ET 212 Final Examination Answers – Grantham
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Select True / False from the following :
Question 1
The two basic kinds of transistor circuits are amplifying and switching.
True
False
Question 2
The bridge rectifier is similar to a full-wave rectifier because it produces a full-wave output voltage.
True
False
Question 3
A semiconductor is an element with electrical properties between those of a conductor and those of an insulator.
True
False
Question 4
The dc beta is defined as the dc collector current divided by the dc emitter current.
True
False
Question 5
An ideal diode acts like a switch that closes when forward-biased and opens when reverse-biased.
True
False
Question 6
With a half-wave rectifier, the output frequency equals the input frequency.
True
False
Select Correct Answers from the Following
Question 7
A pure semiconductor is also referred to as:
a clean room device
intrinsic
extrinsic
Transistor
4 points
Question 8
Silicon that has been doped with a trivalent impurity is called a:
N-type semiconductor
P-type semiconductor
P-N junction
covalent bond
4 points
Question 9
In a silicon atom, what is the distance between the valence band and the conduction band called?
energy gap
depletion layer
P-N junction
intrinsic
4 points
Question 10
A diode is a nonlinear device because the graph of its current versus voltage is:
a straight line
not a straight line
inversely proportional to the resistance
exponential
4 points
Question 11
Ideally, a diode acts like a perfect conductor when forward-biased...