Power factor of the following circuit will be unity
Power factor of the following circuit will be unity A. inductance B. capacitanceC. resistance D. both A. and B.
Power factor of the following circuit will be unity A. inductance B. capacitanceC. resistance D. both A. and B.
Power factor of an inductive circuit is usually improved by connecting capacitor to it in____________? A. parallel B. series C. either A. or (b) D. none of the above
All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________? A. capacitance only B. inductance onlyC. resistance only D. all above
The best place to install a capacitor is___________? A. very near to inductive loadB. across the terminals of the inductive load C. far away from the inductive load D. any where
Power factor of an electrical circuit is equal to____________? A. R/Z B. cosine of phase angle difference be-tween current and voltage C. kW/kVA D. ratio of useful current to total cur¬rent Iw/IE. all of these
In a series resonant circuit, the impedance of the circuit is___________? A. minimum B. maximum C. zero D. none of the above
The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that A. both waves must have same frequency B. both waves must have identical peak values C. both waves must…
For the same peak value which of the following wave will ‘have the highest r.m.s. value? A. square wave B. half wave rectified sine wave C. triangular wave D. sine wave
The power consumed in a circuit element will be least when the phase difference between the current and voltage is__________? A. 180″B. 90° C. 60° D. 0°
The peak value of a sine wave is 200 V. Its average value is___________?A. 127.4 V B. 141.4 V C. 282.8 V D. 200V