NETWORK THEORY PART 2

NETWORK THEORY PART 2

12 .In a Voltage source

A. terminal voltage is equal to the source emf

B. terminal voltage cannot exceed the source EMF 

C. terminal voltage is always lower than source EMF

D. terminal voltage is higher than the source EMF

13 . In a  constant voltage source 

A. active and bilateral 

B. Passive and bilateral

C.  active and unilateral 

D. passive and Unilateral

14. Ideal voltage source have 

A. Zero internal resistance

B. Infinite internal resistance

C. Low value of current

D. Large value of emf

15. The superposition theorem is used when the circuit contains 

A.  a single voltage source 

B.  number of voltage sources

C.  passive elements only

D.  none of the above

16. Norton's theorem is ........Thevenin's  theorem 

A. the same as

B.  converse of 

C. none of the above

D.  cannot say

17. In the analysis of  a vaccum  tube circuit we generally use ...........theorem.

A. Superposition theorem 

B. Norton's theorem

C. Reciprocity theorem

D. .Thevenin’s  theorem

18.  Ideal current source have

A.  zero internal resistance 

B. Infinite internal resistance

C.  low value of voltage

D.  large value of current

19. A practical current source is represented by 

A. A resistance in series with an ideal current source

B.  A resistance in parallel with an ideal current source

C. A  resistance in parallel with an ideal voltage source 

D. None  of the above

20.  Norton Theorem is ........ form of an equivalent circuit 

A.  voltage 

B. Current

C. both voltage and current 

D. none of the above

21.  Dependent source maybe

A.  current source or a voltage source 

B. Is  always a voltage source 

C.  Is always a current source 

D.  Neither a  current source nor a voltage  source

22.  In the  analysis of a transistor circuit we usually  use ........... Theorem.

A. Norton's theorem

B.  Thevenin’s  theorem

C. reciprocity  theorem

D. superposition theorem

23. T0 neglect a  voltage source the terminal across the source A.  open circuited 

B. short circuited

C.  replaced by some resistance

D.  replaced by inductor

24. For determining the polarity of the voltage drop across resistor it is necessary to know the 

A. value of resistor

B.  value of current

C.  direction of current flowing through the resistor

D.  value of EMF in the circuit

25. Under the condition of maximum power transfer the efficiency is 

A. 75%

B. 100%

C. 50% 

D. 25%

26.  The maximum power transfer theorem is used in 

A. electronic circuit 

B. power system 

C. home lighting circuit 

D. none of the above

27. Delta/star or star/delta transformation technique is applied to .......... network 

A. one terminal 

B.  Two Terminal 

C. Three  Terminal 

D. of the above

12. B,  13. C, 14.A,  15.B, 16.B,  17.D, 18. B,  19. B,. 20. B,.  21.A,  22. A ,  23. B, 24. C, 25. C,. 26.A,. 27. C.