Two waves of the same frequency have opposite phase when the phase angle between them is_________?
Two waves of the same frequency have opposite phase when the phase angle between them is_________? A. 360°B. 180° C. 90° D. 0°
Two waves of the same frequency have opposite phase when the phase angle between them is_________? A. 360°B. 180° C. 90° D. 0°
If two sine waves of the same frequency have a phase difference of JT radians, then_______? A. both will reach their minimum values at the same instant B. both will reach their maximum values at the same instantC. when one…
A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to__________? A. average voltageB. r.m.s. voltage C. peak voltage D. none of the above
The voltage of domestic supply is 220V. This figure represents__________? A. mean value B. r.m.s. value C. peak value D. average value
If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is____________? A. a sinusoid of the same frequency B. a sinusoid of half the original frequency C. a sinusoid of double the…
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? A. 2.5 B. 5C. 10 D. 15
The period of a wave is___________? A. the same as frequencyB. time required to complete one cycle C. expressed in amperes D. none of the above
The form factor is the ratio of_______? A. peak value to r.m.s. valueB. r.m.s. value to average value C. average value to r.m.s. value D. none of the above
A sine wave has a frequency of 50 Hz. Its angular frequency is ________ radian/second. A. 100 n B. 50 jt C. 25 JT D. 5 n
The double energy transient occur in the____________? A. purely inductive circuit B. R-L circuit C. R-C circuitD. R-L-C circuit