Networks Analysis and Synthesis

1

A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled, then the voltage across each resistor is  

A. half
B. doubled
C. increase by 4 times
D. no change

2

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 applied voltage

3

A network has two sources of different frequencies. The only method of analysis which can be used to find current and voltages of different branches is the use of

A. Kirchoff's laws
B. Superposition theorem
C. Thevenin's theorem
D. Tellegen's theorem

4

Open-circuit voltage is the potential difference between two point when the impedance between these points is

A. zero
B. infinity
C. capacitive
D. reactive

5

If H(s) is positive real, 1/H(s)

A. is positive real
B. is not positive real
C. may or may not be positive real
D. must possess some other properties also if it is to be positive real