Lab 1 – Transfer Characteristics of RC Circuits (Filters)

C.) A part of a radio tuning circuit has an inductance of 0.2microH and a variablecapacitor. If the circuit is to tune at 102.7MHz FM frequency, determine the value ofthe capacitor needed to tune this circuit.

Identify all the TRUE statements below. A) At resonance, there is no voltage drop across the individual reactive elements of the circuit._ B) At resonance, there is no net voltage drop across all the reactive elements of the circuits._ C) To minimize the impact of capacitance in an AC series circuit, set its value close to zero. D) To minimize the impact of inductance in an AC series circuit, set its value close to zero. E) At resonance, X, and XL are always zero. F) At resonance, Xc = X_ and can be very large. G) Decibels on the magnitude axis of the Bode Plot represent voltage gain (or loss). H) Decibels always represent power gain (or loss) which is the square of the voltage gain (or loss). O B O D O E O F

Question 4 (a) Explain what is the resonance frequency in an AC circuit where a resistor, capacitor and inductor are connected in series. (b) If a capacitor is connected to an AC voltage source, what is average power transferred to the capacitor in one oscillation cycle? Explain. (c) What is the function of a high pass filter? Draw a diagram of a simple high-pass filter using a capacitor and a resistor.

Explain the RC time constant and what its value means in terms of circuit characteristics.

A series circuit consisting of a 16 – ohm resistor, a 0.1275-henry inductor, and a variable capacitor is connected to a 116 volt 50 cycle source. (a) for thecondition of resonance calculate the capacitance, current, and voltage dropacross the capacitor; (b) determine the capacitance, current, and voltage dropacross the capacitor when the voltage drop across the latter is a maximum. draw circuit diagram

What is Maximum Usable Frequency (MUF)? Derive the expression of MUF critical frequency (fcr) and skip distance assuming curve earth.

7-18 Abasehand signal having components from near de to 8 kHz is used to frequency modulate a high-frequency carrier, and the maximum frequency deviation is set al +12 kHz. Delermine the approximatle transmission bandwidth.

For the filter: a) Determine type of filter and the cut-off frequency (Fc). Determine the peak voltage at the cut-off frequency (Fc). b) Find GAIN (Vo/Vi) at f = .1*Fc . Find GAIN (Vo/Vi) at f = 10*Fc . c) Determine the frequency at which GAIN = .4 (i.e., Vo = .4*Vi) . Draw the “Frequency Response Plot” in “Log-Log” format .

I need proper solution for the following( underdstandable writing and well explained) thank you  What is resonance in LCR circuit? and tell the difference between impedance and resistance?

The figure is shows the first stage of a superheterodyne receiver. The desired input signal is at a frequency of 700 MHz. The local oscillator (L.O) frequency is 1 GHz. The mixer is an ideal multiplier with a gain independent of frequency. A band-pass filter (BPF) is used to select the Intermediate Frequency (IF) output at 300 MHz. Input Mixer LO. 8PF IF Input (a) What is the image frequency of the desired input? (b) A Low Pass Filter (LPF) can be used before the mixer to reject the image frequency. If a perfect rejection (zero transmission) of the image is desired, what type of LPF should be employed?

Q6-) If NBFM signal passes through a frequency multiplier. With β< 0.5 and fc=200kHz. Let fm ranges from 50Hz to 15kHz, and let the maximum frequency deviation Δf at the output be 75kHz. Find the required frequency multiplication n and the maximum allowed frequency deviation at the input.

[Q4A] For each signal, if it is periodic, find the fundamental period To. a-x(1) 5 cos(3xt + 1.2)-8sin(5πt-4).. b-x(1) 5cos(3x+1.2)-8sin(51-8)