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Vcc=15V Q1: BC237 Rc 3.6kQ or BC238 B=200 VBE(on)=0.7V R1 110KQ Rs Cci 1000 4.7µF Cco 4.7µF R2 ·27kΩ RE 1.2kQ RL 12kΩ Vs Rin Rout Figure 1. Common-emitter amplifier. 2)

1) 169sin 377t        a) What is the peak factor?       b) What is the form factor?

Consider an: alternating FME resulhng allernating EMF resulhng in the uwenit of form;IU)=IoSin (wt] In South Africa the Standard voltage is 230 volts and the is 50H2. How frequency ney much charge is fransferred to residen ce durng one a tybical riod:

Discussior partic enta tfrom the outPut signal fär half and trif lwave rectifer, calculate the Peak. ruot mean square crim.s) er and de values for Voltages. 2- Rind the freguency of indut and outfut Voltage signals 3-eXp laiN why you gut the positive Purts only of inPut Sigral of both clrcults.? inthe out Aut.

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Q 3 Bring out the advantages and disadvantages of microwave tube devices andsemiconductor devices.What are the most common types of microwave diodes and transistors in use give theirbasic features features and applications?What are the most common types of microwave ICs? Give details of the circuit elementsand applications

Reset the PhET simulation (using the button in the lower right) and set it up in the following manner: select Oscillate, select No End, and use the parameters in parentheses by sliding the bars for Amplitude (1.00 cmcm), Frequency (2.00 HzHz ), Damping (none), and Tension (highest). Using the available Rulers, calculate the frequency of a photon that corresponds to the wavelength of the resulting wave. Assume the length with units (cmcm) of the ruler represents the real photon wavelength and that the speed of light is 3.00×108 m/s3.00×108 m/s. Express the frequency in hertz to two significant figures.

4) Listen A sinewave voltage is defined by an effective voltage of 2.82Vrms. Calculation of the amplitude Vpk is performed: By multiplying Vrms by 2/Pi (=0.637). By dividing Vrms by 1.41 (square root of 2). By multiplying Vrms by 1.41 (square root of 2). By dividing Vrms by 2/Pi (=0.637). Calculation cannot be done since we do not know the frequency of the signal. O None of these statements are true. prt sc 144

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Also give the excitation table and transition table and state diagram too

Convert: -24-j7 to polar 25cjs16.26deg 25cjs196.26deg 25cjs(-196.26)deg 25cjs163.74deg None of these Convert: j70-240 to polar 250cjs(-196.26)deg 250cjs(-16.26) deg 250cjs(-163.74)deg 250cjs196.26deg None of these

9. For the circuit shown in Figure Bl19a, Ve- 20V Rc 3k R = 10k 2 Wr VCE VBB=3V Figure B19a i) Sketch the DC load line in the Graph B19. ii) Calculate the Q point, if the zero signal base current is 50 µA and a -0.991. Mark the Q point in load line. D Focus 重 f8 fg f10 insort sc f12 & 近

- at A signal Flt) = 2e ult) is applied to the input of.. System have frequency trunsfer funchiom THlw)I = Determine the required relations ibetween the Constants a und b Such that exactly 50% of the input energy on to the output %3D a 1-ohm basis is transffered

diff b/w aproximated & Interp0leted Curves. (Brief explanation with sketches)

Write an 8051 ASM program to load the timer 1 in order to generate 2000 Hz square wave as given in Figure. The square wave should be generated on pin 2 of port 3. Assume the crystal frequency is 16 MHz. ON 4* Delay Delay

FIND RTH,VTH( NEED ONLY HANDWRITTEN SOLUTION PLEASE OTHERWISE DOWNVOTE ).

Question: If you know the input voltage is 20 Vpp (top to top) and the load resistance is KN R=1 calculate what's coming.: 1- At the first approximation calculate (the greatest current passing through the load resistance, output voltage). 2- At the second approximation calculate (the greatest current passing through the load resistance, the output voltage . draw the shape of the output signal). 3- When rounding second guess (the greatest stream passes through the load resistance if you know that the current front 15 ml-amp at voltage of 1 volt, voltage output, draw the shape of the signal emerging). Sinusoidul Wavefom Supply Rectifed Output Waveform AA Diode No Negutive Halt cycle

20: Given Ldc=0.98 , determine Bodc: Pdc O Given Pdc=120 , determine the cormesponding value of d. © Given Pelc- 120 Te= 2:0mA , findl IE and If

The Excess-3 value of (0111.1010) 2 is

A2 Briefly, but informatively, describe importance laser ablation in combination with ICP-MS in solid sample. Cite Reference/s

8. O0 eneogy signal. Find its value Check whethes the given signal is power signal 3 4)" ; n70 xCn) =

Design an encoding matrix with diodes and resistors to display a decimal number to on the seven-segment display. You have 10 switches (WO-W9) with one terminal connected to Vec. For decimal number 0, switch 0 (S0) is closed, for decimal number 1, switch 1 (S1) is closed etc. (Switches are on the vertical axis, S0 on top and the outputs are taken on the horizontal axis (Y0-Y6), with “a" on the left and "g" on the right. Note that (Y0-Y6) outputs are used as inputs to seven-segment display. Since these outputs cannot drive the seven segment display LEDS you may need additional bipolar transistors and resistors. The supply voltage is 5V and each LED needs a current of 20mA. Note that this is a design problem and the design is not unique. Do your best! f a a e

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The waveform given below is observed on the screen of a CRO. If the time/div switch is set at 10 µsec and the volt/div at 200 mV, the frequency and peak to peak voltage are, respectively. -1.5 -1 -1- -2- 2 1 1 1.5 2

A) How can you be able to interpret and create FFT graph from simple sine wave?  B) How can you be able to interpret and create sine wave from simple FFT?

Q1: From the circuit shown below:- Vrms=19.8V f₁ =125Hz For the given circuit, a) State the name of each stage:- Stage 1 is Stage 2 is Stage 3 is Stage 1 is Stage 1 Stage 2 is Stage 3 is 0.5μF ...... ww Stage 2 R oscillator Ripple Filter Half Wave Rectifier Voltage Regulator b) The output plots below, match each stage with its output plot: (a) Voltage Regulator Full Wave Rectifier (c) (sec) Stage 3 Vout (b) (d) (sec) t mmmm (sec) (sec)