# In the circuit shown in figure IB = 10 microamperes. The value of resistance Rin is

1.  1 kilo-ohm

2.  10 kilo-ohm

3.  100 kilo-ohm

4.  1 mega-ohm

4

100 kilo-ohm

Explanation :
No Explanation available for this question

# It is required toidetermine the current through Z by Thevenin’s theorem. The open circuit impedance measured between A and B is

1.  2 R.

2.  R/2 (i-j)

3.  R/2 (i-j)

4.  R447

4

Explanation :
No Explanation available for this question

# Critical frequency is the

1.  Lowest frequency that is reflected by the ionosphere

2.  Highest frequency that is reflected by the ionosphere at vertical distance

3.  Lowest frequency by which communi-cation is possible between two given points

4.  None of the above

4

Highest frequency that is reflected by the ionosphere at vertical distance

Explanation :
No Explanation available for this question

# Critical frequency is the

1.  Lowest frequency that is reflected by the ionosphere

2.  Highest frequency that is reflected by the ionosphere at vertical distance

3.  Lowest frequency by which communi-cation is possible between two given points

4.  None of the above

4

Highest frequency that is reflected by the ionosphere at vertical distance

Explanation :
No Explanation available for this question

# The circuit shown has i(t) = 10 sin (120πt). The power (time average power) dissipated in R is

1.  25 watts

2.  100 watts

3.  watts

4.  50 watts

4

25 watts

Explanation :
No Explanation available for this question

# The impedance inversion may be objected with

1.  A short-circuited stub

2.  An open –circuited stub

3.  A half wave line

4.  A quarter – wave line

4

A quarter – wave line

Explanation :
No Explanation available for this question

# The average value of the voltage waveform shown below is

1.  0.632 K

2.  0. 368 K

3.  2.71 K

4.  None of these

4

0.632 K

Explanation :
No Explanation available for this question

# From the graphs drawn below, which of the following is non-planer

1.  Fig.(1) and Fig. (2)

2.  Fig. (2) only

3.  Fig. (4) only

4.  Both Fig. (3) and Fig. (4)

4

Fig. (4) only

Explanation :
No Explanation available for this question

# The Laplace transform of the waveform shown below will be

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  2

2.  4

3.  8

4.  16

4