4.B] Two circuits, the impedances of which are given by 𝑍1 = 10 + 𝑗15 Ω and 𝑍2 = 6 − 𝑗8 Ω, are connected in parallel. If the total…
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 ∅ with respect to voltage.…
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 of…
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 in…
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 ∅ with respect to voltage.…
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 Weber’s. Thearmature resistance is…
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 C…
5 c]For the single phase transformer obtain an expression for EMF induced in either primary side or secondary side. Solution : N1 – be the no. of turns of the…
5 b] A shunt generator delivers 50 KW at 250 V and 400 rpm. The armature and shunt field resistances are 0.02 Ω and 50 Ω respectively. Calculate the speed…
