Power gain of antenna equals directive gain in VHF and UHF range if and only if efficiency of the antenna is __________ .
The logic function implemented by the following circuit at the terminal OUT is
Consider the Schmitt trigger circuit shown below. A triangular wave which goes from -V toV is applied to the inverting input of the op-amp. Assume that the output of the op-amp moves from +V to -V. The voltage at the non-inverting switches between
For the power amplifier circuit shown below, the maximum power dissipated by both output transistor is
The Boolean function realized by the logic circuit shown is
Find equivalent capacitance if each capacitance is 2 F.
The impulse response h(t) of a linear invariant continuous time system is given by h(t) = exp (- 2t) u(t), where u(t) denotes the unit step function. The output of this system to the sinusoidal input x(t) = 2cos(2t) for all time t, is
Find RAB
Find RL for maximum power transfer.
For a integrator circuit, Ri =KΩ, CF =μF. The input is a step dc voltage as shown below. Its output will be
AkHz carrier wave modulatedatHz is applied to a resonant circuit tuned to a carrier frequency and having Q =What is the degree of modulation after transmission through this circuit?
In the circuit shown, all the transmission line sections are lossless. The Voltage Standing Wave Ration (VSWR) on theline is
The input 3-dB frequency is :
The transfer function of a zero-order-hold system is :
2's complement representation of abit number (one sign bit andmagnitude bits) is FFFF. Its magnitude in decimal representation is
System is :
The feedback control system shown in the given figure represents
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 VSWR at the interface is
A power ofW is radiated from an isotropic radiator. The power radiated peer unit solid angle and the power density at a distance ofkm from the antenna is respectively
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