Sierra College CIE Jim Weir

QuizTest!

CIE-1 Quiz 8

Please enter your Name: (Last, First)
Your Email Address:
Last 4 digits of your student ID

1: In a silicon diode, the N and P layers: must be the same size
may be of different sizes
must be N larger than P
must be P larger than N
2: In a bipolar transistor,: the base-emitter diode is forward biased
the base emitter diode is reverse biased
both junctions are forward biased
both junctions are reverse biased
3: In a bipolar transistor,: both junctions are forward biased
both junctions are reverse biased
the collector-base junction is reverse biased
the collector-base is forward biased
4: In a bipolar transistor,: there are two forward biased junctions
the collector is usually small in size relative to the emitter
the collector-base junction is fairly wide
the collector-base junction is extremely narrow
5: The first bipolar transistor was made from: germanium
silicon
carbon
gallium arsenide
6: In a bipolar transistor,: the collector voltage is small compared to the base voltage
the collector voltage is large compared to the base voltage
both collector and base voltages are equal
the base voltage always exceeds the collector voltage
7: In a bipolar transistor,: an electron emitted from the base supply always returns to the base supply
electrons emitted by the base supply and the collector supply always return to their respective supplies
an electron emitted from the base supply generally returns to the collector supply
electrons emitted by the base supply generally split equally to return to the base and collector supply
8: In a bipolar transistor,: electrons emitted by the base supply are repelled from the collector-base junction
electrons emitted by the base supply return to the base supply
electrons emitted by the base supply "jump" (or tunnel) back into the emitter
electrons emitted by the base supply can "jump" (or tunnel) over or through the reverse biased base-collector junction
9: "Jumping" (tunneling): was predicted by quantum mechanics
was a new phenomenon never predicted
was a relatively well-known effect
was seen in Bohr's model of the atom
10: This jumping or tunneling: could occur in relatively impure material
had been seen in the laboratory many times before
only occur in highly refined, nearly pure, material
occurs in elements of the 3rd and 5th columns of the periodic table
11: The inventor of the transistor was: Brattain
Shockley
Bardeen
all of the above
12: The transistor was invented at: AT&T Laboratory
Bell Laboratories
Argonne National Laboratory
California Technical University
13: You can have: only NPN transistors
only PNP transistors
NPN and PNP transistors
NNN and PPP transistors
14: The transistor can be thought of as: two diodes anode to anode or cathode to cathode
two diodes anode to anode
two diodes cathode to cathode
two diodes in series anode to cathode or cathode to anode
15: The ratio of electrons "captured" by the collector to the electrons returning to the base supply is called: alpha
beta
gamma
delta
16: The field effect transistor ("FET") was first invented: at Bell Labs
at RCA Labs
at Oxford University
in Germany
17: The FET controls: voltage with a voltage
current with a current
current with a voltage
voltage with a current
18: One main advantage of the FET is that: it has an extremely high input resistance
it has extremely low input resistance
the drain voltage can easily control the gate current
the source and the drain are completely decoupled
19: The FET operation may be viewed at a site run by: Sierra College
Florida State University
University of Southern California
San Diego State University
20: Many transistors have the prefix ______ in their part number: 2N
1N
0N
JPW
21: Most beta values for small transistors fall within the range: 1-5
5-50
50-300
300-1000
22: What was the voltage gain of the bipolar audio amplifier in the lab (before installing "temp"): 1
10
100
1000
23: What is the approximate voltage measured from base to emitter on the audio amplifier: 8 volts
15 volts
0.6 volt
4 volts
24: What are the FET equivalents of the emitter, base, and collector of a bipolar transistor: source, gate, drain
gate, drain, source
drain, gate, source
gate, source, drain
25: What happened when the "temp" capacitor was added to the audio amplifier: the gain went down a little
the gain did not change
the gain went up a little
the gain went up tremendously