A radio wave is incident on a layer of ionosphere at an angle ofwith the vertical. If the critical frequency is, 1.2 MHz, the maximum usable frequency is

The minimal function that can detect a "divisible byBCD code digit (representation D₈D₄D₂D₁) is given by

The electric field of uniform plane wave is given by E =sin (2 p x 10⁸t- pz) _x +cos (2 p x 10⁸t - pz) _y. Find phase velocity

A lossless transmission line iscm long and operates at a frequency ofMHz. Inductance and capacitances present in a line are 0.5 μH/m andpF/m. Phase constant and phase velocity are respectively.

The antenna current of an AM broad cast transmitter, modulated to a depth ofby an audio sine wave isamperes. It increased toampere as a result of simultaneous modulation by another sine wave. The modulation index due to this second sine wave is :

The region between a pin of parallel perfectly conducting planes of infinite extent is y and z directions is partially filled with a dielectric as shown below.

AGHz TE₁₀ wave is incident on the air-dielectric interface. The value of reflection coefficient at the interface is

Hari (H), Gita (G), Irfan (I) and Saira (S) are sibiligs (i.e. brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than 3 years. Given the following facts:
(i) Hari's age + Gita's age > Irfan's age + Saira's age.
(ii) The age difference between Gita and Saira is 1 year. However, Gita is not the oldest and Saira is not the youngest.
(iii) There are not twins.
In what order were they born (Oldest first)?

A control system is as shown in given figure The maximum value of gain K for which the system is stable is

Fourier transform of signal obtained after taking difference between step function and its reverse version is given as __________ .

Two coils X ofturns and Y ofturns are placed such thatof the flux produced by coil X links coil Y. A current of 1 A in coil X produces 0.1 wb flux. The mutual inductance between coils is

An air-filled rectangular waveguide has dimensions 8cm x 10cm . The group velocity is

In the circuit s closed for a long time and steady state is reached. s is opened at t = 0⁺ Determine current through resistor.

The probability density function of a random variable x is as shown.

The mean of the distribution is:

Consider the sequence x(n) whose fourier transform X(e^jω) is depicted for - p ≤ ω ≤ p as shown in figure

1. x(n) is periodic
2. Real
3. Even
4. Finite energy

The region between a pin of parallel perfectly conducting planes of infinite extent is y and z directions is partially filled with a dielectric as shown below.

AGHz TE₁₀ wave is incident on the air-dielectric interface. The value of reflection coefficient at the interface is

In a infinite ladder circuit as shown above each resistance of r Ω then find R_AB

Consider the circuit shown below of 2 : 1 MUX is given by the function g = ac + bc

Then f is :

In a synchro error detector, the output voltage is proportional to [ω(t)]ⁿ, where ω(t) is the rotor velocity and n equals :

The electric field of uniform plane wave is given by E =sin (2 p x 10⁸t- pz) _x +cos (2 p x 10⁸t - pz) _y. Find phase velocity

The following Variable Entered Map (VEM) represents which of the following function:

Two coils X ofturns and Y ofturns are placed such thatof the flux produced by coil X links coil Y. A current of 1 A in coil X produces 0.1 wb flux. The mutual inductance between coils is

Hari (H), Gita (G), Irfan (I) and Saira (S) are sibiligs (i.e. brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than 3 years. Given the following facts:
(i) Hari's age + Gita's age > Irfan's age + Saira's age.
(ii) The age difference between Gita and Saira is 1 year. However, Gita is not the oldest and Saira is not the youngest.
(iii) There are not twins.
In what order were they born (Oldest first)?

A control system is as shown in given figure The maximum value of gain K for which the system is stable is

In the circuit s closed for a long time and steady state is reached. s is opened at t = 0⁺ Determine current through resistor.

The probability density function of a random variable x is as shown.

The mean of the distribution is:

In a synchro error detector, the output voltage is proportional to [ω(t)]ⁿ, where ω(t) is the rotor velocity and n equals :

The region between a pin of parallel perfectly conducting planes of infinite extent is y and z directions is partially filled with a dielectric as shown below.

AGHz TE₁₀ wave is incident on the air-dielectric interface. The value of reflection coefficient at the interface is

The following Variable Entered Map (VEM) represents which of the following function:

Consider the circuit shown below of 2 : 1 MUX is given by the function g = ac + bc

Then f is :

A periodic voltage has following values for equal time intervals changing suddenly from one value to next :--etc.
What would be the RMS value of a sine wave having the same peak value as that of the above mentioned periodic wave?

In a infinite ladder circuit as shown above each resistance of r Ω then find R_AB

The electric field of uniform plane wave is given by E =sin (2 p x 10⁸t- pz) _x +cos (2 p x 10⁸t - pz) _y. Find phase velocity

The minimal function that can detect a "divisible byBCD code digit (representation D₈D₄D₂D₁) is given by

In a infinite ladder circuit as shown above each resistance of r Ω then find R_AB

To realize following function 'f',

How many minimum number of 2 input NAND gates are required?

A control system is as shown in given figure The maximum value of gain K for which the system is stable is

In the circuit s closed for a long time and steady state is reached. s is opened at t = 0⁺ Determine current through resistor.

The probability density function of a random variable x is as shown.

The mean of the distribution is:

A lossless transmission line iscm long and operates at a frequency ofMHz. Inductance and capacitances present in a line are 0.5 μH/m andpF/m. Phase constant and phase velocity are respectively.

Two D flip-flop as shown below are to be connected as a synchronous counter that goes through the following Q₁Q₀ sequence
→→→→→ __________
The inputs D₀ and D₁ respectively should be connected as

Consider the sequence x(n) whose fourier transform X(e^jω) is depicted for - p ≤ ω ≤ p as shown in figure

1. x(n) is periodic
2. Real
3. Even
4. Finite energy

Two coils X ofturns and Y ofturns are placed such thatof the flux produced by coil X links coil Y. A current of 1 A in coil X produces 0.1 wb flux. The mutual inductance between coils is

The number of distinct Boolean expressions of 3 variables is

The region between a pin of parallel perfectly conducting planes of infinite extent is y and z directions is partially filled with a dielectric as shown below.

AGHz TE₁₀ wave is incident on the air-dielectric interface. The value of reflection coefficient at the interface is

The following Variable Entered Map (VEM) represents which of the following function:

Consider the circuit shown below of 2 : 1 MUX is given by the function g = ac + bc

Then f is :

In a synchro error detector, the output voltage is proportional to [ω(t)]ⁿ, where ω(t) is the rotor velocity and n equals :

To realize following function 'f',

How many minimum number of 2 input NAND gates are required?

In the circuit s closed for a long time and steady state is reached. s is opened at t = 0⁺ Determine current through resistor.

Consider an angle modulated signal
x(t) = 6cos[2p x 10⁶t + 2sin(8000pt) + 4cos(8000pt)] V
The average power of x(t) is