Time constant of an inductive circuit__________?
Capacitive reactance is more when_______?
For a frequency of 200 Hz, the time period will be__________?
Capacitors for power factor correction are rated in_________?
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of_______degrees?
Form Factor is the ratio of__________?
For a sine wave with peak value Emax _______ 8.30. the average value is?
For a sine wave with peak value Imax the r.m.s. value is_______?
Form factor for a sine wave is________?
The r.m.s. value and mean value is the same in the case of__________?
For the same peak value, which of the following wave has the least mean value ?
The power consumed in a circuit element will be least when the phase difference between the current and voltage is________?
Two waves of the same frequency have opposite phase when the phase angle between them is_________?
If two sine waves of the same frequency have a phase difference of JT radians, then_______?
A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to__________?
The voltage of domestic supply is 220V. This figure represents__________?
If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is__________?
The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_______ohms?
The period of a wave is__________?
The form factor is the ratio of_______?
A sine wave has a frequency of 50 Hz. Its angular frequency is ________ radian/second.
The double energy transient occur in the__________?
Power factor of the following circuit will be unity
Power factor of an inductive circuit is usually improved by connecting capacitor to it in__________?
All the rules and laws of D.C. circuit also apply to A.C. circuit containing__________?
The best place to install a capacitor is__________?
Power factor of an electrical circuit is equal to__________?
In a series resonant circuit, the impedance of the circuit is__________?
The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that
For the same peak value which of the following wave will ‘have the highest r.m.s. value?
The power consumed in a circuit element will be least when the phase difference between the current and voltage is__________?
The peak value of a sine wave is 200 V. Its average value is__________?
The period of a sine wave is _____ seconds. Its frequency is

Poor power factor________?

A. reduces load handling capability of electrical system
B. results in more power losses in the electrical system
C. overloads alternators, transformers and distribution lines
D. results in more voltage drop in the line
E. results in all above

Correct Answer: results in all above ✔

Last Updated: December 11, 2018