Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
a) Sketch the variation of electron concentration with temperature for
i) an n-type semiconductor doped with 1021 donors m-3
ii) an intrinsic semiconductor.
b) Explain briefly why the intrinsic carrier concentration at a given temperature is greater for germanium than for silicon.
c) At a temperature of 293 K an intrinsic semiconductor has an electron mobility of 0.12 m2V-1s-1 and a hole mobility of 0.07 m2V-1s-1.
If its resistivity is 35 :m, calculate the intrinsic carrier concentration. Hence calculate the hole concentration when the semiconductor is doped with 1021 donors m-3.
d) If a voltage of 0.5 V is applied across the opposite faces of a sample of the above intrinsic semiconductor (in part c) of thickness 0.2 mm, determine the approximate total current density and the average drift velocity of the holes.
fir and iir filter design
Q For a three-phase, fully controlled, recti?er-fed, separately excited dc motor, corresponding to ideal no-load operation, find the expression for the no-load speeds. Comment on w
The advantage of the analog storage oscilloscope is that it has higher bandwidth and writing speed than a digital oscilloscope, being capable of operating speeds of about 15 GHz. T
Digital Transmission on Fading Multipath Channels We have discussed thus far digital modulation and demodulation methods for the transmission of information over two types of c
Distinguish between paramagnetic and diamagnetic materials, mentioning at least one example of each. Paramagnetic Materials: The atoms of these materials have permanent magne
Explain how materials can be classified into three groups on the basis of atomic structure. An atom has a positively charged nucleus surrounded through a group of negatively ch
PRINCIPLE OF LED
Q. Consider themagnetic circuit of Figure. Let the cross-sectional area AC of the core, be 16 cm 2 , the average length of the magnetic path in the core lC be 40 cm, the number
Give some applications of manganin. Manganin is alloy of nickel, copper and manganese. This is used shunts in measuring instruments, for making their coils and for making pr
Q. The electric field intensity due to a point charge in free space is given to be Determine the location and the value of the point charge.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd