A certain network N feeds a load resistance R as shown in the Fig.(a).It consumes a power of PW. If an identical network is added as shown in Fig.(b) then power consumed by R will be

1.  less than P

2.  equal to P

3.  between P and 4P

4.  more than 4P

4

between P and 4P

Explanation :
No Explanation available for this question

The capacitor in the circuit as shown above is initially charged to 12 V with S1 and S2 open . S1 is closed at t = 0 while S2 is closed at t = 3. Waveform of the capacitor current is represented by

1.

2.

3.

4.

5.  49 yrs

6.  52 yrs

7.  55 yrs

8.  56 yrs

9.  58 yrs

9

49 yrs

Explanation :
No Explanation available for this question

An impedance match is desired at the 1 – 1 port of the two – port network shown in the given figure . The match will be obtained when zg equals

1.  z1 + z3

2.  z1 + [z3 (z2 + zL)/ z2 + z3 + zL ]

3.  z1(z2 + z3) / z1 + z2 + z3

4.  None of these

4

z1 + [z3 (z2 + zL)/ z2 + z3 + zL ]

Explanation :
No Explanation available for this question

Initially , the circuit shown in the given figure was relaxed . If switch is closed at t = 0,then values of i(0+),di/dt(0+) and2i/dt2(0+) will respectively be

1.  0 , 10 and -100

2.  0 , 10 and 100

3.  10 , 100 and 0

4.  100 , 0 and 10

4

0 , 10 and -100

Explanation :
No Explanation available for this question

V – I relation for the networks shown in the given box is V = 4I – 9 .If now a resister R = 2Ω is connected across it , then value of I will be

1.  -4.5 A

2.  -1.5 A

3.  1.5 A

4.  4.5 A

4

1.5 A

Explanation :
No Explanation available for this question

For the given network , [ y ] is equal to

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

In respect of the 2 –port network shown in the given figure , admittance parameters are : Y11 = 8 mho , Y12 = Y21 = - 6 mho and Y22 = 6 mho. The values of YA , YB and YC ( in units of mho ) will be respectively

1.  2 , 6 and -6

2.  2 , 6 and 0

3.   2 , 0 and 6

4.  2 , 6 and 8

4

2 , 0 and 6

Explanation :
No Explanation available for this question

The impedance matrices of two , two –port networks are given by and . If these two networks are connected in series , then impedance matrix of the resulting two – port network will be

1.

2.

3.

4.  Indeterminate

5.  40

6.  45

7.  60

8.  90

9.   Cannot be determined

9

40

Explanation :
No Explanation available for this question

T – parameters of a 2 – port network are . If such two 2 – port network are cascaded , then z – parameter for the cascaded network is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  s

2.  1/s

3.  s + 1

4.  1 + 1/s

4