Category 21ELE13/23

VTU 1st Year Important Questions | VTU Question Bank

In this post, you will get the Important Questions and Question bank of 1st year of all P Cycle and C cycle Subjects. VTU 1st Year C cycle Important Questions…

Measurement of power by two wattmeter method

4.C] Three phase power consumed by the balanced load is given by 𝑃 = √3𝑉𝐿 𝐼𝐿cos(∅) watts, then show that two wattmeter sufficient to measure three phase power P. Answer:…

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 current supplied is 15 A, what is the power taken by each branch?

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…

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.

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.…

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 voltage and current.

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…

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 the resistor is 96.8 W, and that in the capacitor is negligible. Calculate the resistance and the capacitance.

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…

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.

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.…