d) A radio antenna pointed in a direction of the sky has a noise temperature of Ts = 50 K. The antenna feeds the received signal to a pre-amplifier operating at an ambient temperature of To 290 K. The pre-amplifier has a gain of 35 dB over a bandwidth of 10 MHz and a noise figure of 2 dB. - (i) Determine the noise power at the output of the preamplifier in dBm. (ii) Determine the signal power Pr (in dBm) at the antenna terminals such that the signal-to-noise ratio is 50 dB at the output of the pre-amplifier. You may take the Boltzmann constant as k 1.38 × 10-23 JK-¹.

Q: Does maximum power transfer imply maximum efficiency of power transfer? Explain

A: In this question we will write that maximum power imply maximum efficiency or not....

Q: A balanced A connected load having an impedance of 20-j15 Ω is connected to a A connected, positive…

A:

Q: Draw the small signal equivalent circuit. Determine the following: Zo Zin Av (voltage gain) Ai…

A: The required parameters can be calculated by using the DC and AC analysis of the cascade amplifier.

Q: Experiment 3 1. Define resistance of a material. Write the unit of resistance. 2. How do you…

A:

Q: Sketch the signal x(n) shown below as: 1. xn) u(l-n) 2. x(n) { u(n+2) - u(n) } .... 4 3 2 1 0 1 2 3…

A:

Q: Find the z-parameters for the circuit shown in Figure 2(c). 20Ω 40Ω M {10Ω Figure 2(c)

A: Given circuit,

Q: 4 WE CONSIDER THE SQUARE DRAWN BELOW FORMED BY FOUR ELECTRICAL POINT CHARGES Q. WHAT IS THE…

A: In this question,  We need to choose the correct options What is electric field and potential at the…

Q: The diagram below shows a mid-point reactor tap-changer in one phase of transformer winding. What is…

A: Given  A circuit diagram of mid-point reactor tap changer. We need to determine the purpose of…

Q: 1. The rotor resistance and reactance per phase of a three-phase wound rotor induction motor are…

A: In this question induction motor is given....We have to find out full load speed , speed at maximum…

Q: The Laplace transform of f(t) = sin() is: Select one: O F(s) = 2 (2s)² +1 O F(s) = 1 28 O F(s) = =…

A: Given, Function, ft=sint2

Q: Determine Zab in the circuit below. jΖΩ -j4Ω 00- mon Zab both -j4 Ω 6Ω 4Ω 6Ω 6Ω 32 Ω 8 Ω

A:

Q: C + EAN A B Ia Vca – 20 Ω, + -j 15 0 Ica/co Lab Vab -j15 Ω -be 20 Ω 20Ω –j 15 Ω www 46 Vbc +

A:

Q: 2. Determine Voand Sketch output waveform for the clipper network shown. Si +10 V 3 V ov -10 V V₁…

A:

Q: A 6-pole alternator running at 1000 rpm, supplies an 8 pole induction motors. Find the actual speed…

A:

Q: A single-pole causal LTI system has the following impulse response given below. h(n) n Which option…

A:

Q: What is the value at n=0 of a causal signal x[n] if it has the following z-transform below?

A:

Q: Question 1 Given the boolean function: F (A,B,C,D) = Σm (1, 3, 5, 7, 8, 10, 11, 13, 15) Implement…

A: given here a boolean function and asked to implement it with the help of the 8 ×1 multiplexer .

Q: The diagram below (not to scale) shows a symmetrical arrangement of conductors in a 700m long…

A:

Q: A three-phase source has a phase sequence

A: Active Power- It is power utilized by the load. Active power is equals to the multiplication of…

Q: 3. A single phase inductive load of 7500 kw has a lagging pf of 0.8. Draw the power triangle and…

A: Power Factor:- It is the ratio of real power to apparent power. It indicates utilization of power…

Q: HW • Convert the state and output equations shown in below model to a transfer function. -1.5 x =…

A:

Q: An abc-sequence, three-phase, 4-wire, 380-V supply is connected to an unbalanced load having phase…

A: Phase sequence:- Three phase sequence have same magnitude and phase difference by each other by 120…

Q: For the circuit in the figure, Van = 120 Vz0º. EAN a. Find phase voltage EAN, magnitude and angle.…

A: In this question,  We need to determine the phase voltage and angle at the source if voltage across…

Q: 11. Draw the voltage and current waveforms for the circuit of Figure 2. Figure 2.27 1e-3 sin2pi1000t…

A: In this question , we will draw voltage and current waveform of given circuit....

