Sobre a atuação da psicologia, pode-se afirmar que:

Sobre a psicologia, assinale a alternativa correta:

Two circuits, the impedances of which are given by Z1=15 + j12 ohms and Z2=8 − j5 ohms are connected in parallel. If the potential difference across one of the impedance is 250 + j0 V, the total current is_______A

Power consumed by a balanced 3-phase, 3-wire load is measured by the two- wattmeter method. The first wattmeter reads twice that of the second. Then the load impedance angle in radians is

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A pure resistance of 50 ohms is in series with a pure capacitance of 100 microfarads. The series combination is connected across 100V, 50 Hz supply. The impedance of the circuit is_________ Ω.

A balanced 3 phase star connected load of 12800W takes a leading current of 23 A when connected across a 3 phase, 400 V, 50 Hz supply. The resistance per phase is

How many of the following matrices are in reduced row echelon form?

A resistor and a capacitor are connected in series with a variable inductor. When the circuit is connected to a 240-V, 50-Hz supply, the maximum current given by varying the inductance is 0.5A. At this current, the voltage across the capacitor is 250 V. The values of inductance and resistance are

A current of 5 A flows through a non-inductive resistance in series with a choking coil when supplied at 250 V, 50 Hz. If the voltage across the non-inductive resistance is 125 V and the voltage across the coil 200 V, The resistance of the coil would be