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Electric Circuits
Slew rate of an op-amp influences its frequency response. State true or false also give a reason for the answer.
Electric Circuits
A uniform plane wave of 100 kHz travelling in free space strikes a large block of a
material having e = 4e0, μ = 9μ0 and s = 0 normal to the surface. If the incident
magnetic field vector is given by
10 cos ( ) ˆ tesla 6 B = wt −by z −
r
write the complete expressions for the incident, reflected, and transmitted field
vectors
material having e = 4e0, μ = 9μ0 and s = 0 normal to the surface. If the incident
magnetic field vector is given by
10 cos ( ) ˆ tesla 6 B = wt −by z −
r
write the complete expressions for the incident, reflected, and transmitted field
vectors
Electric Circuits
Using Maxwell’s equations in free space, derive the wave equation for the
electric field vector. Obtain the conditions under which the following time varying
electric and magnetic fields satisfy Maxwell’s equations in vacuum with no source
charges or currents:
ˆ sin ( )
E = k E0 y − vt
ˆ sin ( )
B = i B0 y − vt
where E0 and B0 are constant.
electric field vector. Obtain the conditions under which the following time varying
electric and magnetic fields satisfy Maxwell’s equations in vacuum with no source
charges or currents:
ˆ sin ( )
E = k E0 y − vt
ˆ sin ( )
B = i B0 y − vt
where E0 and B0 are constant.
Electric Circuits
IC 7805 and IC 7905 must always used together
Electric Circuits
An electrical lamp consumes 100 W of power. If the supply voltage is 220V the energy consumed in 30 minutes is
Electric Circuits
The radius of the wire in a coaxial cable is .65mm and the inner radius of the coaxial conducting cylinder is 1.45mm assuming that there is vacuum between the wire and cylinder calculate the capacitance of a 1.5m length of cable
Electric Circuits
6. a) Which parameters of an op-amp become significant for a fast varying ultra low input
voltage signal? What should be the values of these parameters for a triangular wave
signal of ±5 mV peak to peak with 50 MHz frequency given to a unity gain op-amp
amplifier?
voltage signal? What should be the values of these parameters for a triangular wave
signal of ±5 mV peak to peak with 50 MHz frequency given to a unity gain op-amp
amplifier?
Electric Circuits
Rectification efficiency is proportional to the number of diodes used in a rectifier
circuit. State true or false also give a reason for the answer.
circuit. State true or false also give a reason for the answer.
Electric Circuits
Amplifier with common emitter mode offers maximum current gain. State true or false ,also give a reason for your answer.
Electric Circuits
Reverse biasing of a semiconductor junction diode increases its energy band gap. State true or false ,also give reason for your answer.
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#339914 on Dec 2023
#339914 on Dec 2023