DGVCL Exam Paper (12-06-2016) The following formula is correct: Load factor = Average load for a period x Peak load for the same period All of these Load facto r= Average load for a period/Peak load for the same period Load factor = 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 facto r= Average load for a period/Peak load for the same period Load factor = Average load for a period + Peak load for the same period ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Voltage All of these Frequency Current Voltage All of these Frequency Current 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) The following is correct : P = I²xR All of these P = V²/R P = VxI P = I²xR All of these P = V²/R P = VxI ANSWER EXPLANATION DOWNLOAD EXAMIANS APP True for DC Circuits.For single pahse ac P = V I CosØ
DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? Transformer will operate with low efficiency No effect Transformer will operate with high efficiency Transformer may start to smoke and burn Transformer will operate with low efficiency No effect Transformer will operate with high efficiency 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) _____ electric power is the most common method used by electrical grids to transfer power Three-phase One-phase None of these Two-phase Three-phase One-phase None of these Two-phase ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Taskbar is used for All of above Switching between program Start a program Navigation program All of above Switching between program Start a program Navigation program ANSWER DOWNLOAD EXAMIANS APP
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