ECE :: Exam Questions Paper
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A heavily doped semiconductor exhibits a __________ such a device is called sensistors.
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Sampling frequency of
sin 100pt + cos 200pt + sin 100pt + cos 200pt is: -
For real and odd signals, the Fourier series coefficient ak is __________ .
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The magnitude of frequency response of an underdamped second order system is 5 at 0 rad/sec and peaks to
at 52rad/sec. The transfer function of the system is -
Who developed the concept of time varying electric field producing a magnetic field?
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What will be equipotential surfaces for a pair of equal and opposite line charges?
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With respect to the differential amplifier configuration shown below, the differential gain Ad will be
Rc = 4.7 KΩ
RE = 2.7 KΩ
hfe = 100
hie = 1 KΩ
RS = 100 Ω -
A memory system of size 16 K bytes is required to be designed using memory chips having 12 address lines and 4 data lines-each. The number of such chips required to design and the memory system is :
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The measured transconductance gm of an NMOS transistor operating in the linear region is plotted against the gate voltage VG at constant drain voltage VD. Which of the following figures represents the expected dependance of gm on VG?
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In the graph shown in the figure, for the tree with branches b, d and f the fundamental loops would include c
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