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A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?
A three-winding transformer is connected to an AC source with 50 V rms as shown in the following figure. Voltages induced in the secondary windings are 2 V rms and 8 V rms. The output rms voltage V0 is,
In a parallel RL circuit, there are 3 A rms in the resistive branch and 3 A rms in the inductive branch. The total rms current is
For a direct current, the rms current is ________ the mean current.
In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
For an SCR the average & rms values of current are I/4 & I/2 respectively. Calculate the average on-state current rating (ITAV). Take maximum RMS on-state current = 35 A.
When an electric current coil of a wattmeter is connected to the electric current path R and the voltage coil is connected between the electric current R path and the neutral side of the balanced three phase supply, it shows 10 kW. The line voltage along the phase sequence RYB is 400 V. The current drawn by the current path is 54 A. What is the new reading of the wattmeter if the voltage coil is connected between the lines B and the Y paths, even if the electric current coil is continuously present in the line R?
vg সম্পর্কে লেখা যায়-i. Vg (rms) ∞ Mii. Vg (rms) ∞ Piii. vg (rms) ∞ Tনিচের কোনটি সঠিক?
A cosine wave voltage signal has a 10V RMS value and 60Hz frequency. Also at time, t=0, the value of the voltage signal is equal to its RMS value. Which of the following is the correct mathematical representation of the voltage signal?
Calculate the resistance in the circuit if the rms voltage is 20V and the rms current is 2A.