final2020

elearning.adpoly.ac.ae * Question Completion Status: QUESTION 53 E-05, PC-02. Which dielectric media will have more the capacitance of capacitor? O Air. O Mica. O Paper. QUESTION 54 E-2, PC-03. A component that produces an output voltąge due to incident light is called a. O liquid crystal. O light-emitting diode O solar cell. O cell QUESTION 55 E-2, PC-03. Thermocouples have O only one junction O two junctions, both are cold O two junctions, one junction hot and one junction cold. O two juctions, both are hot QUESTION 56 Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Air

5. Compare the frequencies measured with the oscilloscope (Measured Menu and Cursors) to the function generator setting. What are the main sources of error in this measurement? An oscilloscope displays the waveform shown below. If the volts/div setting is set on 10 and the sec/div setting is on 1.0 ms, determine the peak-to-peak voltage and the frequency. 6. 109

An Emf is given by e=110 sin(377t+45°) volts. Determine: (a) maximum value (b) frequency (c) e when t = 0.005 sec d) time when e reaches the first 90 volts.

-) Below are two voltage patterns measured from an oscilloscope. The voltage stage of the CHI probe is 5 V / div, the CH2 probe voltage stage is 10 V / div and the time axis is 2ms / div. According to this information, a) What are the peak to peak and rms voltage values ​​of the voltages in CHI and CH2? b) What is the frequency of the voltages in Hz? c) How many degrees is the phase difference between the two voltages, which voltage is leading?

Define: the ferrite loop antenna

dujo/mod/quiz/attempt.php?attempt=301878&cmid%3D62858&page 10 m TELL TJ0) T Firing angle-50 Degree 1:2 -200/200v For the circuit shown Vo rms = 5 Ohm 50 Hz O 132.6V O 21.5V O 141.AV O 200V O 63.8V O90.5V o ov Clear my choice arch DE

The device below is a transmitter of electromagnetic waves in which high frequency AC voltage drives the mobile electrons back and forth in the transmitting antenna. The receiver is made of two metal rods connected by a flashlight bulb. Which of these situations will light the bulb? A O Situation B and C O Situation B O Situation C O Situation A O None of the above

A 50-ohm coaxial cable is terminated by a 10 uH inductor. What is the voltage standing wave ratio if the cable is operated at 1 MHz?

Tek Station 1 Tektronix TBS 1052B-EDU Digital Oscilloscope 5.00V Aca Complete M 1.00us M.Pos: 100 Ous Ch1 / 0.00V <10Hz Jun 15, 2022, 20:35 GWINS 50 MHz 1GS/s On/of

3. Generate a square wave of 0.5Hz with a duty of 50% on pin P1.0 as XTAL = 12 MHz. U1 12DXINT PODADO P0.1/AD1 PO 2/AD2 18 XTAL2 PO.3/AD3 P0.4/AD4 34 PO.S/ADS PO.6/AD6 9 32 RST PO.7/AD7 P2.0IAS 21 P2.1/49 P22/A10 PSEN ALE P2 3/A11 P2.4/A12 P2.5/A13 P2.6/A14 25 26 EA 20 P2.7/A15 10 P1.0 2 P1.1 P12 P1.3 P3.ORXD P3 1/TXD11 P32TS 12 P3.3ANT113 P1.4 P1.5 P34/7014 P15/T1 P3.6WR 15 16 17 P1.6 P1.7 P3.7/RD 50651 4 4 I R1 0.01 R2 0.01k D2 LED-BIBY D1 ■ LED-BIBY 30 31 -2.1

Q. 14. When constructing volt time curve, if flashover occurs on the tail side of the wave, the point on the curve will have a voltage magnitude equal to: A The applied wave peak B. The applied wave flashover point C. The applied wave peak multiplied by a factor of 0.9 D. The applied wave flashover point multiplied by a factor of 0.9 itte waiml|

Needs Complete typed solution with 100 % accuracy.

