What will be the velocity of an em wave of the relative permittivity is 4 and relative permeability is unity

Q: What's the rise time for this system with its closed-loop poles as shown? Jo x- 14 j6 j8 Select one:…

A: Rise time from the poles given on the graph is determined as shown below

Q: In a ., the number of parallel paths, is always equal to the number of poles. In. ., the number of…

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Q: If reflection coefficient = 0.15 and Intrinsic impedance n₁=20.5, then n₂=? (n=3.14154 and take the…

A: Given, Reflection coefficient, Γ=0.15 Intrinsic impedance, η1=20.5 Intrinsic impedance, η2=?

Q: Number of parallel paths in a wave winding is equal to the number of magnetic poles True False

A: Number of parallel paths in wave winding is 2. In wave winding : A = 2   In case of lap winding…

Q: Q1- The given ferromagnetic core relative permeability is 800. Determine the total reluctance of the…

A: According to the question given the value of relative permeability and measurement of core and we…

Q: ) Make a symmetry argument, using words and sketches, similer to those arquments found in the…

A: It is given a toroidal coil, we need to calculate magnetic field density inside the coil.

Q: Figure 1 shows a ferromagnetic core with a relative permeability of 1850, the depth of the core is…

A: Fig: Given magnetic circuit  Given that μr=1850t=10cmlg=0.2cmN=500effective…

Q: : Explain briefly various theories of breakdown in liquid dielectrics

A: breakdown in Liquid Dielectrics  As we know that Liquids molecules are arranged very closely when we…

Q: What is characteristic impedance? How do you find it by measuring pulses?

A: Solution:   Characteristic impedance is the resistance offered by a transmission line to the flow of…

Q: A synchronous machine rated 50 MW, 50 Hz has a rated load of 40 MW. Load varies by 1% for 1% change…

A: Given- 50 MW, 50 Hz rated load of 40 MW, Load varies by 1% for 1% change in frequency, To Find- The…

Q: a rectangular ferromagnetic core 40 x 60 mm has a flux φ = 1.44 mwb. an air gap in the core is of…

A: This question belongs to electrical machine. It is based on the concept of relation between flux ,…

Q: Signals from a macroscopic sample decay faster in an inhomogeneous magnetic fieldthan in a…

A: Magnetic field in homogeneity affects the magnetic characteristics of the material like magnetic…

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

A: Mechanical waves are classified based on their movement. Based on their movement mechanical waves…

Q: Determine the commutator pitches Yc, trace the winding around the commutator and show that the…

A: Answer -

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

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Q: In DC machines the number of parallel paths for a wave winding ger Select one: O a. Three h Two

A: There are two type of winding in DC machine . 1. Lap winding 2. Wave winding.

Q: Determine the mutual inductance between a very long straight wire and a conducting circular loop of…

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Q: Q4) Explain briefly the principle of critical angle required for total internal reflection.

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Q: In magnetic circuits, the core is often made of laminated magnetic material. What are the benefits…

A: In magnetic circuit, the core is often made of laminated magnetic material. To select all the…

Q: The question is in the picture below.

A: We are given three waveforms shown below: We have to calculate following parameters for all the…

Electromagnetic Power Density

The power density of an electromagnetic (EM) wave is proportional to the square of the frequency of electric field (or magnetic field). The moving charge produces both electric field and magnetic field. Electric and magnetic fields are inseparable and exist in combination in EM waves.

Wave Reflection and Transmission

Reflection is defined as a sudden change in the path of the wave that strikes the boundary between two types of media. The least part of the disturbances coming from the wavelength remains the same within the same area. The reflection of the wave takes place by following everyday thinking, simple rules, at the ends of the plane. The coefficient of reflection is the ratio of the amplitude of the reflected wave to the value of the incident wave.

Skin Depth

The wire-type conductors are used in the transmission of electrical energy or signals using an alternating current. The electrons are driven apart due to the electric field created nearby the copper conductor surface. The magnetic field changes with the change in the current density. This change in the magnetic field produces an electric field that opposes the current density change. This electric field is known as back electromotive force (EMF). This force is stronger inside the copper conductor and is weaker at the surface. An alternating current can be induced due to the magnetic field according to the law of induction. Such a current is produced due to the electromagnetic wave impinging on the copper conductor.

Plane wave propagation

Any of the ways how waves travel is known as wave propagation. One can find the difference between longitudinal wave and transverse wave with respect to the direction of oscillation, which is related to the propagation direction. Propagation may occur in vacuum for electromagnetic waves as well as in material medium. Other types of waves need a transmission medium to exist and cannot propagate through the vacuum. The amplitude of a wave is the maximum distance from the displacement of the particle from its resting position on the medium. The waves that propagate are of two types, Pressure waves or Shear waves.