# The d.c. gain of a system represented by the transfer function 10/(s+1)(s+2) is

1.  1

2.  2

3.  5

4.  10

4

5

Explanation :
No Explanation available for this question

# For converting a transmission line into a radiating antenna for coupling to free space, the essential condition is that

1.  The line be open circuited

2.  The line be short circuited

3.  The receiving end be bent outwardly at right angles

4.  None of these

4

The receiving end be bent outwardly at right angles

Explanation :
No Explanation available for this question

# The transfer function of a linear time-invariant system represented by the vector-matrix differential equation X = Ax + Bu and the output Y = CX + Du is given by

1.  C (Si-A)-B

2.  C (Si-A)-1B + D

3.  B (Si-A)-1C

4.  B (Si-A)-1C + d

4

C (Si-A)-1B + D

Explanation :
No Explanation available for this question

# Distance between adjacent maxima and minima of a standing wave on a transmission line as

1.

2.  λ/2

3.  λ/4

4.  None of these

4

λ/4

Explanation :
No Explanation available for this question

# A two terminal black box contains one of the R.L.C. elements. The black box is connected to a 220 volts A.C. supply. The current through the source is I. When a capacitor of 0.1 F is inserted in the series between the source and the box, the current through the source is 2I. the element is

1.  a resistance

2.  an inductance

3.  a capacitance of 0.5 F

4.  It is not possible to determine the element

4

an inductance

Explanation :
No Explanation available for this question

# Primary constants of a transmission line are

1.  R, L, G and C

2.  L and C

3.  c.β,α

4.  L, C and γ

4

R, L, G and C

Explanation :
No Explanation available for this question

# The Thevenin resistance of the network comprising of a resistor of a 1 in series with a parallel combination of a current source of 2I amperes and a resister of 1? through which 1 ampere of current flows is

1.  2

2.  0.5

3.  4/3

4.  1

4

4/3

Explanation :
No Explanation available for this question

# A transmission line with R = G = 0 has a characteristic impedance that is

1.  Purely reactive

2.  Purely resistance

3.  Purely  inductive

4.  Purely cap active

4

Purely resistance

Explanation :
No Explanation available for this question

# The final value of is

1.  infinity

2.  2

3.  zero

4.  1

4

1

Explanation :
No Explanation available for this question

1.  Z0 = √Z1. Z2

2.   Z0 = Z1. Z2

3.

4.

4