A. inductance
B. capacitance
C. resistance
D. both A. and B.
0
The double energy transient occur in the____________?
0
A sine wave has a frequency of 50 Hz. Its angular frequency is ________ radian/second.
A. purely inductive circuit
B. R-L circuit
C. R-C circuit
D. R-L-C circuit
0
The form factor is the ratio of_______?
A. 100 n
B. 50 jt
C. 25 JT
D. 5 n
0
The period of a wave is___________?
A. peak value to r.m.s. value
B. r.m.s. value to average value
C. average value to r.m.s. value
D. none of the above
0
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. the same as frequency
B. time required to complete one cycle
C. expressed in amperes
D. none of the above
0
If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is____________?
A. 2.5
B. 5
C. 10
D. 15
0
The voltage of domestic supply is 220V. This figure represents__________?
A. a sinusoid of the same frequency
B. a sinusoid of half the original frequency
C. a sinusoid of double the frequency
D. not a sinusoid
1
A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to__________?
A. mean value
B. r.m.s. value
C. peak value
D. average value
0
If two sine waves of the same frequency have a phase difference of JT radians, then_______?
A. average voltage
B. r.m.s. voltage
C. peak voltage
D. none of the above
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