Subject: Electronic Engineering

electromagnetic theoryWhat is the solid angle unit? a) radb) mc) srd) s

6. Referring to Figure 5, given that the peak current Ip = 5 mA. %3D i. Briefly explain the terms: angular velocity, frequency, and period. ii. Write the mathematical expression for the sine wave below that represent the ac current. iii. Find the effective value, Ims iv. Calculate the frequency, f and the period, T V. Determine the instantaneous current at t1 25 µs, t2 = 60 µs, t3 = 120 µs %3D %3D i(t) 150 350 t (us) 50 250 Figure 5

Which element affects the inductance of a coil of wire: Select one: a. RC time constant. b. number of turns in the coil. c. current. d. AC frequency.

18.a. How does dispersion affect light pulses in an optical fiber? A. It causes total internal reflection. B. It can cause pulses to be indistinguishable. C. It causes pulses to die off as they travel down a fiber. D. It causes pulses to increase in power as they travel down a fiber. 18.b. Which of the following frequency bands do single-mode optical fibers use for communication? A. L B. C C. S 18.c. What type of cable is presently used to route phone and internet service to homes? A. Patch B. Fiber optic C. Twisted copper D. Coaxial

If a wave guide has he inner and outer conductor diameters of 0.0645 and 0.0215 inches respectively for a co axial lines then the cut off wave number is: a) 298 b) 300 c) 285 d) 123

Facts A clipper is a device that removes either the positive half (top half) or negative half (bottom half), or both positive and negative halves of the input AC signal. In other words, a clipper is a device that limits the positive amplitude or negative amplitude or both positive and negative amplitudes of the input AC signal. In some cases, a clipper removes a small portion of the positive half cycle or negative half cycle or both positive and negative half cycles. In the below circuit diagram, the positive half cycles are removed by using the series positive clipper. Question: In your own opinion. Why do we need to clip a certain amount of voltage in positive or negative or on both sides? What is the benefit of that in our devices or circuits in doing such thing?

A voltage reflection coefficient is measured as 0.75 , and the correspondingload voltage is 1 V. Determine (a) the incident voltage component at the load , (b) the reflected voltage component at the load , and (c) the current reflection coefficient

Please write introduction four - line . for lab report about: (Fundamentals of AC and Signal generation using Oscilloscope)

If the input Vi is a triangle voltage signal. What will be the form of the output Voltage? write your answer in the given space. Rf Ci Vi Vo Paragraph I of II !!

Question 4 This is realted to #6 on the Waves Introduction Worksheet portion of the document. Graph A Graph B Displaament vs. Position for Random Wiave Displacementvs. Time for Randem Wave -1 -2 -4 -5 Position m) Time (s) What is the frequency of the wave represented by these two graphs? Your answer: 0.25 Hz 0.5 Hz 2 Hz 4 Hz Diaplacement (m) w nds

A new band sensation is playing a concert and recording it for a live album to be released this summer. Select all the statements that are true for when the microphone records the sound. The microphone changes the wave from mechanical wave to an electromagnetic wave. The recorded waves are electromagnetic waves. The microphone does not change the wave type. The recorded waves are mechanical waves. The frequency or amplitude of the waves will not change in the microphone. The frequency or amplitude of the waves will change in the microphone. ✓ The microphone changes the wave from an electromagnetic wave to a mechanical wave. >

Identify the electromagnetic waves ranging in frequencies between 300GHz and 400THZ . a. High frequency b. Radio wave c. Infrared d. Microwave

The Cathode Ray Oscilloscope (CRO) may be used in the observation of waveforms to do the measurements of voltage, current, phase and periodic time. Due to increased armature m.m.f, the armature reaction during load condition will decrease and hence the field flux will be increased. Select one: O True O False

Electromagnetic Waves

Question 9 When comparing the 1st waveform & the 2nd waveform what control on the oscilloscope has changed

Electrodynamic meters can measure ac signals only. True False

9

Answer only for (c2 (!) )