WorksheetsElectro 2 - Quiz 1 -Electron Theory and Semiconductor Device
Total questions: 20
Worksheet time: 10mins
Normally, the number of electrons and protons in an atom are equal. Therefore, an atom as a whole is ___________________.
electrically positive
electrically negative
electrically neutral
electrically unbalanced
The electrical properties of an element is determined by the _______________________________.
number of valence orbits
number of valence protons
number of valence electrons
number of valence neutrons
Which of the following refers to the outermost orbit in the planetary model of an atom?
Valence Shell
Electron Spin
Quantum number
Magnetic Spin
An element can have more than one atom.
True
False
Which of the following refers to the number of valence electrons for a semiconductor?
4
6
2
8
Gallium Arsenide (GaAs) is an example of a compound which is also a molecule.
True
False
Which of the following is NOT an example of a semiconductor?
Silicon
Germanium
Gallium Arsenide
Silver
Which of the following scientist has drawn the periodic table and ordered elements based on their unique elemental weights?
Robert Boyle
Antoine Lavoisier
John Dalton
Dmitri Mendeleev
Which of the following is NOT found at the center of an atom in the planetary model?
Electrons
Protons
Neutrons
Which of the following refers to a semiconductor material that has been carefully refined to reduce the number of impurities?
intrinsic
extrinsic
p-type
n-type
Which of the following is NOT a semiconductor device?
Diode
Integrated Circuit
Bipolar Junction Transistor
Pushbutton switch
Which of the following is associated with the given schematic symbol?
Zener Diode
Light-emitting Diode
NE555N
Bipolar Junction Transistor
Which of the following is associated with the given schematic symbol?
Zener Diode
Light-emitting Diode
NE555N
Bipolar Junction Transistor
Which of the following is associated with the given schematic symbol?
Zener Diode
Light-emitting Diode
NE555N
Bipolar Junction Transistor
Which of the following is associated with the given schematic symbol?
Zener Diode
Light-emitting Diode
NE555N
Bipolar Junction Transistor
Which of the following is a positive voltage regulator with an output voltage of 5 Volts?
LM7805
2N6509G
NE555N
Bipolar Junction Transistor
Which of the following acts operates similar to a relay but with no mechanical parts and at a faster switching speed?
LM7805
2N6509G
NE555N
Bipolar Junction Transistor
Which of the following is a semiconductor device which allows the flow of current only in one direction?
Diode
Integrated Circuit
Bipolar Junction Transistor
Pushbutton switch
The direction of current in a diode is from cathode to anode.
True
False
Which of the following is a silicon-controlled rectifier / thyristor?
LM7805
2N6509G
NE555N
Bipolar Junction Transistor
