A. depends upon the magnitude of R
B. depends upon the magnitude of L
C. depends upon the magnitude of C
D. depends upon the magnitude of R, Land C
Related Mcqs:
- In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of__________?
A. R only
B. L only
C. C only
D. LorC
E. R,LorC - The power factor at resonance in R-L- C parallel circuit is________?
A. zero
B. 0.08 lagging
C. 0.8 leading
D. unity - The series and parallel resonance on L-C circuit’ differs in that_________?
A. series resistance needs a low-resistance source for sharp rise in current
B. series resonance needs a high-resistance source for sharp increase in current
C. parallel resonance needs a low-resistance source for a sharp in¬crease in impedance
D. parallel resonance needs a low-resistance source for a sharp rise in line current - The purpose of a parallel circuit resonance is to magnify________?
A. current
B. voltage
C. power
D. frequency - A parallel AC. circuit in resonance will__________?
A. have a high voltage developed across each inductive and capacitive section
B. have a high impedance
C. act like a resistor of low value
D. have current in each section equal to the line current - The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces__________?
A. the more heat than produced by A.C. when flowing through the same circuit
B. the same heat as produced by A.C. when flowing through the same circuit
C. the less heat than produced by A.C. flowing through the same circuit
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 have zero value at the same time
D. none of the above - In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will__________?
A. be reduced by half
B. be doubled
C. be four times at high
D. be reduced to one fourth - In a parallel R-C circuit, the current always________the applied voltage?
A. lags
B. leads
C. remains in phase with
D. none of the above - The safest value of current the human body can carry for more than 3 second is_________?
A. 4 mA
B. 9 mA
C. 15 mA
D. 25 mA
