211. Which of the following theorems enables a number of voltage (or current) source to be combined directly into a single voltage (or current) source?

A. Superposition theorem

B. Compensation theorem

C. Millman 's theorem

D. Thevenin's theorem

212. To neglect a current source, the terminals across the source are

A. replaced by source resistance

B. replaced by capacitance

C. short-circuited

D. open-circuited

213. The frequency at which maximum voltage accurs across the indictance in R-L-C series circuits is

A. ZL ---- 13 ? j9

B.13 + j9

C. LC ? C2 R2?313

D.k---9 +j13

214. The frequency at which maximum voltage occurs acrossthe capacitance in R-L-C series circuits is given by

A. 20W

B. 50 W

C. 100W

D. 200 W

215. In series as well as parallel resonant circuits, increasing the value of resistance would lead to

A. decrease in bandwidth of both the circuits

B. increase in bandwidth of both the circuits

C. decrease in bandwidth in series circuit and increase in parallel circuit

D. increase in bandwidth in series circuit and decrease in parallel circuit

216. For a series R-L-C circuit tuned at resonant frequency which of the following statements is correct?

A. The voltage across inductance is greater than applied voltage

B. The voltage across capacitance is greater than applied voltage

C. The voltage across both inductance and capacitance is greater than applied voltage

D. The voltage across both inductance and capacitance is less than the applied voltage

217. A coil with large distributed capacitance has a

A. high resonant frequency

B. low resonant frequency

C. low quality factor

D. low resistance

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