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Problem 1:
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- Q. Determine the RC values of Wien bridge oscillator circuit for the operationat a frequency of 10 kHz if R = 100 KΩ and R1 = 1 KΩ. Also check the condition for sustained oscillation.Assuming a 60 Hz, how much time – in seconds – is the peak positive current behindthe peak positive voltage when the current lags the voltage by:a. 90 degreesb. 0 degreesc. 60 degreesthe emf source E = 3,6 V, of the curcuit shown in the figure has negligible internal resistance. the capaccitance C = 4 uF. a) determine the constant r, in units of microseconds for charging the capacitor b)what is the charge Q on the capicotor in units of microcoulomb ?
- A steady current of 10.0 A is passed through a water voltameter for 300 s. Estimate the volume of hydrogen evolved at standard temperature and pressure. Use the known value of Faraday's constant. Relative molecular mass of H, is 2.016 and molar volume = 22.4 litres (volume of 1 mol of an ideal gas at STP). trolusisA 30-µF capacitor is connected across a 60-Hz acsource whose voltage amplitude is 50 V. (a) What is themaximum charge on the capacitor? (b) What is themaximum current into the capacitor? (c) What is the phaserelationship between the capacitor charge and the current inthe circuit?For an AM envelope with maximum peak a voltage of 52 V and minimum peak to a peak voltage of 24 determine the ff. a. Percent modulation Blank 1 b. Peak voltages of the carrier and side frequenciesBlank 2 Maximum positive to negative с. envelope voltage Blank 3
- Now take ɛ = 15V, C = 20 µF, and R = 4.0 X 105Q and charge the capacitor in the RC circuit. (4) What is the equation of the current as a function of time? (5) What is the maximum current? (6) What is the equation of the charge on the capacitor as a function of time? (7) What is the maximum charge? (8) What is the time constant for this circuit?a) The voltage across a 10µF capacitance is ve = 150 sin( at – 509) volts and Frequency equal to 50 Hz. Determine the current through the capacitor iç and sketch its waveform. b) Define the term frequencyThe main purpose of an oscilloscope is to graph an electrical signal as it varies over time. Most scopes produce a two-dimensional graph with time on the x-axis and voltage on the y-axis. The voltage waveform on the screen looks as shown in the figure below. Here, the vertical resolution of the oscilloscope is set up to be 2 mV/division and the horizontal resolution is 2 mns/division. Time 1. Determine the peak-to-peak amplitude of the wave, 2. Calculate the period and the frequency of the wave. 3. Calculate the approximate value of phase difference between the waves. Voltage
- 3.3 Procedure: 1. Connect the circuit shown in the figure (6). Choose RL to be 100ohm. CT R D2 Figure (6) 2. Set the function generator by an AC voltage (220 (r.m.s)V/ 50 Hz) and draw the input waveform. 3. Connect the Oscilloscope to both ends of the resistance, Draw the wave shown in the screen of the Oscilloscope. llleIn the saturation region (I-V characteristics) of JFET the value of D18 ssmemanmnssnes at specific (VGS = * .negative voltage ) a. b.c.d a: constant O b: zero O c: maximum O d: Bothaandc OThe main purpose of an oscilloscope is to graph an electrical signal as it varies over time. Most scopes produce a two-dimensional graph with time on the x-axis and voltage on the y-axis. The voltage waveform on the screen looks as shown in the figure below. Here, the vertical resolution of the oscilloscope is set up to be 2 mV/division and the horizontal resolution is 2 ms/division. Time 1. Determine the peak-to-peak amplitude of the wave. 2. Calculate the period and the frequency of the wave. 3. Calculate the approximate value of phase difference between the waves. Voltage