Q: Find the z-transform of the signal x[n] = (-1)^u[n] + ( )¹u[−n − 1]. a. x[n] does not have a…

A:

Q: During a race, a man's sports far develops 250 hp at 4000 rpm. What is the amount of torque exerted…

A: 1) Option -- B 2) Option -- D 3) Option -- A

Q: 3.) True or False: If the frequency is zero, the capacitive reactance is infinite. It is said that…

A: From the Question If the frequency is zero, the capacitive reactance is infinite. It is said that…

Q: What is the magnitude of the electric field (in N/C) at a distance of 1 mm from a single electron?…

A: Given data, A single electron. To determine the magnitude of electric field at a distance r=1 mm…

Q: Design a simple circuit using Ohm’s law. In the  circuit you designed, explain how you could  reduce…

A: Power dissipation is the process of generating heat due to loss in the device, in resistors as the…

Q: The values of Vmax and Vmin as read from an AM wave on an oscilloscope are 2.6 V and 0.29 V…

A:

Q: 4. An RC filter stage (R = 33 02, C = 120 µF) is used to filter a signal of 24 V dc with 2 V rms…

A: It is given that: R=33ΩC=120μFVdc=24 VVrms=2VIL=100 mA

Q: Determine the z-transform of the sequence x[n] = (-)" cos(³)u[n] a. √2 1+42¹ ROC: |Z| > -1 Z + O b.…

A: In this question we need to find a z transform of the given signal.

Q: A balanced delta-connected load with impedance per phase of 30/30 is connected to an abc-sequence…

A:

Q: An amplitude modulated signal has a maximum positive envelope voltage of 14 V and a minimum of 2 V.…

A:

Q: (c) The amplifier's circuit in Figure Q.1(b) has the following parameters; k=0.5 mA/V², VGS(TH) -2…

A: Amplifier: Amplifier is a Electronic device, its take a input signal from various source and…

Q: Q.22: 380V, 3-, 4-wire CBA system with A-connected load (3+j4,3-14,5) ohm. Find the line currents…

A: Delta Connections:  In a three-phase electrical system, a delta connection is formed by three…

Q: An unbalanced star-connected load is supplied from a 400-V, 3-ph, Y-connected alternator through…

A:

Q: 3. If p(x, y, z) = 2xz¹-x²y, find Vo and Vol at the point (2,-2, 1). (b) A-Vp, (c) V-(Vo) at

A:

Q: 16.) Calculate the inductance or capacitance in series for the impedance 60240° ohms. Assume the…

A: We need to find out the value of inductance for given impedance

Q: A balanced delta-connected load with impedance per phase of 30/30° is connected to an abc-sequence…

A:

Q: Which of the following methods are used for controlling the VAR flow in a power network ? The…

A: Here, the objective is to determine the correct options for the controlling VAR flow.

Q: A source of AC emf E₁ = 120/30º volts with an impedance of Z₁ = 2/0° ohms is connected in parallel…

A: In this question we will find load current for parallel connected AC source....

Q: Present actual applications related to the use of the DC motor in the setup of the robotic system…

A: A DC motor is a Electric device which converts the electrical energy into physical motion. The…

Q: A balanced delta-connected load with impedance per phase of 30/30° is connected to an abc-sequence…

A:

Q: 11. Transform s² + 1 S³ + s

A:

Q: 12.) A voltage v = 220 sin (110t + π/2) is applied to a resistor of 45 ohms. Find the r.m.s. value…

A: We need to find out RMS value of current

Q: A circuit that generates a suppressed carrier signal with two sidebands is: Select your answer.…

A: In this question , we will write about generation of double side band suppressed carrier signal.....

Q: Find the transfer function, ?(?) = ?2(?)/?(?), for the translational mechanical network shown below.…

A: In this question we will find transfer function of given translational mechanical system....

Q: Show whether π - x⁴, -1< x < 1 A fourier series odd or even function

A: A function is said to be even function then f(-x) = -f(x)  A function is said to be odd function…

Q: 32 (3). Filter that appears to be a low-pass RC filter, but the switching action makes the circuit…

A: A filter is a electrical circuit which is used to pass the desired frequencies in a signal while…

Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.