Lab 9 Wave

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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. >

What happend to the wave form?

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Pic. 1 Course: Electrical Engineering Topic: Dynamics

Answer these two subparts   1. It is the ability of a material to generate an electric charge when subjected to pressure a. Piezo electric effect b. Varistor effect c. Optocoupling effect d. Statoring effect   2. it is passing electricity from an external source though piezoelectric crystals will convert the electrical energy into sound waves a. Piezoelectric effect b. Inverse piezoelectric effect c. Varistor effect d. Statoring effect

Analyze, demonstrate the electrical analigy and develop Electrical Analogies of Rotational Mechanical System

التاریخ | موضوع الدرس Vincoms) -220v AL=10k C = 100 ME e The FwRcct. %3D Find: 1. Dcvaltage and Current AS/p=1/5 ii the ripple Ualtage Tit ripple factor

There's a typo. It would be p3(-15,-16)

Discuss howa very large electric field is generated by using an Induction coll

9 - In oscilloscopes, ……………….. squares on the screen are taken into account when measuring voltage, and ……………….. frames on the screen are taken into account when measuring the period of the signal.A) vertical / diagonalB) horizontal / horizontalC) vertical / horizontalD) horizontal / verticalE) vertical / vertical

Mechanisms which lead to the losses in dielectrics are: O a. O b. O C. O d. All of the choices are correct partial discharges orientation boundary layer polarization leakage current e. deformation polarization

Q2: Suppose the figure below represent a 25 HZ wave on a string. Find the following: Amplitude, wavelength, speed of the wave, angular velocity, write the equation of wave traveling to the left, finally find the displacement of wave at x= 6 m and t = 0.5 sec. x (cm) 2.00 1.00 AA 0.00 t(s) 3 5 6 -1.00 -2.00

In an oscillatory motion of a simple pendulum, the ratio of the maximum angular acceleration, e"max, to the maximum angular velocity, e'max, is 2Tt s^(-1). What is the time needed for the pendulum to complete two oscillations? 4 sec 2 sec 0.25 sec O 1 sec 0.5 sec

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PLEASE ANSWER IT ASAP FOR AN UPVOTE. THANK YOU. Round off your answer into four decimal places .Box your final answer .Use SI unit. A magnetic circuit consist of silicon having a cross section of 1.5 sq. m and 0.1 m length and an air gap of the same cross section and pf 0.02 m length. what is the field intensity at the air gap if 0.5 A current flows through the 5000-turns coil? Assume the permeability of silicon steel is 3000.

Draw the waveform at Q2, Q1 and Q0. All signals (Q2, and Q1 and Q0) are initially at '0'.

لمد 2~ What is the Electric Field at P₁? What is the Electrostatic Potential P₁ at Pl? P₁ x

1.A. What is the primary advantage of measuring a voltage with an oscilloscope verses using a digital multimeter? = B. Explain how both the amplitude and the frequency of a repetitive signal can be determined using an oscilloscope. - C. If the oscilloscope displays a sine wave that is 6 divisions high and each division is 0.2V, what voltage do you expect to read on your multimeter if it is set to ac volts? D. Explain how to adjust an oscilloscope so that the displayed tracing of a repetitive signal is steady, and doesn't drift across the screen.

a) What must always be used with an Oscilloscope when making a measurement? b) How do you read the amplitude (Frequency) of a signal from the waveform on an oscilloscope? c) How do you calculate phase shift by measuring the time delay between zero crossings of two different signals?

10: The value of B at H-0 in a Hysteresis curve is called A) Remanence. B) Coercivity. C) Magnetization. D) Porosity 11: Ferrites are a sub-group of A) Non-magnetic materials, B) Ferro-magnetic materials, C) Paramagnetic materials, D) Ferri-magnetic materials. . 12: Find the true statement. A) Most of the substances show ferromagnetism, B) The magnetic susceptibility of diamagnetic substances are temperature independent, C) Water is paramagnetic in nature, D) Typical domain size of a ferromagnetic material is I nm. 13: Mutual inductance between two magnetically coupled coils depends on A) Permeability of the core material, B) Number of turns of the coils C) Cross sectional area of their common core, D) All of the above. 14: Which of the following circuit elements will oppose the change in circuit current? A)Capacitance. B) Inductance, C) Resistance, D) All of the above. 15: If the current in one coil is steady, what happens to the mutual inductance? A) Zero, B) Infinity. C) Doubles, D)…

the principle of gauss and tesla meter depends on الاختيارات forward biase hall effect time of flight Mie scattering

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Mechanical waves are classified according to their shape. their size. how they move. their source.

In a. ., the number of parallel paths, is always equal to the number of poles. I ., the number of parallel paths, is always two (2), and there ........ .may be two or more brush positions إجابتك In . . both shunt and series field are excited. If the two fields aid each other the excited is called . If the two fields oppose each other, the ...... ... 大 .. ........ excitation is called إجابتك In . .compound, the shunt field is connected across terminals. In the ......compound, the shunt field is connected directly across the * .armature .....

L The thermoelectric effect is the direct conversion of tomperature differences to electric voitage and vice versa oloctric voltage to temperature differenc ii. The Seebeck offect is the build up of an electric potential across a temperature grodient. L. Tho Poltior offoct is tha prosonco of temmperaturo difforoncos at an oloctrifiod junction of two difforont conductors. Which of the definitions given abovo are correct about thermal properties of matorials?

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Electromecanix waves