Measurement of power by two wattmeter method
4.C] Three phase power consumed by the balanced load is given by π = β3ππΏ πΌπΏcos(β ) watts, then show that two wattmeter sufficient to measure three phase power P. Answer:β¦
4.C] Three phase power consumed by the balanced load is given by π = β3ππΏ πΌπΏcos(β ) watts, then show that two wattmeter sufficient to measure three phase power P. Answer:β¦
4.B] Two circuits, the impedances of which are given by π1 = 10 + π15 β¦ and π2 = 6 β π8 β¦, are connected in parallel. If the totalβ¦
4.A] With the help of a phasor diagram, show that the current drawn by the R-C series circuit, leads the applied voltage by an angle β with respect to voltage.β¦
3.C] A three single phase balanced load connected in three phase three wires star form, with the help of phasor diagram, obtain the relationship between line and phase quantities ofβ¦
3.B] A voltage of 125 V at 60 Hz is applied across a non-inductive resistor connected in series with a capacitor. The current is 2.2 A. The power loss inβ¦
3.A] With the help of a phasor diagram, show that the current drawn by the R-L series circuit, lags the applied voltage by an angle β with respect to voltage.β¦
6 c] To operate the transformer in maximum efficiency always derive at what condition this can be achieved.
6 b] A 4-pole, 500V, shunt motor has 720 wave-connected conductors on its armature.The full-load armature current is 60 A, and the flux per pole 0.03 Weberβs. Thearmature resistance isβ¦
6 a] A dc motor running with a speed of N rpm obtain an expression for EMF induced in the armature winding. Solution : When the Armature of D Cβ¦
5 c]For the single phase transformer obtain an expression for EMF induced in either primary side or secondary side. Solution : N1 β be the no. of turns of theβ¦