A. 20 Hz
B. 30 Hz
C. 40 Hz
D. 50 Hz
1
The peak value of a sine wave is 200 V. Its average value is___________?
5
The power consumed in a circuit element will be least when the phase difference between the current and voltage is__________?
A. 127.4 V
B. 141.4 V
C. 282.8 V
D. 200V
Updated by: Ihtisham Ul Haq
0
For the same peak value which of the following wave will ‘have the highest r.m.s. value?
A. 180″
B. 90°
C. 60°
D. 0°
0
The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that
A. square wave
B. half wave rectified sine wave
C. triangular wave
D. sine wave
0
In a series resonant circuit, the impedance of the circuit is___________?
A. both waves must have same frequency
B. both waves must have identical peak values
C. both waves must have zero value at the same time
D. none of the above
0
Power factor of an electrical circuit is equal to____________?
A. minimum
B. maximum
C. zero
D. none of the above
0
The best place to install a capacitor is___________?
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/I
E. all of these
0
All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________?
A. very near to inductive load
B. across the terminals of the inductive load
C. far away from the inductive load
D. any where