁=I₁/I₂
DGVCL Exam Paper (12-06-2016) The process of a computer receiving information from a server via Internet is known as: Downloading Uploading All of these Retrieving Downloading Uploading All of these Retrieving ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Frequency All of these Current Voltage Frequency All of these Current Voltage 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) Earthing switch is used for? Protection of equipment from ground faults Discharging residual energies Measuring of safety voltage All of these Protection of equipment from ground faults Discharging residual energies Measuring of safety voltage All of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The following formula is correct: All of these Load factor = Average load for a period + Peak load for the same period Load facto r= Average load for a period/Peak load for the same period Load factor = Average load for a period x Peak load for the same period All of these Load factor = Average load for a period + Peak load for the same period Load facto r= Average load for a period/Peak load for the same period Load factor = Average load for a period x Peak load for the same period ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The transformer works on the principle of: Mutual capacitance None of these Mutual induction All of these Mutual capacitance None of these Mutual induction All of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Transformer is static device.two or more stationary electrical circuit mutually linked by magnetic circuit.assumptions of ideal transformer:1. there are no losses.2. whole magnetic flux constant no leakage.3. permeability of core is infinite.
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