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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 21
26.
A silicon wafer has 100 nm of oxide it and is inserted in a furnace at a temperature above 1000°C for further oxidation in dry oxygen. The oxidation rate
is independent of current oxide thickness and temperature
is independent of current oxide thickness but depends on temperature
slows down as the oxide grows
is zero as the existing oxide prevents further oxidation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
When a vector has positive divergence, it indicates that the vector quantity has at that point and if the divergence is negative, it indicates __________ .
source, sink
sink, source
positive value, negative value
negative value, positive value
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
A function of one of more variables which conveys information on the nature of physical phenomenon is called
Noise
Interference
System
Signal
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
A current source with three basic transistors is shown. All transistors are similar. All are having finite current gain β

Then I0 is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Which of the following represent a wave equation for a tightly stretched elastic string of length l and 'm', mass per unit?
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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