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Explain effect of frequency of applied electric field.
If an external electric field is applied, the distance among charges that is related to chemical bonding keeps constant in the polarization; though, the polarization itself rotates. Since this rotation completes not instantaneously but in the delay time τ, that depends upon the surrounding local viscosity of the molecules and torque, dipolar polarizations lose the response to electric fields at the lowest frequency in polarizations. The delay of the response to this change of the electric field causes friction and heat.
Semiconductors Conductivity in among those of metals and insulators. Conductivity can be changed over orders of magnitude through changes in temperature, optical excitat
Insulators have (A) A full valence band. (B) An empty conduction band. (C) A large energy gap. (D)All the above. Ans: Insulators have a large energy gap.
find the resultant of two forces 20N and25N acting at an angle 60 degree each other
What is interfacing? An interface is a shared boundary among the devices which includes sharing information. Interfacing is the process of making two dissimilar systems communi
Explain Node-voltage and mesh-current analyses? The node-voltage and mesh-current methods, which complement each other, are well-ordered systematic methods of analysis for solv
The FESTO conveyer consists of 600mm belt driven by a 24V d.c. motor at a rate of 13 seconds per metre. A relay on the FESTO panel controls the motor operation and is wired for sou
Task a) Investigate and describe the significance of the following: i. Slenderness ratio and buckling in columns ii. Effective length of columns b) Explain Eu
describe the working and construction diagram of nicholas prism
Q. Find load resistance and voltage? Let the amplifier block be connected to a current source at the input terminals, as shown in Figure(a), and to a load resistance R L at it
Design and draw a circuit using the cascade system to operate two cylinders (A and B) which, on the operation of a start valve, produces the sequence A - B + B - A+. The cylinder
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